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Title: Broadband waveguide mixer
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.
Other info: Inventors: Yuan, Lloyd T. (Hacienda Heights, CA, US) Honda, Jack S. (Palos Verdes, CA, US) Application Number: 560917 Filing Date: 1975-03-21 Publication_date: 1976-01-13 Assignee: TRW Inc. (Redondo Beach, CA) Primary Class(es): 455/326 Other Classes: US Patent Ref:
Other Refs: Other References: IEEE Transactions, Vol. MTT-16, No. 11; Nov. 1968, pp. 911-918. IEEE-GMTT Microwave Symposium, May 19, 1971, pp. 188-190. | |