Title :
Quasi-optical antenna array amplifiers
Author :
Schoenberg, J. ; Mader, T. ; Shaw, Bikash ; Popovic, Z.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
Several quasi-optical transmission wave amplifiers are presented: (1) a two-level power-combining PHEMT patch-antenna lens amplifier with 8 dB of absolute power gain at 9.7 GHz used for beamforming and beam-switching; (2) a saturated class-A polarization-preserving 24-MESFET patch array which produces 0.7 Watts at 10 GHz with 21% power-added efficiency; and (3) an X-band 2-stage low-noise CPW PHEMT amplifier cell using anti-resonant slot antennas with 21.7 dB active gain, 3.2 dB noise figure and a 6% 3 dB bandwidth.<>
Keywords :
coplanar waveguides; lens antennas; microstrip antenna arrays; microstrip circuits; microwave integrated circuits; microwave power amplifiers; power amplifiers; power combiners; slot antenna arrays; 0.7 W; 10 GHz; 21 percent; 21.7 dB; 3.2 dB; 8 dB; 9.7 GHz; HEMT; SHF; X-band; anti-resonant slot antennas; beam-switching; beamforming; low-noise CPW PHEMT amplifier cell; patch-antenna lens amplifier; polarization-preserving patch array; power-combining PHEMT amplifier; quasi-optical antenna array amplifiers; saturated class-A MESFET patch array; transmission wave amplifiers; Antenna arrays; Array signal processing; Coplanar waveguides; Gain; Lenses; Low-noise amplifiers; PHEMTs; Polarization; Slot antennas; Transmitting antennas;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.405933
