(54) HIGH GAIN OMNIDIRECTIONAL ANTENNA AND RELATED METHOD
(75) Inventor: Behram M. Dacosta, San Diego, CA (US)
(73) Assignees: Sony Corporation, Tokyo (JP); Sony Electronics, Inc., Park Ridge, NJ (US)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 640 days.
(21) Appl. No.: 10/396,909
(22) Filed: Mar. 25, 2003
(65) Prior Publication Data
US 2004/0192203 Al Sep. 30, 2004
(51) Int. CI.
H04Q 7/20 (2006.01)
H04B 7/14 (2006.01)
(52) U.S. CI 455/562.1; 455/524; 455/25
(58) Field of Classification Search 455/25,
455/63.4, 562.1, 575.7, 69, 561, 13.3, 560, 455/524, 525, 101 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
5,245,347 A * 9/1993 Bonta et al 342/149
5,661,489 A * 8/1997 Baker 342/373
5,890,067 A * 3/1999 Chang et al 455/446
An antenna system which is capable of having omnidirectional transmitting and receiving capabilities is disclosed. The antenna system includes a plurality of directional antennas coupled to a transceiver, wherein the antennas are configured to have their main lobes extend in different directions. In a specific embodiment, there are six directional antennas configured to have their main lobes extend substantially along the positive and negative x-axes, the positive and negative y-axes, and the positive and negative z-axes of a three-dimensional Cartesian system. The six directional antennas may also be configured to transmit and receive signals to and from overlapping free space regions to give it omnidirectional coverage. Also disclosed are a network device which employs such antenna system, a wireless network system which employs a plurality of network devices each having such antenna system, and a method and software module to transmit and receive data using such antenna system.
22 Claims, 5 Drawing Sheets