Waveguide filter with three apertures for passing transmission frequencies and blocking interference frequencies
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United States of America Patent
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Jan 22, 2002
Grant Date -
N/A
app pub date -
Dec 30, 1997
filing date -
Jun 30, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A band-pass filter for a waveguide, which additionally serves as a blocking filter for the concerted suppression of interference frequencies. In addition to a centrally arranged aperture (3), a waveguide aperture has two identically designed apertures (4), which are laid out for natural resonance for an interference frequency f (ind S1) to be blocked by the waveguide filter, and are arranged symmetrical to the central aperture opening (3). In waveguide devices, the invention is used to meet the statutory frequency specifications and simultaneously suppress interference frequencies.
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