Methods of tuning and temperature compensating a variable topogr

Details Methods of tuning and temperature compensating a variable topogr Methods of tuning and temperature compensating a variable topogr

1999-05-14

2000-05-02

Lee, Benny

Wave transmission lines and networks

Resonators

Coaxial or shielded

333229, 333232, 333234, 333235, H01P 700, H01P 706, H01P 704, H01P 130

Patent

active

060577487

ABSTRACT:
An electromagnetic wave component uses one or more diaphragms secured to the interior of a waveguide structure to tune its resonant frequency, with each diaphragm engaged by one or more adjustment members that deform it. The adjustment members are preferably screws that are threaded through the structure to push and/or pull on the diaphragms, thereby tuning the electromagnetic wave component. The shift in the resonant frequency of the electromagnetic wave component due to temperature-induced dimensional changes is mitigated if the materials used for the diaphragm, the adjustment members and the structure which houses the diaphragm are chosen to have an appropriate combination of thermal coefficients of expansion.

REFERENCES:
patent: 2423383 (1947-07-01), Hershberger
patent: 2486129 (1949-10-01), De Walt et al.
patent: 3121205 (1964-02-01), Foss
patent: 3222564 (1965-12-01), De Pue, Jr. et al.
patent: 5420554 (1995-05-01), Gehrke

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