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A 530-GHz balanced mixer

Chattopadhyay, Goutam and Rice, Frank and Miller, David and LeDuc, Henry G. and Zmuidzinas, Jonas (1999) A 530-GHz balanced mixer. IEEE Microwave and Guided Wave Letters, 9 (11). pp. 467-469. ISSN 1051-8207.

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We report on the design and performance of a 530-GHz balanced SIS mixer, the first balanced mixer in this frequency range. This quasi-optical balanced mixer utilizes a cross-slot antenna on a hyperhemispherical substrate lens with eight superconductor-insulator-superconductor (SIS) junctions and a 180° lumped element IF hybrid circuit. The local oscillator (LO) and the radio frequency (RF) signal, orthogonal in polarization to each other, are coupled to the mixer using a wire-grid polarizer. The noise performance of the mixer is excellent, giving an uncorrected receiver noise temperature of 105 K (DSB) at 528 GHz.

Item Type:Article
Additional Information:© Copyright 1999 IEEE. Reprinted with permission Manuscript received July 1, 1999; revised September 28, 1999. This work was supported in part by NASA/JPL and its Center for Space Microelectronics Technology, by NASA Grants NAG5-4890, NAGW-107, and NAG2-1068, by the NASA/USRA SOFIA instrument development program, and by the Caltech Submillimeter Observatory (NSF Grant AST-9615025).
Subject Keywords:Balanced mixer, low noise, superconductor–insulator–superconductor (SIS) junctions
Record Number:CaltechAUTHORS:CHAieeemgwl99
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3295
Deposited By: Archive Administrator
Deposited On:25 May 2006
Last Modified:26 Dec 2012 08:53

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