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

Volume

15

Issue

12

fYear

2005

Firstpage

865

Lastpage

867

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;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2005.859992

Filename

1549893