Method of Obtaining Pressure and Temperature Insensitive Microwave Cavity Resonators

1 August 1957

journal article
research article
Published by AIP Publishing in Review of Scientific Instruments

Vol. 28 (8) , 620-623
https://doi.org/10.1063/1.1715953

Abstract

This paper describes a method of fabricating cavity resonators having very low temperature frequency dependence and also describes a means of building pressure insensitive cavity resonators. Simple schemes of compensation using invar walls with steel or brass end plates for TE₀₁₁ cavity resonators are found to be unsatisfactory due to hysteresis type effects. With the arrangement described fixed frequency resonators are obtained having stable temperature‐frequency coefficients less than ±0.2 ppm/°C and pressure‐frequency characteristics of less than 0.003 ppm/mbar.

Keywords

This publication has 3 references indexed in Scilit:

An Airborne Microwave Refractometer
Review of Scientific Instruments, 1952
Apparatus for Recording Fluctuations in the Refractive Index of the Atmosphere at 3.2 Centimeters Wave-Length
Review of Scientific Instruments, 1950
Frequency Stabilization of Microwave Oscillators
Proceedings of the IRE, 1947