Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1996-08-26
1998-09-01
Pascal, Robert J.
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333204, 333206, 333208, H01P 1201, H01P 1203, H01P 1205
Patent
active
058016058
ABSTRACT:
A distributed TEM resonator band pass filter has a set of rod-shaped resonators arranged in an interdigital line with alternate ones of the resonators being grounded to opposite walls of a housing. Each resonator has an ungrounded end which is capacitively coupled to a wall of the housing. Partitions, grounded to the housing, are located between successive ones of the resonators. Each partition closes off only a portion of the space between neighboring resonators to leave a coupling aperture. The interdigital arrangement provides for reduced loss and a higher Q. Input and output ports are provided at opposite ends of the interdigital line. The resonators may be constructed in the form of a suspended substrate, a stripline, or a microstrip configuration.
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R. Kurzrok, "Design of Interstage Coupling Apertures for Narrow-Band Tunable Coaxial Band-Pass Filters", IRE Transactions on Microwave Theories and Techniques, pp. 143-144, Mar., 1962.
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Microphase Corporation
Pascal Robert J.
Summons Barbara
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