A video amplifier for a radar receiver includes a temperature compensating attenuator. The attenuator includes a temperature sensitive device, such as a thermistor, arranged in a voltage divider network and is coupled in cascade between two filter stages. Each of the filter stages has a bandpass characteristic...http://www.google.es/patents/US6903679?utm_source=gb-gplus-sharePatente US6903679 - Video amplifier for a radar receiver
