Title :
Multifunction small-signal chip set for transmit/receive modules
Author :
Willems, D.A. ; Coluzzi, Michal E. ; Tantod, Shukdev S. ; Bahl, Inder J. ; Pollman, Michael D. ; Jorgenson, Jon D. ; Griffin, Edward L. ; Andricos, Constantine ; Brukiewa, Thomas F.
Author_Institution :
ITT Gallium Arsenide Technol. Center, Roanoke, VA, USA
fDate :
12/1/1990 12:00:00 AM
Abstract :
Design and test results for small-signal multifunction MMICs (monolithic microwave integrated circuits) for C-band transmit/receive (T/R) modules are presented. This chip set includes the entire receive path and a portion of the transmit path (seven stages of amplification and 11 passive circuits) in just four chips. These ICs, fabricated with the multifunction self-aligned gate (MSAG) process, demonstrate a high level of integration, excellent performance, and a good yield. The variable-gain low-noise amplifier has 30±1 dB gain and 2.5 dB noise figure, the phase shifter SPDT (single-pole double-throw) switch has 8±1 dB loss, the T/R buffer amplifier has 6.5±0.2 gain and 3.5 dB noise figure, and the variable gain buffer amplifier has 8.5±0.5 dB gain and 2.5 dB noise figure
Keywords :
MMIC; field effect integrated circuits; microwave amplifiers; modules; phase shifters; radar equipment; switching circuits; 2.5 dB; 3.5 dB; 6.5 to 30 dB; C-band; LNA; MESFET circuits; MSAG process; SPDT switch; T/R buffer amplifier; low-noise amplifier; monolithic microwave integrated circuits; multifunction MMICs; multifunction self-aligned gate; phase shifter; single-pole double-throw; small-signal chip set; transmit/receive modules; variable-gain; Circuit testing; Gain; Integrated circuit testing; Low-noise amplifiers; MMICs; Microwave integrated circuits; Monolithic integrated circuits; Noise figure; Passive circuits; Switches;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
