Microstripline microwave mixer using waveguide filter

Details Microstripline microwave mixer using waveguide filter Microstripline microwave mixer using waveguide filter

1990-10-17

1992-06-23

Kuntz, Curtis

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455330, H04B 126

Patent

active

051251108

ABSTRACT:
A microstripline microwave mixer circuit includes a waveguide microstrip filter formed by coupling a section of ridged waveguide to a microstripline circuit. The ridged waveguide based microstrip filter both serves as a high-pass filter for RF input signals and also provides a suitable termination for the RF input side of the mixer circuit resulting in a compact multifrequency mixer circuit with good performance. The section of ridged waveguide is coupled to the microstripline circuit such that the dielectric substrate of the microstripline circuit is within the waveguide section thereby increasing the effective dielectric constant of the waveguide interior and decreasing the dimensions of the waveguide. This configuration of the high-pass filter presents a smaller component than would be present in air-filled waveguide mixer circuits.

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