Title :
A novel coupling method for dual mode waveguide or dielectric resonator filters
Author :
Chen, S.-W. ; Zaki, K.A.
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
A novel method for coupling dual-mode waveguide or dielectric resonator cavities is described and analyzed. The method provides a practical, flexible, economic means of replacing irises, and it offers easy tunability of the coupling over a wide range of coupling values. Calculation of the resonator´s coupling parameters using the mode matching methods yields accurate results and is verified by measurements. An experimental X-band four-pole dual mode elliptical function waveguide cavity filter using the coupling method was constructed and tested. The test results show excellent agreement with theory.<>
Keywords :
cavity resonators; dielectric resonators; microwave filters; passive filters; tuning; waveguide couplers; waveguide theory; X-band; coupling method; dielectric resonator cavities; dielectric resonator filters; dual mode waveguide; easy tunability; four-pole dual mode elliptical function waveguide cavity filter; mode matching methods; replacing irises; wide range of coupling values; Coupling circuits; Dielectric measurements; Educational institutions; Fasteners; Iris; Magnetic field measurement; Mode matching methods; Resonator filters; Testing; Waveguide discontinuities;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99560
