Cryogenic dielectric resonators for future microwave communication systems

Abstract

Recent progress in manufacturing dielectric ceramics and single crystals with high dielectric constant and low microwave losses has turned out to be a challenge for the development of novel devices for satellite communication. From this development device performance is expected to benefit for possible device operation temperatures ranging from cryogenic temperatures around 50-150 K (achievable with one-stage closed cycle refrigerators) over temperatures from 150 to 200 K (in principal achievable with radiation cooling) towards room temperature, if novel dielectric resonator structures with lower loss contribution of the metallic housing became available.

Design aspects for fixed dimension TE011mode high-QHTS shielded sapphire dielectric resonators for low-temperature electronics applications

“…Cryogenically cooled low-noise high-stability dielectric resonators (DRs) have found extensive application in modern electronic systems, e.g., telecommunication, radar and meterological applications [1,2]. Single-crystal DRs exhibit a much higher Q-value at cryogenic temperatures compared to their ceramic counterparts.…”