Wave transmission lines and networks – Resonators – Temperature compensated
Patent
1986-01-02
1987-04-28
LaRoche, Eugene R.
Wave transmission lines and networks
Resonators
Temperature compensated
333235, 333202, H01P 710, H01P 120
Patent
active
046617906
ABSTRACT:
An RF filter (100) includes a ceramic resonator (116) sandwiched between first and second compensating discs (114 and 120) for temperature compensation, low loss mounting and heat sinking of the ceramic resonator (116). Good thermal contact between the ceramic resonator (116) and discs (114 and 120) is produced by a compressive force applied by copper plates (112 and 128) and copper can (124). The resonant frequency of the RF filter is tuned by means of a copper-plated tuning shaft (104) and ceramic tuning slug (118) which are positioned by brass bushing (134) in copper pipe (130 and 132). Input and output signals are coupled to the RF filter via respective probes (122).
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Gannon Mark A.
Kommrusch Richard S.
Yester, Jr. Francis R.
Hackbart Rolland R.
LaRoche Eugene R.
Lee Benny T.
Motorola Inc.
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