Title :
A cryogenic focal plane array for 85-115 GHz using MMIC preamplifiers
Author :
Erickson, Neal R. ; Grosslein, Ronald M. ; Erickson, Ronna B. ; Weinreb, Sander
Author_Institution :
Dept. of Phys. & Astron., Massachusetts Univ., Amherst, MA, USA
fDate :
12/1/1999 12:00:00 AM
Abstract :
A new focal plane array for 85-115 GHz is described in this paper. This array has 16 pixels, and uses InP monolithic-microwave integrated-circuit preamplifiers with 40-dB gain, followed by a wide-band subharmonic mixer to convert to a 5-20-GHz intermediate-frequency band. A low-loss isolator is used to achieve an excellent input match. Square corrugated feed horns are used for efficient filling of the focal plane. Critical components are operated at a temperature of 20 K. Noise temperature varies from 50 to 130 K, including all pixels across the full band
Keywords :
III-V semiconductors; MMIC amplifiers; cryogenic electronics; focal planes; indium compounds; millimetre wave receivers; preamplifiers; 20 K; 40 dB; 85 to 115 GHz; IF band; InP; InP MMIC preamplifier; cryogenic focal plane array; feed horn; isolator; millimeter wave receiver; noise temperature; wideband subharmonic mixer; Cryogenics; Feeds; Filling; Impedance matching; Indium phosphide; Isolators; MMICs; Preamplifiers; Temperature; Wideband;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
