Tunable resonant cavity filter structure with enhanced ground re

Details Tunable resonant cavity filter structure with enhanced ground re Tunable resonant cavity filter structure with enhanced ground re

1986-12-09

1988-10-04

LaRoche, Eugene R.

Wave transmission lines and networks

Resonators

Coaxial or shielded

333224, 333207, 174 51, H01P 704, H05K 502

Patent

active

047758473

ABSTRACT:
A tunable resonant cavity filter structure is disclosed which includes an enhanced ground return internal to the cavity which effectively eliminates generation of deterioration wide band noise and optimizes unloaded Q as well as rending resonant frequency stable with vibration. In its preferred form, the enhanced ground return is in the form of a ground return clip with reliant radial projections that mate with the threads of the threadable tuning element used to determine final operating frequency. The radial projections are deflected in cantilever fashion so as to generate sufficient pressure to break thru any oxides in the tuning element threads and ensure metal-to-metal contact.

REFERENCES:
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patent: 2920286 (1960-01-01), Havstad
patent: 3390369 (1968-06-01), Zauertnik et al.
patent: 3516030 (1970-06-01), Brumbelow
patent: 3631363 (1971-12-01), Miller
patent: 3639883 (1972-02-01), Drapkin
patent: 3747044 (1973-07-01), Vazzaro
patent: 3786399 (1974-01-01), McHattie
patent: 4494093 (1985-01-01), Owlett
patent: 4623764 (1986-11-01), Petre et al.

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