Microwave filter cavity with spurious mode suppression
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United States of America Patent
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Issued Date -
May 1, 2003
app pub date -
Oct 31, 2001
filing date -
Oct 31, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A microwave filter cavity that exhibits spurious mode suppression. The microwave filter comprises a metal mode suppression tuning stub located in a replaceable iris plate that is used to suppress unwanted transverse magnetic (TM) modes of the filter cavity, The mode suppression stub is disposed normal to an end wall of the cavity. The mode suppression stub perturbs the E-field of transverse magnetic modes, while having negligible effect on desired transverse electric (TE) modes. The addition of the tuning stub has no effect on filter performance determined by transverse electric modes.
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