Broadband waveguide mixer

Details Broadband waveguide mixer Broadband waveguide mixer

1975-03-21

1976-01-13

Libman, George H.

321 69W, H04B 126

Patent

active

039328155

ABSTRACT:
A broadband waveguide mixer suitable for the microwave and millimeter wave regions is described. The mixer is characterized by having a unique dual-guide mixer mount through which extends two parallel and spaced waveguides. The RF wave and the local oscillator wave are respectively impressed on the two waveguides via a hybrid coupler. A pair of crossbars extend through each waveguide. A pair of diodes connected back-to-back are disposed in each waveguide and are connected to the respective crossbars. Each pair of diodes has a polarity opposite to that of the other pair. The output is derived from a coaxial cable connected to the adjacent ends of the two crossbars. The input signals may be applied by a folded hybrid tee or a short slot hybrid coupler to simplify the input structure. The mixer has low noise and broadband performance.

REFERENCES:
patent: 3512090 (1970-05-01), Mouw
patent: 3532989 (1970-10-01), Saad
patent: 3553584 (1971-01-01), Walsh
patent: 3584306 (1971-06-01), Spacek
patent: 3638126 (1972-01-01), Spacek
patent: 3665508 (1972-05-01), Gawler
patent: 3706042 (1972-12-01), Tenenholtz
IEEE Transactions, Vol. MTT-16, No. 11; Nov. 1968, pp. 911-918.
IEEE-GMTT Microwave Symposium, May 19, 1971, pp. 188-190.

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