Microwave mixing circuit

Details Microwave mixing circuit Microwave mixing circuit

1981-10-23

1983-10-25

Chin, Tommy P.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455327, 333176, H04B 126

Patent

active

044123515

ABSTRACT:
A microwave mixing circuit comprises a main transmission line having an input port for receiving an input high frequency and an output port, a band pass filter responsive to a local oscillation frequency, first and second band stop filters, and a mixing diode connected to the output port. The local oscillation frequency applied via the band pass filter to the main transmission line is prevented from being transmitted toward the input port because of the first band stop filter, while an image frequency produced by the diode is reflected by the second band stop filter to be applied to the diode.

REFERENCES:
patent: 3310748 (1967-03-01), Putnam
patent: 3611153 (1973-10-01), Wen
patent: 3939430 (1976-02-01), Dickens
patent: 4211977 (1980-07-01), Shinkawa
Empfanger fur das 12 GHZ-Fernsehen, Rundfunktechn Mitteilugnen Band 15 (1971) H.,4, 8/3/71, by Von Martin Lemke et al., pp. 163-166.
A 20-MHZ Integrated Balanced Mixer, by Tohru Araki et al., IEEE Transactions on Microwave Theory and Techniques, vol. MIT-19, No. 7 (Jul. 1971).

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