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Microwave filters with improved spurious performance based on sandwiched conductor dielectric resonators

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2 Author(s)
Weily, A.R. ; Telecom Group, Univ. of Technol., Sydney, NSW, Australia ; Mohan, A.S.

Microwave filters based on a novel resonator comprised of a sandwiched conductor dielectric resonator (SCDR) loaded in a cylindrical cavity are analyzed. The SCDR is a compact resonator which exhibits good spurious performance. The resonant frequencies of the various modes are analyzed, and mode charts, unloaded Q and slot coupling graphs are presented. S-parameters are computed using the FDTD method for a 4-pole elliptic function SCDR filter and compared with measured results. The measured results on spurious performance of the 4-pole filter shows a large improvement over conventional DR filters. The measured results agree closely with predicted values obtained using FDTD

Published in:

Microwave Conference, 2000 Asia-Pacific

Date of Conference:

2000