Title :
A low-noise fixed-tuned 300-360-GHz sub-harmonic mixer using planar Schottky diodes
Author :
Thomas, Bertrand ; Maestrini, Alain ; Beaudin, Gèrard
Author_Institution :
Lab. d´´Etude du Rayonnement et de la Matiere en Astrophysique, Obs. de Paris, France
Abstract :
This letter presents the design and fabrication of a low-noise fixed-tuned 300-360-GHz sub-harmonic mixer, featuring an anti-parallel pair of planar Schottky diodes fabricated by the University of Virginia and flip-chipped onto a suspended quartz-based microstrip circuit. The mixer exhibits a double side band (DSB) equivalent noise temperature lower than 900K over 18% of bandwidth (300-360-GHz), with 2 to 4.5mW of local oscillator (LO) power. At room temperature, a minimum DSB mixer noise temperature of 700K and conversion losses of 6.3dB are measured at 330GHz.
Keywords :
Schottky diode mixers; circuit testing; flip-chip devices; microstrip circuits; network synthesis; submillimetre wave mixers; 2.5 to 4 mW; 300 to 360 GHz; 6.3 dB; 700 K; Schottky diode mixers; flip chipping; low-noise fixed-tuned sub-harmonic mixer; planar Schottky diodes; submillimeter-wave mixers; suspended quartz-based microstrip circuit; Anodes; Bandwidth; Circuit noise; Electrons; Fabrication; Instruments; Mars; Parasitic capacitance; Schottky diodes; Temperature; Hot electron noise; Schottky-diode receiver; sub-harmonic mixer; submillimeter-wave; wide band mixer;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.859992
