Title :
A computer aided accurate adjustment of cellular radio RF filters
Author :
Ishizaki, T. ; Ikeda, H. ; Uwano, T. ; Hatanaka, M. ; Miyake, H.
Author_Institution :
Matsushita Electr. Ind. Co. Ltd., Osaka, Japan
Abstract :
An accurate and speedy tuning algorithm for cellular radio filters based on performance simulation of circuit network and optimization process is presented. From the measured performance of an untuned sample, the amount of adjustment to be tuned is calculated. The experimental results for a five-resonator filter show the great advantage of this method, which reduces the tuning time from several hours to 5 min. A reference table of the relation between a trimming amount and a frequency change prepared in the program would reduce the computation time even more.<>
Keywords :
cellular radio; circuit CAD; dielectric resonators; digital simulation; optimisation; passive filters; radiofrequency filters; tuning; cellular radio RF filters; cellular radio filters; computation time; computer aided accurate adjustment; computerised tuning; experimental results; five-resonator filter; frequency change; optimization process; performance simulation of circuit network; trimming amount; tuning algorithm; tuning time; Circuit optimization; Computer errors; Dielectrics; Equivalent circuits; Land mobile radio cellular systems; Radio frequency; Resonance; Resonant frequency; Resonator filters; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1990., IEEE MTT-S International
Conference_Location :
Dallas, TX
DOI :
10.1109/MWSYM.1990.99542
