Microwave mixer apparatus

Details Microwave mixer apparatus Microwave mixer apparatus

1984-08-20

1986-07-29

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455326, 455327, 455333, H04B 126

Patent

active

046034358

ABSTRACT:
A 3 dB quadrature coupler is connected to an RF input terminal and an LO input terminal, and its outputs are connected to first and second antiphase power dividers. The outputs of the first and second antiphase power dividers are individually connected to the gates of four field effect transistors (FET's). The drains of two of the FET's are connected together and to a low pass filter, and the drains of the other two FET's are connected together and to a second low pass filter. The outputs of the filters are connected to the two inputs of a differential amplifier, and the IF signal is taken at the output of the differential amplifier.

REFERENCES:
patent: 3532989 (1970-10-01), Saad
patent: 3611153 (1971-10-01), Wen
patent: 3652941 (1972-03-01), Neuf
patent: 3659206 (1972-04-01), Hallford
patent: 3678395 (1972-07-01), Hunton et al.
patent: 3706042 (1972-12-01), Tenenholtz
patent: 3735267 (1977-05-01), Napoli
patent: 3772599 (1973-11-01), Ernst et al.
patent: 3939430 (1976-02-01), Dickens et al.
patent: 4118670 (1978-10-01), Dickens
patent: 4291415 (1981-09-01), Buntschuh
patent: 4415867 (1983-11-01), Rubin
patent: 4435848 (1984-03-01), Sedlmair

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