T/R module with error correction

Details T/R module with error correction T/R module with error correction

1989-10-16

1992-03-03

Hellner, Mark

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342368, 330130, 330200, H03F 368, H01Q 326

Patent

active

050936670

ABSTRACT:
A C-band transmit-receive module for an active aperture radar is provided employing gallium arsenide chips preferably manufactured by the Multifunction Self-Aligned Gate process and employing both open and closed loop error correction for both phase and amplitude to correct for errors due to temperature, power supply variations, operating bandwidth and phase states.
In a second embodiment a power output amplifier is provided employing predriver, driver and power amplifier stages wherein the power amplifier or the power amplifier and the driver may be switched out of the circuit if not needed. The bias on the amplifier may also be lowered if not needed. This is done to increase efficiency and reduce temperature.
In both embodiments class B amplifier are preferred.

REFERENCES:
patent: 4158179 (1979-06-01), Sakai et al.
patent: 4454480 (1984-06-01), Allfather et al.
patent: 4724441 (1988-02-01), Fithian et al.
patent: 4791421 (1988-12-01), Morse et al.
patent: 4924191 (1990-05-01), Erb et al.

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