Single ku-band multi-polarization gallium arsenide transmit...

Details Single ku-band multi-polarization gallium arsenide transmit... Single ku-band multi-polarization gallium arsenide transmit...

2006-03-07

2006-03-07

Lee, Wilson (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C342S157000, C342S158000, C342S175000, C342S188000

Reexamination Certificate

active

07009562

ABSTRACT:
The present invention is a wide band GaAs microwave monolithic integrated circuit (MMIC) transmit chip that is capable of transmitting linearly or circularly polarized signals when connected to a pair of orthogonal cross-polarized antennas. In an active phased-array antenna environment, this transmit chip is capable of transmitting signals with different scan angles. This invention also contains a digital serial to parallel converter that uses TTL signal to control the phase shifter and attenuator circuits that are required for controlling the polarization and scan angle of the transmitted signal.

REFERENCES:
patent: 4088970 (1978-05-01), Fassett et al.
patent: 5030961 (1991-07-01), Tsao
patent: 5659322 (1997-08-01), Caille
patent: 5933108 (1999-08-01), Mohuchy
patent: 6828932 (2004-12-01), Jenabi
S.A. Raby et al.; “Ku-Band Transmit Phased Array Antenna for use in FSS Communication Systems”; IEEE-MTS-S (2000).
“Ku-Band Transmit Phased Array Antenna for use in FSS Communication Systems,” by S.A. Raby et al., IEEE-MTS-S (2000). (4 pages).
“Communications Systems Group Wins Key DSCS Program,” by Anonymous, ITT Industries System Divison News, Sep. 2000. (See p. 3 out of pp. 1-12).

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