Title :
Wideband bidirectional MMIC amplifiers for new generation T/R module
Author :
Tsukii, T. ; Houng, S.G. ; Schindler, M.J.
Author_Institution :
Raytheon Co., Goleta, CA, USA
Abstract :
Two novel, bidirectional amplifier approaches conceived and demonstrated with MMICs (monolithic microwave integrated circuits), are presented. These amplifiers are needed in bidirectional transmit/receive (T/R) modules, where close-gain and phase tracking are critical. Excellent gain and phase tracking are inherent in the presented bidirectional amplifier approaches since the same gain elements are used in both the transmit and receive modes. The bidirectional distributed amplifier (BDA) has exhibited better than +or-0.4 dB in gain tracking and +or-2.5 degrees in phase tracking between the transmit and receive modes over a 2-18-GHz band. The bidirectional balanced amplifier (BBA) has shown better than +or-0.4 dB in gain tracking and +or-1.5 degrees in phase tracking over a 6-18-GHz band.<>
Keywords :
MMIC; linear integrated circuits; microwave amplifiers; power amplifiers; radar equipment; radio equipment; wideband amplifiers; 2 to 18 GHz; SHF; T/R module; bidirectional MMIC amplifiers; bidirectional balanced amplifier; bidirectional distributed amplifier; monolithic microwave integrated circuits; phase tracking; transmit/receive modules; Broadband amplifiers; Couplings; Distributed amplifiers; FETs; Gain; MMICs; Narrowband; Phased arrays; Power transmission lines; Signal processing;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99725
