Title :
Design of triple mode TE01spl delta// resonator transmission filters
Author :
Walker, Vanessa ; Hunter, Ian C.
Author_Institution :
Filtronic plc, Saltaire, UK
fDate :
6/1/2002 12:00:00 AM
Abstract :
The use of triple mode TE/sub 01/spl delta// cubic resonators for the design of transmission mode filters is presented. Frequency tuning and coupling between modes are studied experimentally. The tunability of all inter-cavity couplings, necessary for the realization of a wide range of transfer functions, is demonstrated with a 6th degree, 5 MHz wide filter at 2 GHz. With an insertion loss of 0.7 dB in a volume of 260 cm/sup 3/, the filter presents a 2:1 volume reduction over conventional TE/sub 01/spl delta// filters.
Keywords :
UHF filters; band-pass filters; dielectric resonator filters; microwave filters; passive filters; tuning; 0.7 dB; 2 GHz; DR filters; chamfers; cross-coupled filters; dielectric resonator filters; frequency tuning; inter-cavity couplings; metal discs; mode coupling; transfer functions; transmission mode filters; triple mode TE/sub 01/spl delta// cubic resonators; Band pass filters; Couplings; Dielectrics; Frequency; Permittivity; Resonator filters; Tellurium; Transfer functions; Tuning;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.1009999
