Multi-signal transmit array with low intermodulation

Details Multi-signal transmit array with low intermodulation Multi-signal transmit array with low intermodulation

2006-04-11

2006-04-11

Nguyen, Steven (Department: 2665)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S252000, C370S395400

Reexamination Certificate

active

07027454

ABSTRACT:
A transmitter is provided for simultaneously transmitting a plurality of signals in a plurality of directive beams to corresponding destination stations, each destination station located in a separate fan within a service area. The transmitter includes a plurality of beamformers, each beamformer receiving one of the signals to be transmitted to an associated fan, each of the beamformers having a plurality of outputs for each different signal to be transmitted. A plurality of Butler matrices each receive one of the plurality of outputs from the plurality of beamformers for each different signal to be transmitted, each Butler matrix having a plurality of outputs in phased relationship to one another, wherein each of the signals to be transmitted is simultaneously provided across the outputs of each Butler matrix in a phased relationship. An antenna is provided with an aperture within which a two-dimensional array of antenna elements are disposed, wherein equal fractions of adjacent antenna elements are connected to the outputs of each Butler matrix, and wherein each of the plurality of signals are simultaneously transmitted by the entire two-dimensional array of antenna elements. Each of the plurality of beamformers receives steering control signals for steering the direction of each beam within its respective fan.

REFERENCES:
patent: 4105973 (1978-08-01), Arnold et al.
patent: 4831619 (1989-05-01), Rosen
patent: 4837580 (1989-06-01), Frazita
patent: 4882588 (1989-11-01), Renshaw et al.
patent: 4962383 (1990-10-01), Tresselt
patent: 5060266 (1991-10-01), Dent
patent: 5091942 (1992-02-01), Dent
patent: 5115248 (1992-05-01), Roederer
patent: 5132694 (1992-07-01), Sreenivas
patent: 5134417 (1992-07-01), Thompson
patent: 5148485 (1992-09-01), Dent
patent: 5258767 (1993-11-01), Nomoto
patent: 5260935 (1993-11-01), Turner
patent: 5282250 (1994-01-01), Dent et al.
patent: 5373299 (1994-12-01), Ozaki
patent: 5390245 (1995-02-01), Dent et al.
patent: 5506904 (1996-04-01), Sheldrick et al.
patent: 5539730 (1996-07-01), Dent
patent: 5548295 (1996-08-01), Lo Forti
patent: 5548813 (1996-08-01), Charas et al.
patent: 5555257 (1996-09-01), Dent
patent: 5559886 (1996-09-01), Dent et al.
patent: 5563606 (1996-10-01), Wang
patent: 5566168 (1996-10-01), Dent
patent: 5568088 (1996-10-01), Dent et al.
patent: 5574967 (1996-11-01), Dent et al.
patent: 5594941 (1997-01-01), Dent
patent: 5619210 (1997-04-01), Dent
patent: 5619503 (1997-04-01), Dent
patent: 5638024 (1997-06-01), Dent et al.
patent: 5648784 (1997-07-01), Benedicto Ruiz
patent: 5708716 (1998-01-01), Tisdale et al.
patent: 5734349 (1998-03-01), Lenormand et al.
patent: 5754139 (1998-05-01), Turcotte
patent: 5790070 (1998-08-01), Natarajan
patent: 5812089 (1998-09-01), Locke
patent: 5825762 (1998-10-01), Kamin
patent: 5859835 (1999-01-01), Varma et al.
patent: 5977907 (1999-11-01), Gross
patent: 6104343 (2000-08-01), Brookner
patent: 6157621 (2000-12-01), Brown et al.
patent: 0 420 739 (1991-04-01), None
patent: 0474977 (1992-03-01), None
patent: 0 484 662 (1992-05-01), None
patent: 0 543 644 (1993-05-01), None
patent: 0 624 008 (1994-11-01), None
patent: 0 639 035 (1995-02-01), None
patent: 0 767 555 (1997-04-01), None
patent: 0 803 930 (1997-10-01), None
patent: 2 728 366 (1996-06-01), None
patent: 2 751 494 (1998-01-01), None
patent: 2 316 838 (1998-03-01), None
patent: WO 93/09614 (1993-05-01), None

Affiliated with

Also associated with

Rating

Multi-signal transmit array with low intermodulation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-signal transmit array with low intermodulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-signal transmit array with low intermodulation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3565561