Title :
Small filters based on slotted cylindrical-ring resonators
Author :
Mostafavi, Reza F ; Mirshekar-Syahkal, Dariush ; Lim, Y C Mark
Author_Institution :
Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK
fDate :
12/1/2001 12:00:00 AM
Abstract :
The realization of a small four-pole Chebyshev filter, using four matched slotted cylindrical-ring resonators, is explained. This filter, which does not need screws for tuning the resonators or couplings, is low-cost to manufacture and is suitable for mobile communications. The filter has a bandwidth of 75 MHz, centered at 1.73 GHz. To obtain the resonant frequency and Q-factor of the resonators as well as the coupling distances between the resonators, a new technique, the quasi-magneto-static finite-difference method, is used, which is also reported
Keywords :
Chebyshev filters; Q-factor; finite element analysis; resonator filters; 1.73 GHz; 75 MHz; Q-factor; bandwidth; coupling distance; four-pole Chebyshev filter; mobile communication; quasi-magnetostatic finite difference method; resonant frequency; slotted cylindrical-ring resonator; Bandwidth; Chebyshev approximation; Fasteners; Manufacturing; Matched filters; Mobile communication; Q factor; Resonant frequency; Resonator filters; Tuning;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
