Title :
Experimental investigation on NRD-guide dual-mode filters
Author :
Di Nallo, C. ; Frezza, F. ; Galli, A. ; Gerosa, G. ; Guglielmi, M. ; Lampariello, P.
Author_Institution :
Dept. of Electron. Eng., Rome Univ., Italy
Abstract :
New interesting possibilities of implementation of high-performance dual-mode filters are analyzed by considering the non-radiative dielectric (NRD) waveguide components. The excitation and coupling of dual modes are investigated for NRD circular- and square-section dielectric resonators, and the influence of different perturbation techniques, such as tuning screws or cuts, is discussed. Various promising topologies of NRD-guide dual-mode filters are then suggested and tested to implement both classical and elliptic configurations.<>
Keywords :
dielectric resonators; dielectric waveguides; microwave filters; passive filters; perturbation techniques; tuning; waveguide components; NRD waveguide components; NRD-guide; circular-section dielectric resonators; coupling; cuts; dual-mode filters; excitation; nonradiative dielectric waveguide components; perturbation techniques; square-section dielectric resonators; tuning screws; Dielectrics; Fasteners; Perturbation methods; Resonator filters; Testing; Topology; Waveguide components;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335328
