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Patent

Matched high Q, high frequency resonators

TLDR
In this paper, the resonator is formed with a primary line which is slightly less than a ltiple of a half wavelength long, a tee, and a matching stub, and the primary line and the stub are adjustable to make the total length a multiple of one half wavelength.
Abstract
The resonator is formed with a primary line which is slightly less than a ltiple of a half wavelength long, a tee, and a matching stub. The primary line and the stub are adjustable to make the total length a multiple of one half wavelength. A mechanical link can be connected across the two adjustable lengths so as to maintain a total length of a multiple integral of one half wavelength.

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