CN100576722C - Single-ended input both-end output amplifier circuit and signal processing circuit - Google Patents
Single-ended input both-end output amplifier circuit and signal processing circuit Download PDFInfo
- Publication number
- CN100576722C CN100576722C CN200610081379A CN200610081379A CN100576722C CN 100576722 C CN100576722 C CN 100576722C CN 200610081379 A CN200610081379 A CN 200610081379A CN 200610081379 A CN200610081379 A CN 200610081379A CN 100576722 C CN100576722 C CN 100576722C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- coupled
- output
- input
- amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The invention provides a kind of single-ended input both-end output amplifier circuit and signal processing circuit, single-ended input both-end output amplifier circuit, comprise in order to input signal is enlarged into the amplifier of amplifying signal, comprise the input that receives above-mentioned input signal, and first output.And in order to amplifying signal is converted to the right single-ended input both-end output conversion circuit of differential wave, comprise the first transistor that receives amplifying signal, tool is coupled to the first grid of first output, is coupled to the one the first utmost points of second output, and is coupled to the one the second utmost points of first node; Transistor seconds has second grid, is coupled to the two the first utmost points of the 3rd output, and is coupled to the two the second utmost points of first node; Second electric capacity is coupled between second output and the second grid; First resistance is coupled between second output and the voltage source; Second resistance is coupled between the 3rd output and the voltage source; And current source, be coupled between first node and the earth point.
Description
Technical field
The invention relates to a kind of signal processing circuit, particularly relevant for a kind of single-ended input both-end output amplifier circuit in low noise.
Background technology
Present employed antenna major part is single-ended antenna, yet be used for the image signal of signal down is eliminated frequency mixer (Image-rejection Mixer), normally utilize double balanced mixer (Double-Balanced Mixer) to realize with both-end input.Therefore, must be converted to the both-end output signal by the single-ended input signal that antenna is received, image signal eliminate frequency mixer just can with from the signal down of antenna end to carry out back-end processing.
The method that at present single-ended input signal is converted to the both-end output signal has two kinds.Fig. 1 shows wherein a kind of single-ended input both-end output amplifier circuit 100, comprises balancing circuitry (Balun) 12 and both-end input both-end output amplifier 13.Both-end input both-end output amplifier 13 can for low noise amplifier (Low Noise Amplifier, LNA).The method is to add balancing circuitry 12 in the wafer outside.Balancing circuitry 12 has two inputs, and an input of balancing circuitry 12 is to be coupled to antenna 11, and another input of balancing circuitry 12 is to be coupled to earth point.Two outputs of balancing circuitry 12 are two inputs that are coupled to both-end input both-end output amplifier 13.Balancing circuitry 12 is to be the circuit by electric capacity and inductance combined.One input of balancing circuitry 12 is in order to the single-ended input signal of reception from antenna 11, and single-ended input signal is converted to the both-end output signal.Single-ended input signal can be radiofrequency signal.Then, the both-end output signal is sent to both-end input both-end output amplifier 13, the both-end output signal is amplified to produce both-end output amplifying signal.Thus, the both-end of single-ended input both-end output amplifier circuit 100 output amplifying signal can be sent to image signal and eliminates two inputs of frequency mixer 14 and make down conversion process.
Generally speaking, usually both-end is imported both-end output amplifier 13 and be made in wafer inside with image signal elimination frequency mixer 14, but can be from the signal down of antenna 11 to carry out back-end processing in order to make image signal eliminate frequency mixer 14, therefore must adopt the method shown in the single-ended as shown in Figure 1 input both-end output amplifier circuit 100, add balancing circuitry 12 in the wafer outside, just can make image signal eliminate frequency mixer 14 and receive both-end output amplifying signal, carry out subsequent treatment, but adopt this kind method additionally to buy exterior part, cause increasing the cost that the wafer module is made.
Fig. 2 shows another kind of single-ended input both-end output amplifier circuit 200, comprises the single-ended output amplifier 22 of single-ended input and single-ended to both-end transducer (InductiveTransformer) 23.The single-ended output amplifier 22 of single-ended input can be low noise amplifier.The method is that adding is single-ended to both-end change-over circuit 23 in the wafer that includes single-ended output amplifier 22 of single-ended input and image signal elimination frequency mixer 24.Antenna 21 is to be coupled to the single-ended output amplifier 22 of single-ended input, and the output of the single-ended output amplifier 22 of single-ended input is to be coupled to single-ended input to both-end transducer 23.Antenna 21 is in order to receiving single-ended input signal, and single-ended input signal is sent to the single-ended output amplifier 22 of single-ended input.Single-ended input signal can be radiofrequency signal.The single-ended output amplifier 22 of single-ended input is enlarged into amplifying signal with single-ended input signal, and amplifying signal is sent to single-ended to both-end transducer 23.Single-ended is that amplifying signal is converted to the both-end output signal to both-end transducer 23.Thus, the both-end output signal of single-ended input both-end output amplifier circuit 200 can be sent to image signal and eliminates two inputs of frequency mixer 24 and make down conversion process.
Yet, the shown single-ended input both-end output amplifier circuit 200 of Fig. 2 is to add " single-ended to the both-end change-over circuit " 23 in wafer, though reduced the cost of buying exterior part, but single-ended is to be the circuit by electric capacity and inductance constituted to both-end transducer 23, usually need very big dimensioned area, thereby increased the area of wafer.
In the present technology, also there is the differential amplification of using negative input end ground connection to take the single-ended of chip area to both-end transducer 23 to replacing among Fig. 2.Fig. 3 A shows traditional single-ended input both-end output amplifier circuit 300.Antenna 31 is to be coupled to the single-ended output amplifier 32 of single-ended input.The single-ended output amplifier 32 of single-ended input can be low noise amplifier.The amplifying signal that the single-ended output amplifier 32 of single-ended input is exported is to be coupled to the input of the differential amplification of negative input end ground connection to circuit 33.
Fig. 3 B shows that the differential amplification of negative input end ground connection to circuit 33, comprises the first transistor 301, transistor seconds 302, first resistance 303, second resistance 304, current source 305, electric capacity 306, first output 307, second output 307 ', voltage source V D D, earth point VS S, first node 3A.The grid of the first transistor 301 is the outputs that are coupled to the single-ended output low noise amplifier 32 of single-ended input, and the drain electrode of the first transistor 301 is to be coupled to first output 307, and the source electrode of the first transistor 301 is to be coupled to first node 3A.The grid of transistor seconds 302 is to be coupled to electric capacity 306, and the drain electrode of transistor seconds 302 is to be coupled to second output 307 ', and the source electrode of transistor seconds 302 is to be coupled to first node 3A.First resistance 303 is to be coupled between first output 307 and the voltage source V DD, and second resistance 304 is to be coupled between second output 307 ' and the voltage source V DD.Current source 305 is to be coupled between first node 3A and the earth point VSS.Electric capacity 306 is to be coupled between the grid and earth point VSS of transistor seconds 302.Thus, the both-end output signal exported of single-ended input both-end output amplifier circuit 300 can be distinguished simultaneously and to be sent to image signal via first output 307 and second output 307 ' and to eliminate two inputs of frequency mixer 34 and make down conversion process.
Yet, though the differential amplification with traditional negative input end ground connection has been dwindled chip area to the single-ended way to both-end change-over circuit 23 of circuit 33 replacements, but, therefore can make the both-end output signal quality of amplifier circuit 300 outputs be subjected to The noise because the differential amplification of conventional negative input end grounding is arrived the input of the differential amplification of negative input end ground connection to circuit 33 to bypass (bypass) electric capacity 306 meetings of circuit 33 with the coupling noise on the wafer.
Summary of the invention
In view of this, the invention provides a kind of single-ended input both-end output amplifier circuit, comprise amplifier and single-ended input both-end output conversion circuit.Amplifier is in order to radio-frequency input signals is enlarged into amplifying signal, comprises in order to receiving the input of above-mentioned radio-frequency input signals, and first output, one first inductance is coupled to above-mentioned input; One the 5th electric capacity is coupled between above-mentioned first inductance and the Section Point; One second inductance is coupled between a voltage source and above-mentioned first output; One the 3rd transistor has one the 3rd grid that is coupled to above-mentioned Section Point, is coupled to one the three the first utmost point of above-mentioned first output, and one the three the second utmost point; And one the 3rd inductance, be coupled between above-mentioned the three the second utmost points and the earth point.Single-ended input both-end output conversion circuit is right in order to amplifying signal is converted to differential wave, comprise the first transistor that is used for receiving amplifying signal, has the first grid that is coupled to first output, be coupled to the one the first utmost points of second output, and the one the second utmost points that are coupled to first node; Transistor seconds has second grid, is coupled to the two the first utmost points of the 3rd output, and the two the second utmost points that are coupled to first node; Second electric capacity is coupled between second output and the second grid; First resistance is coupled between second output and the voltage source; Second resistance is coupled between the 3rd output and the voltage source; And current source, be coupled between first node and the earth point.
Single-ended input both-end output amplifier circuit of the present invention more comprises an antenna, is used for receiving above-mentioned radio-frequency input signals.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned antenna is single-ended antenna.
Single-ended input both-end output amplifier circuit of the present invention more comprises one first electric capacity, is coupled between above-mentioned first output and the single-ended input both-end output conversion circuit.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier is the single-ended output amplifier of single-ended input.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier is a low noise amplifier.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier is the string stacked type amplifier.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier more comprises one the 4th transistor, is coupled between above-mentioned first output and the above-mentioned the 3rd transistorized the three the first utmost points, and has one the 4th grid, is coupled to above-mentioned voltage source.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier more comprises a bias generator, is biased into above-mentioned Section Point in order to apply one.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned amplifier more comprises one the 3rd resistance, is coupled between above-mentioned bias generator and the Section Point.
Single-ended input both-end output amplifier circuit of the present invention, the signal of above-mentioned second output and the 3rd output output low noise coefficient and high-gain.
Single-ended input both-end output amplifier circuit of the present invention, above-mentioned second output and the 3rd output are coupled to one first signal input part and the secondary signal input that an image signal is eliminated frequency mixer respectively.
Single-ended input both-end output amplifier circuit of the present invention more comprises: one the 3rd electric capacity is coupled between above-mentioned second output and above-mentioned first signal input part; And one the 4th electric capacity, be coupled between above-mentioned the 3rd output and the above-mentioned secondary signal input.
Moreover, the invention provides a kind of signal processing circuit, comprise amplifier, single-ended input both-end output conversion circuit and image signal elimination frequency mixer.Amplifier is in order to radio-frequency input signals is enlarged into amplifying signal, comprises in order to receiving the input of above-mentioned radio-frequency input signals, and first output, one first inductance is coupled to above-mentioned input; One the 5th electric capacity is coupled between above-mentioned first inductance and the Section Point; One second inductance is coupled between a voltage source and above-mentioned first output; One the 3rd transistor has one the 3rd grid that is coupled to above-mentioned Section Point, is coupled to one the three the first utmost point of above-mentioned first output, and one the three the second utmost point; And one the 3rd inductance, be coupled between above-mentioned the three the second utmost points and the earth point.Single-ended input both-end output conversion circuit is right in order to amplifying signal is converted to differential wave, comprise the first transistor that is used for receiving amplifying signal, has the first grid that is coupled to first output, be coupled to the one the first utmost points of second output, and the one the second utmost points that are coupled to first node; Transistor seconds has second grid, is coupled to the two the first utmost points of the 3rd output, and the two the second utmost points that are coupled to first node; Second electric capacity is coupled between second output and the second grid; First resistance is coupled between second output and the voltage source; Second resistance is coupled between the 3rd output and the voltage source; And current source, be coupled between first node and the earth point.Image signal is eliminated frequency mixer, comprises first signal input part that is coupled to second output, and the secondary signal input that is coupled to the 3rd output.
Signal processing circuit of the present invention more comprises an antenna, is used for receiving above-mentioned radio-frequency input signals.
Signal processing circuit of the present invention, above-mentioned antenna are single-ended antenna.
Signal processing circuit of the present invention more comprises one first electric capacity, is coupled between above-mentioned first output and the single-ended input both-end output conversion circuit.
Signal processing circuit of the present invention, above-mentioned amplifier are the single-ended output amplifier of single-ended input.
Signal processing circuit of the present invention, above-mentioned amplifier are low noise amplifier.
Signal processing circuit of the present invention, above-mentioned amplifier are the string stacked type amplifier.
Signal processing circuit of the present invention, above-mentioned amplifier more comprise one the 4th transistor, are coupled between above-mentioned first output and the above-mentioned the 3rd transistorized the three the first utmost points, and have one the 4th grid, are coupled to above-mentioned voltage source.
Signal processing circuit of the present invention, above-mentioned amplifier more comprises a bias generator, is biased into above-mentioned Section Point in order to apply one.
Signal processing circuit of the present invention, above-mentioned amplifier more comprise one the 3rd resistance, are coupled between above-mentioned bias generator and the Section Point.
Signal processing circuit of the present invention, the signal of above-mentioned second output and the 3rd output output low noise coefficient and high-gain.
Signal processing circuit of the present invention more comprises: one the 3rd electric capacity is coupled between above-mentioned second output and above-mentioned first signal input part; And one the 4th electric capacity, be coupled between above-mentioned the 3rd output and the above-mentioned secondary signal input.
Single-ended input both-end output amplifier circuit of the present invention and signal processing circuit, be the single-ended input both-end output low noise amplifier integrated circuit for a small size, low noise coefficient (Noise Figure) and high-gain, it has the advantage of good circuit performance.And not only can save the manufacturing cost area of wafer (reduce) of wafer, more can save the exterior part on the circuit board, and reach small size, circuit design cheaply.
Description of drawings
Fig. 1 shows traditional single-ended input both-end output amplifier circuit;
Fig. 2 shows traditional single-ended input both-end output amplifier circuit;
Fig. 3 A shows traditional single-ended input both-end output amplifier circuit;
Fig. 3 B shows that the differential amplification of conventional negative input end grounding is to circuit;
Fig. 4 A is the circuit diagram that shows according to the described single-ended input both-end output amplifier of the embodiment of the invention;
Fig. 4 B shows according to the described single-ended circuit diagram to the both-end transducer of the embodiment of the invention;
Fig. 5 is the circuit diagram that shows according to the single-ended output string stacked type of the described single-ended input of embodiment of the invention low noise amplifier.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Fig. 4 A is the circuit diagram that shows according to the described single-ended input both-end output amplifier 400 of the embodiment of the invention, comprises the single-ended output amplifier of single-ended input (Amplifier) 42 and single-ended to both-end transducer 43.Antenna 41 is the inputs that are coupled to the single-ended output amplifier 42 of single-ended input, and the output of the single-ended output amplifier 42 of single-ended input is to be coupled to single-ended input to both-end transducer 43.The single-ended input both-end output amplifier 400 of Fig. 4 A more comprises first electric capacity 45, is coupled to the single-ended output amplifier 42 of single-ended input and single-ended between the both-end transducer 43.First electric capacity 45 is in order to the filtration direct current signal, and it is single-ended to both-end transducer 43 that AC signal is sent to.
Wherein antenna 41 is single-ended antenna.Antenna 41 is in order to receive single-ended input signal.Single-ended input signal can be radiofrequency signal.Then, the single-ended output amplifier 42 of single-ended input is enlarged into amplifying signal with the single-ended input signal that antenna 41 is received, and amplifying signal is sent to single-ended to both-end transducer 43, to produce the both-end output signal.
In a preferred embodiment of the present invention, single-ended input both-end output amplifier of the present invention is to be a single-ended input both-end output low noise amplifier, and Fig. 5 is the circuit diagram that shows the single-ended output string stacked type of single-ended input low noise amplifier.In this embodiment, be to be that string stacked type low noise amplifier (Cascode LowNoise Amplifier) is an example with the single-ended output amplifier 42 of single-ended input.The single-ended output string stacked type of single-ended input low noise amplifier is made of the 4th transistor 501, the 3rd transistor 502, first inductance 503, second inductance 504, the 3rd inductance 505, the 5th electric capacity 506, the 3rd resistance 507, bias generator Bias, voltage source V D D and earth point VSS.The grid of the 4th transistor 501 is to be coupled to voltage source V DD, and the drain electrode of the 4th transistor 501 is that to be coupled to the source electrode of first output 508, the 4th transistor 501 are the drain electrodes that are coupled to the 3rd transistor 502.The grid of the 3rd transistor 502 is to be coupled to Section Point A.First inductance 503 is to be coupled between first input end 509 and the 5th electric capacity 506, and wherein, first input end 509 is single-ended input signals that reception antenna 41 is received.The 5th electric capacity 506 is to be coupled between first inductance 503 and the Section Point A.The 3rd resistance 507 is to be coupled between Section Point A and the bias generator Bias.Second inductance 504 is to be coupled between the voltage source V DD and first output 508.The 3rd inductance 505 is to be coupled between the source electrode and earth point VSS of the 3rd transistor 502.
See also Fig. 4 A and Fig. 4 B.Fig. 4 B shows according to the described single-ended circuit diagram to both-end transducer 43 of the embodiment of the invention.Single-ended both-end transducer 43 is made up of the first transistor 401, transistor seconds 402, first resistance 403, second resistance 404, current source 405, second electric capacity 406, voltage source V DD and earth point VSS.The grid of the first transistor 401 is coupled to first electric capacity 45, as single-ended input to both-end transducer 43, in order to receive the amplifying signal by single-ended output amplifier 42 outputs of single-ended input.The drain electrode of the first transistor 401 is to be coupled to second output 409, and the source electrode of the first transistor 401 is to be coupled to first node B.The grid of transistor seconds 402 is to be coupled to second electric capacity 406, and the drain electrode of transistor seconds 402 is to be coupled to the 3rd output 409 ', and the source electrode of transistor seconds 402 is to be coupled to first node B.Second electric capacity 406 is to be coupled between the grid of second output 409 and transistor seconds 402, is coupled to the grid of transistor seconds 402 in order to the voltage level with the drain electrode of the first transistor 401.When the amplifying signal of single-ended output amplifier 42 outputs of single-ended input is high level, the first transistor 401 conductings, make the voltage level of drain electrode of the first transistor 401 descend, and see through the grid that second electric capacity 406 is coupled to transistor seconds 402, make the first transistor 401 and the grid of transistor seconds 402 receive and have the input signal that phasic difference mutually 180 is spent.Therefore, make single-ended output output have the both-end output signal that phase place differs 180 degree to both-end transducer 43.In addition, first resistance 403 is to be coupled between the voltage source V DD and second output 409, and second resistance 404 is to be coupled between voltage source V DD and the 3rd output 409 ', and current source 405 is to be coupled between first node B and the earth point VSS.
Moreover single-ended input both-end output amplifier 400 more comprises the 3rd electric capacity 407 and the 4th electric capacity 408.The 3rd electric capacity 407 is to be coupled between first signal input part 46 of second output 409 and image signal elimination frequency mixer 44, and the 4th electric capacity 408 is to be coupled between the secondary signal input 46 ' of the 3rd output 409 ' and image signal elimination frequency mixer 44.Thus, the both-end output signal of single-ended input both-end output amplifier 400 can be sent to first signal input part 46 and secondary signal input 46 ' execution down conversion process that image signal is eliminated frequency mixer 44.
Single-ended is to be used for the amplifying signal after amplifying through the single-ended output amplifier 42 of single-ended input is converted to the both-end output signal that phase phasic difference 180 is spent to both-end transducer 43.Single-ended differential in the both-end transducer 43 to the shunt capacitance over the ground of negative input end in the conventional art is removed, and second electric capacity 406 is coupled to the drain electrode of positive input terminal (the first transistor 401) from the grid of negative input end (transistor seconds 402), because second electric capacity 406 directly is not connected to earth point VSS, therefore the noise of substrate can not be coupled into circuit, can improve the noise performance of circuit thus.
According to the described single-ended input both-end output amplifier 400 of the embodiment of the invention is to export the low noise amplifier integrated circuit for the single-ended input both-end of a small size, low noise coefficient (Noise Figure) and high-gain, and it has the advantage of good circuit performance.Moreover, owing to use not space consuming single-ended employed single-ended to both-end transducer 23 according to the described single-ended input both-end output amplifier 400 of the embodiment of the invention by what inductance and electric capacity constituted to both-end transducer 43 replacements employed balancing circuitry 12 of conventional art or conventional art as shown in Figure 2 as shown in Figure 2, not only can save the manufacturing cost (reducing the area of wafer) of wafer, more can save the exterior part on the circuit board, and reach small size, circuit design cheaply.
Though the present invention by the preferred embodiment explanation as above, this preferred embodiment is not in order to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, should have the ability this preferred embodiment is made various changes and replenished, so protection scope of the present invention is as the criterion with the scope of claims.
Being simply described as follows of symbol in the accompanying drawing:
100,200,300,400: single-ended input both-end output amplifier circuit
11,21,31,41: antenna
12: balancing circuitry
13,22,32,42: amplifier
14,24,34,44: frequency mixer
23,43: single-ended to the both-end converter
33: the differential amplification of negative input end ground connection is to circuit
301,302,401,402,501,502: transistor
303,304,403,404,507: resistance
305,405: current source
306,45,406,407,408,506: electric capacity
307,307 ', 409,409 ', 508: output
3A, A, B: node
46,46 ': input
503,504,505: inductance
Bias: bias generator
VDD: voltage source
VSS: earth point
Claims (25)
1. a single-ended input both-end output amplifier circuit is characterized in that, described single-ended input both-end output amplifier circuit comprises:
One amplifier in order to a radio-frequency input signals is enlarged into an amplifying signal, comprising:
One input is in order to receive above-mentioned radio-frequency input signals;
One first output;
One first inductance is coupled to above-mentioned input;
One the 5th electric capacity is coupled between above-mentioned first inductance and the Section Point;
One second inductance is coupled between a voltage source and above-mentioned first output;
One the 3rd transistor has one the 3rd grid that is coupled to above-mentioned Section Point, is coupled to one the three the first utmost point of above-mentioned first output, and one the three the second utmost point;
One the 3rd inductance is coupled between above-mentioned the three the second utmost points and the earth point; And
One single-ended input both-end output conversion circuit, right in order to above-mentioned amplifying signal is converted to a differential wave, comprising:
One the first transistor is used for receiving above-mentioned amplifying signal, has a first grid that is coupled to above-mentioned first output, is coupled to one the one the first utmost point of one second output, and one the one the second utmost point that is coupled to a first node;
One transistor seconds has a second grid, is coupled to one the two the first utmost point of one the 3rd output, and one the two the second utmost point that is coupled to above-mentioned first node;
One second electric capacity is coupled between above-mentioned second output and the above-mentioned second grid;
One first resistance is coupled between above-mentioned second output and the above-mentioned voltage source;
One second resistance is coupled between above-mentioned the 3rd output and the above-mentioned voltage source; And
One current source is coupled between above-mentioned first node and the above-mentioned earth point.
2. single-ended input both-end output amplifier circuit according to claim 1 is characterized in that, more comprises an antenna, is used for receiving above-mentioned radio-frequency input signals.
3. single-ended input both-end output amplifier circuit according to claim 2 is characterized in that above-mentioned antenna is single-ended antenna.
4. single-ended input both-end output amplifier circuit according to claim 1 is characterized in that, more comprises one first electric capacity, is coupled between above-mentioned first output and the above-mentioned single-ended input both-end output conversion circuit.
5. single-ended input both-end output amplifier circuit according to claim 1 is characterized in that above-mentioned amplifier is the single-ended output amplifier of single-ended input.
6. single-ended input both-end output amplifier circuit according to claim 5 is characterized in that above-mentioned amplifier is a low noise amplifier.
7. single-ended input both-end output amplifier circuit according to claim 6 is characterized in that above-mentioned amplifier is the string stacked type amplifier.
8. single-ended input both-end output amplifier circuit according to claim 1, it is characterized in that above-mentioned amplifier more comprises one the 4th transistor, be coupled between above-mentioned first output and the above-mentioned the 3rd transistorized the three the first utmost points, and have one the 4th grid, be coupled to above-mentioned voltage source.
9. single-ended input both-end output amplifier circuit according to claim 1 is characterized in that above-mentioned amplifier more comprises a bias generator, is biased into above-mentioned Section Point in order to apply one.
10. single-ended input both-end output amplifier circuit according to claim 9 is characterized in that above-mentioned amplifier more comprises one the 3rd resistance, is coupled between above-mentioned bias generator and the above-mentioned Section Point.
11. single-ended input both-end output amplifier circuit according to claim 1 is characterized in that, the signal of above-mentioned second output and above-mentioned the 3rd output output low noise coefficient and high-gain.
12. single-ended input both-end output amplifier circuit according to claim 1, it is characterized in that above-mentioned second output and above-mentioned the 3rd output are coupled to one first signal input part and the secondary signal input that an image signal is eliminated frequency mixer respectively.
13. single-ended input both-end output amplifier circuit according to claim 12 is characterized in that, more comprises:
One the 3rd electric capacity is coupled between above-mentioned second output and above-mentioned first signal input part; And
One the 4th electric capacity is coupled between above-mentioned the 3rd output and the above-mentioned secondary signal input.
14. a signal processing circuit is characterized in that, described signal processing circuit comprises:
One amplifier in order to a radio-frequency input signals is enlarged into an amplifying signal, comprising:
One input is in order to receive above-mentioned radio-frequency input signals;
One first output;
One first inductance is coupled to above-mentioned input;
One the 5th electric capacity is coupled between above-mentioned first inductance and the Section Point;
One second inductance is coupled between a voltage source and above-mentioned first output;
One the 3rd transistor has one the 3rd grid that is coupled to above-mentioned Section Point, is coupled to one the three the first utmost point of above-mentioned first output, and one the three the second utmost point;
One the 3rd inductance is coupled between above-mentioned the three the second utmost points and the earth point; And
One single-ended input both-end output conversion circuit, right in order to above-mentioned amplifying signal is converted to a differential wave, comprising:
One the first transistor is used for receiving above-mentioned amplifying signal, has a first grid that is coupled to above-mentioned first output, is coupled to one the one the first utmost point of one second output, and one the one the second utmost point that is coupled to a first node;
One transistor seconds has a second grid, is coupled to one the two the first utmost point of one the 3rd output, and one the two the second utmost point that is coupled to above-mentioned first node;
One second electric capacity is coupled between above-mentioned second output and the above-mentioned second grid;
One first resistance is coupled between above-mentioned second output and the above-mentioned voltage source;
One second resistance is coupled between above-mentioned the 3rd output and the above-mentioned voltage source; And
One current source is coupled between above-mentioned first node and the above-mentioned earth point; And
One image signal is eliminated frequency mixer, comprising:
One first signal input part is coupled to above-mentioned second output; And
One secondary signal input is coupled to above-mentioned the 3rd output.
15. signal processing circuit according to claim 14 is characterized in that, more comprises an antenna, is used for receiving above-mentioned radio-frequency input signals.
16. signal processing circuit according to claim 15 is characterized in that, above-mentioned antenna is single-ended antenna.
17. signal processing circuit according to claim 14 is characterized in that, more comprises one first electric capacity, is coupled between above-mentioned first output and the above-mentioned single-ended input both-end output conversion circuit.
18. signal processing circuit according to claim 14 is characterized in that, above-mentioned amplifier is the single-ended output amplifier of single-ended input.
19. signal processing circuit according to claim 18 is characterized in that, above-mentioned amplifier is a low noise amplifier.
20. signal processing circuit according to claim 19 is characterized in that, above-mentioned amplifier is the string stacked type amplifier.
21. signal processing circuit according to claim 14, it is characterized in that above-mentioned amplifier more comprises one the 4th transistor, be coupled between above-mentioned first output and the above-mentioned the 3rd transistorized the three the first utmost points, and have one the 4th grid, be coupled to above-mentioned voltage source.
22. signal processing circuit according to claim 14 is characterized in that, above-mentioned amplifier more comprises a bias generator, is biased into above-mentioned Section Point in order to apply one.
23. signal processing circuit according to claim 22 is characterized in that, above-mentioned amplifier more comprises one the 3rd resistance, is coupled between above-mentioned bias generator and the above-mentioned Section Point.
24. signal processing circuit according to claim 14 is characterized in that, the signal of above-mentioned second output and above-mentioned the 3rd output output low noise coefficient and high-gain.
25. signal processing circuit according to claim 14 is characterized in that, more comprises:
One the 3rd electric capacity is coupled between above-mentioned second output and above-mentioned first signal input part; And
One the 4th electric capacity is coupled between above-mentioned the 3rd output and the above-mentioned secondary signal input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610081379A CN100576722C (en) | 2006-05-22 | 2006-05-22 | Single-ended input both-end output amplifier circuit and signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610081379A CN100576722C (en) | 2006-05-22 | 2006-05-22 | Single-ended input both-end output amplifier circuit and signal processing circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101079594A CN101079594A (en) | 2007-11-28 |
| CN100576722C true CN100576722C (en) | 2009-12-30 |
Family
ID=38906873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610081379A Expired - Fee Related CN100576722C (en) | 2006-05-22 | 2006-05-22 | Single-ended input both-end output amplifier circuit and signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100576722C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI454052B (en) * | 2011-04-01 | 2014-09-21 | Realtek Semiconductor Corp | Single-to-differential conversion circuit |
| TWI463812B (en) * | 2012-04-16 | 2014-12-01 | Montage Technology Shanghai Co | Radio-frequency signal receiving apparatus |
| US8754710B2 (en) * | 2012-06-22 | 2014-06-17 | Mstar Semiconductor, Inc. | Low-noise amplifiers for RF receiver |
| TWI643449B (en) * | 2018-04-27 | 2018-12-01 | 立積電子股份有限公司 | Amplifier |
| CN111641396B (en) * | 2020-06-30 | 2023-05-05 | 湘潭大学 | Charge amplifying circuit for front-end reading system of silicon drift detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0300494A2 (en) * | 1987-07-24 | 1989-01-25 | Nippon Telegraph And Telephone Corporation | Wideband amplifier |
| EP0520751A1 (en) * | 1991-06-28 | 1992-12-30 | Kabushiki Kaisha Toshiba | Integrating filter circuit |
| CN1152819A (en) * | 1995-08-21 | 1997-06-25 | 汤姆森消费电子有限公司 | Audio frequency differential bus receiver used for audio/video frequency inter-connection |
| US5831454A (en) * | 1996-07-01 | 1998-11-03 | Motorola, Inc. | Emitter coupled logic (ECL) gate |
| US20060103468A1 (en) * | 2004-11-12 | 2006-05-18 | Richwave Technology Corp. | Single-ended input to differential output low noise amplifier with a cascode topology |
-
2006
- 2006-05-22 CN CN200610081379A patent/CN100576722C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0300494A2 (en) * | 1987-07-24 | 1989-01-25 | Nippon Telegraph And Telephone Corporation | Wideband amplifier |
| EP0520751A1 (en) * | 1991-06-28 | 1992-12-30 | Kabushiki Kaisha Toshiba | Integrating filter circuit |
| CN1152819A (en) * | 1995-08-21 | 1997-06-25 | 汤姆森消费电子有限公司 | Audio frequency differential bus receiver used for audio/video frequency inter-connection |
| US5831454A (en) * | 1996-07-01 | 1998-11-03 | Motorola, Inc. | Emitter coupled logic (ECL) gate |
| US20060103468A1 (en) * | 2004-11-12 | 2006-05-18 | Richwave Technology Corp. | Single-ended input to differential output low noise amplifier with a cascode topology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101079594A (en) | 2007-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7688146B2 (en) | Single-ended input to differential-ended output low noise amplifier | |
| US9054648B1 (en) | Wideband active balun LNA topology with narrow-band filtering and noise cancelling | |
| CN110995310B (en) | Radio frequency front-end circuit and control method thereof | |
| CN100576722C (en) | Single-ended input both-end output amplifier circuit and signal processing circuit | |
| CN104348432A (en) | Single-converted-to-double low noise amplifier with highly balanced and stabilized differential output gain phase | |
| US8957732B2 (en) | Amplifier and transceiver including the amplifier | |
| US7603091B2 (en) | Hybrid balun apparatus and receiver comprising the same | |
| TWI387198B (en) | Low noise amplifier | |
| US6667649B1 (en) | Method and system for utilizing a high-performance mixer as a complete receiver | |
| CN204425279U (en) | A kind of high-gain low-noise amplifier | |
| CN1767374B (en) | Low noise amplifier and method for amplifying input signal | |
| CN100559706C (en) | Radio-frequency differential-to-single-ended converter | |
| CN110120786B (en) | Mixer and wireless communication device | |
| US7176759B2 (en) | Differential low noise amplifier with low power consumption | |
| US8324966B2 (en) | Apparatus and methods for electronic amplification | |
| CN101931368B (en) | Low-noise amplifier | |
| CN101212202B (en) | Frequency mixer with a filtering module for filtering off low-frequency component and reducing noise index | |
| CN210075229U (en) | CMOS radio frequency front-end circuit, chip and wireless communication equipment | |
| CN103391050A (en) | CMOS (Complementary Metal Oxide Semiconductor) low noise amplifying device | |
| US7769360B2 (en) | Adapter for the RF front end processor chip | |
| CN110611520A (en) | CMOS radio frequency front-end circuit, operation method, chip and wireless communication equipment | |
| CN112769440B (en) | Low-power-consumption digital intelligent USBL receiver | |
| US20170230014A1 (en) | Fully integrated low-noise amplifier | |
| CN218587150U (en) | High-gain low-noise amplifier circuit | |
| CN214851145U (en) | Low-noise amplifier circuit for radio frequency receiving front-end chip |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Pucheng Science and Technology Co., Ltd. Assignor: Universal technology (Shenzhen) Co., Ltd. Contract record no.: 2010990000879 Denomination of invention: Single-end input and dual-end output amplifier circuit and signal processing circuit Granted publication date: 20091230 License type: Exclusive License Open date: 20071128 Record date: 20101108 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Universal technology (Shenzhen) Co., Ltd. Assignor: Pucheng Science and Technology Co., Ltd. Contract record no.: 2010990000879 Denomination of invention: Single-end input and dual-end output amplifier circuit and signal processing circuit Granted publication date: 20091230 License type: Exclusive License Open date: 20071128 Record date: 20101108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20180522 |