Rat-race mixer circuit

Details Rat-race mixer circuit Rat-race mixer circuit

1975-10-28

1977-02-15

Griffin, Robert L.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 84M, 321 69W, H04B 126

Patent

active

040084388

ABSTRACT:
A mixer circuit using a rat-race constituted by disposing microstrip lines on one surface of a substrate to provide a loop-shaped transmission line and four transmission lines connected to the loop. In the rat-race, two of the four transmission lines are disposed within the loop of the loop-shaped transmission line. A conductor penetrates the substrate at the center of the loop of the loop-shaped transmission line, and a pair of diodes are connected respectively between this conductor and the two transmission lines disposed within the loop so that an intermediate frequency signal obtained by subjecting a high frequency signal to frequency conversion can be derived from the conductor at the other surface side of the substrate.

REFERENCES:
patent: 3512091 (1970-05-01), Blixt et al.
patent: 3534267 (1970-10-01), Hyltin
patent: 3624508 (1971-11-01), Kach
patent: 3950703 (1976-04-01), Reindel

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