A novel Re-entrant Cap Tuning Technique For TM-Mode Dielectric Resonators and Filters

This paper reports a new tuning technique for TM mode dielectric resonators and filters. The proposed concept is based on the use of a hollow envelope (cap) to tune the resonant frequency instead of/in addition to the conventional intruding screw/rod-based method. The presented technique provides highly desirable advantages of tunable components including the wider tuning capabilities, simple configuration, high-power compatibility, and the improved Q factor. For proof of concept purposes, a tunable resonator is designed, fabricated, and measured. Also, a comparison with the conventional tuning technique is presented. The measured results demonstrate a wide tunability > 90% with a high Q-factor up to 3119 promoting the application of the proposed mechanism in high-performance tunable components.


Use and reproduction:

No license. The provisions of the German Copyright Act (UrhG) apply.

Please note that individual components of the publication may be subject to other licensing or copyright conditions.


Citation style:
Could not load citation form.