H - Electricity – 03 – F
Patent
H - Electricity
03
F
328/185, 333/24
H03F 3/16 (2006.01) H03C 1/54 (2006.01) H03F 3/26 (2006.01)
Patent
CA 1252834
DOCKET R4351.01 FRA:mfk MULTIFUNCTION FLOATING FET CIRCUIT ABSTRACT OF THE DISCLOSURE A transistor circuit is provided with a symmetri- cal floating configuration for attaining multifunction operation of a transistor having symmetrical source and drain characteristics, preferably a GaAs MESFET. The circuit includes a balun which may be configured as a transformer, a differential amplifier, or a magic-tee waveguide depending on the frequency of signals to be processed by the circuit. Balanced terminals of the balun may be directly or capacitively coupled to source and drain terminals of the transistor. Tuning circuits are employed for applying signals having different fre- quencies to the transistor and for extracting inter- modulation products generated by the transistor in response to the signals at the different frequencies. With the direct connection between the balun and the transistor, alternating voltages may be impressed between the terminals of the transistor to alternate source and drain regions of the transistor. Functions of amplification, modulation, bipolar attenuation, four- quadrant multiplication and correlation, power frequency tripling, and mixing are obtainable. The transistor may be replaced with a pair of transistors connected in series or in antiparallel connection. -1-
515039
Hazeltine Corporation
Johnson Douglas S. Q.c.
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