Title :
A novel coupled method for dual-mode dielectric resonators and waveguide filters
Author :
Chen, Seng-Woon ; Zaki, Kawthar A.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
fDate :
12/1/1990 12:00:00 AM
Abstract :
A novel method for coupling dual-mode waveguide or dielectric resonator cavities is described and analyzed. The method has advantages of providing a practical, flexible, economic means of replacing irises, of offering easy tunability of the coupling over a wide range of coupling values, and of reducing the length of the coupling structure. Calculation of the resonator´s coupling parameters using the mode-matching method yields accurate results and is verified by measurements. Experimental four-pole dual-mode elliptic function filters using the coupling method for empty cavities and dielectric-resonator-loaded cavities were constructed and tested. The test results showed excellent agreement with theoretical analysis
Keywords :
dielectric resonators; equivalent circuits; microwave filters; passive filters; waveguide components; waveguide couplers; coupled method; dielectric-resonator-loaded cavities; dual-mode dielectric resonators; elliptic function filters; mode-matching method; waveguide filters; Costs; Dielectric measurements; Fasteners; Iris; Magnetic analysis; Magnetic field measurement; Production; Resonator filters; Testing; Waveguide discontinuities;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
