Title :
Small filters based on slotted cylindrical ring resonators
Author :
Mostafavi, R.F. ; Mirshekar-Syahkal, D. ; Lim, Y.C.M.
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
Abstract :
The realization of a small four-pole Chebyshev filter using four matched slotted cylindrical ring (SCR) resonators, is explained. This filter, which does not need tuning screws, is low-cost to manufacture and suitable for mobile communications. The filter has a bandwidth of 75 MHz centered at 1.73 GHz. To obtain the coupling distances between the resonators, a new technique based on the quasi-magneto-static finite-difference method, is also reported.
Keywords :
Chebyshev filters; UHF filters; electromagnetic coupling; finite difference methods; passive filters; resonator filters; 1.72 GHz; Chebyshev filter; coupling analysis; low-cost filter; mobile communications; quasi-magneto-static finite-difference method; slotted cylindrical ring resonators; small four-pole filter; Bandwidth; Chebyshev approximation; Fasteners; Finite difference methods; Manufacturing; Matched filters; Mobile communication; Optical ring resonators; Resonator filters; Thyristors;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967255
