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Proceedings Paper

High-dynamic-range mixer using novel balun structure
Author(s): Sarjit Bharj; Gordon Charles Taylor; E. J. Denlinger; H. Milgazo
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Paper Abstract

A wide band 6 to 18 GHz mixer has been designed and developed for high dynamic range operation. The mixer utilizes monolithic MESFET quad as a mixing element for the double balanced mixer circuit. The baluns have been developed on low dielectric constant substrates and are fully compatible for a planar approach. The mixer circuit exhibits an IF bandwidth of 2 GHz to 6 GHz and has a measured input intercept point of +25 dBm. The fabricated RF and LO baluns have demonstrated an excellent performance in amplitude and phase up to 21 GHZ. The IF baluns demonstrate similar performance from 1 GHz to 1 0 GHz. The design is transferable to milli-meter range. A 0.5 micron gate length MMIC process was used to fabricate the matched quad. GaAs FET's with double recessed channels, for high breakdown and low parasitic resistance, were used.

Paper Details

Date Published: 1 July 1991
PDF: 10 pages
Proc. SPIE 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems, (1 July 1991); doi: 10.1117/12.44513
Show Author Affiliations
Sarjit Bharj, David Sarnoff Research Ctr. (United States)
Gordon Charles Taylor, David Sarnoff Research Ctr. (United States)
E. J. Denlinger, David Sarnoff Research Ctr. (United States)
H. Milgazo, David Sarnoff Research Ctr. (United States)


Published in SPIE Proceedings Vol. 1475:
Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems
Regis F. Leonard; Kul B. Bhasin, Editor(s)

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