A 75 GHz to 115 GHz quasi-optical amplifier

A wideband quasi-optical amplifier employing two pyramidal back-to-back horns has been developed. Using a four-stage W-band low noise amplifier (LNA) designed and fabricated by Martin Marietta Laboratories, the quasi-optical amplifier gives a system gain greater than 11 dB from 86 GHz to 113 GHz without any low frequency oscillations. A peak system gain of 15.5 dB is measured at 102 GHz, and the measured noise figure of the system is 7.4 dB at 94 GHz. The quasi-optical amplifier design maintains the same polarization of the received and transmitted signal, provides better than -40 dB isolation, and can be fabricated monolithically at millimeter-wave frequencies. >

[1]  Gabriel M. Rebeiz,et al.  Design and analysis of quasi-integrated horn antennas for millimeter and submillimeter-wave applications , 1993 .

[2]  Gabriel M. Rebeiz,et al.  Millimeter-wave integrated-horn antennas. I. Theory , 1991 .

[3]  D. Rutledge,et al.  INTEGRATED-CIRCUIT ANTENNAS. , 1983 .

[4]  D. Rutledge,et al.  A grid amplifier , 1991 .

[5]  G.M. Rebeiz,et al.  A quasi-optical amplifier , 1993, IEEE Microwave and Guided Wave Letters.

[6]  S. Weinreb,et al.  MM-wave MIMIC receiver components , 1991, IEEE 1991 Microwave and Millimeter-Wave Monolithic Circuits Symposium. Digest of Papers.