Title :
An 86-106 GHz quasi-integrated low noise Schottky receiver
Author :
Ali-Ahmad, Walid Y. ; Bishop, William L. ; Crowe, Thomas W. ; Rebeiz, Gabriel M.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
fDate :
4/1/1993 12:00:00 AM
Abstract :
An integrated planar receiver has been developed and tested over the 82-112 GHz bandwidth. The quasi-integrated antenna used in the receiver has a high gain, a high Gaussian coupling efficiency and a wide bandwidth. The mixer design consists of a planar GaAs Schottky diode placed at the feed of a dipole probe suspended inside an integrated horn antenna. The diode uses an etched surface channel and a planar air bridge for reduced parasitic capacitance. At 92 GHz, the room temperature antenna-mixer exhibits a double sideband (DBS) conversion loss and noise temperature of 5.5±0.5 Db and 770 K±50 K, respectively. The measured DSB conversion loss, and noise temperature over a 20-GHz bandwidth (86-106 GHz) remain less than 6.2±0.5 dB and 1000 K±50 K, respectively. The low cost of fabrication and simplicity of the design makes it ideal for millimeter- and submillimeter-wave receivers
Keywords :
Schottky-barrier diodes; antenna radiation patterns; horn antennas; losses; microwave integrated circuits; mixers (circuits); radio receivers; 20 GHz; 30 GHz; 5.5 dB; 6.2 dB; 82 to 112 GHz; DSB conversion loss; EHF; GaAs; MM-wave device; Schottky receiver; dipole probe; double sideband; etched surface channel; high Gaussian coupling efficiency; high gain; integrated horn antenna; integrated planar receiver; low cost fabrication; low noise; millimetre-wave receivers; mixer design; noise temperature; parasitic capacitance; planar Schottky diode; planar air bridge; quasi-integrated antenna; room temperature antenna-mixer; submillimeter-wave receivers; wide bandwidth; Bandwidth; Dipole antennas; Feeds; Gallium arsenide; Horn antennas; Probes; Receiving antennas; Schottky diodes; Temperature; Testing;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
