Electronically tunable switched-resonator filter bank
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United States of America Patent
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Issued Date -
Sep 22, 2005
app pub date -
Jun 29, 2004
filing date -
Mar 17, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A voltage-controlled tunable suspended stripline planar filter, comprising a first resonator, the first resonator including at least one tunable capacitor and at least one PIN diode, and a second resonator coupled to the first resonator, the second resonator including at least one tunable capacitor and at least one PIN diode. The tunable filter may further comprising a low-pass section between a coupling line coupling said first and said second resonator and an input port and the first resonator may be coupled to the second resonator through proximity coupling. Further, in one embodiment of the present invention the at least one PIN diode in the first resonator may be two PIN diodes and the at least one tunable capacitor in the first resonator may be two tunable capacitors.
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