High-dynamic-range mixer using novel balun structure

Sarjit Bharj; Gordon Charles Taylor; E. J. Denlinger; H. Milgazo

doi:10.1117/12.44513

1 July 1991 High-dynamic-range mixer using novel balun structure

Sarjit Bharj, Gordon Charles Taylor, E. J. Denlinger, H. Milgazo

Proceedings Volume 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems; (1991) https://doi.org/10.1117/12.44513
Event: Orlando '91, 1991, Orlando, FL, United States

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.

Citation Download Citation

Sarjit Bharj, Gordon Charles Taylor, E. J. Denlinger, and H. Milgazo "High-dynamic-range mixer using novel balun structure", Proc. SPIE 1475, Monolithic Microwave Integrated Circuits for Sensors, Radar, and Communications Systems, (1 July 1991); https://doi.org/10.1117/12.44513

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