Waveguide-to-microstrip transition
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United States of America Patent
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-
Mar 17, 1987
Grant Date -
N/A
app pub date -
Jan 31, 1985
filing date -
Jan 31, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A waveguide-to-coax-to-microstrip transition includes a rectangular waveguide portion having a ridged impedance transformer attached to the lower wide wall. The waveguide portion is closed off by a conductive wall through an aperture in which the center conductor of a coaxial transmission-line passes. A ridge extension isolated from all four walls of the rectangular waveguide couples the ridge to the center-conductor of the coax. For broadbanding, a glass plate is located between the ridge extension and the upper wide wall. The strip conductor of a microstrip transmission-line is connected to the center conductor of the coaxial transmission-line. The plane of the dielectric plate of the microstrip may be oriented parallel to the narrow wall of the rectangular waveguide to achieve high packing density.
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