Tunable resonant cavity filter structure with enhanced ground re

Wave transmission lines and networks – Resonators – Coaxial or shielded

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

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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.

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