IEEE 2000 Ultrasonics Symposium Proceeding, pp.79-82, paper PQ-5 DESIGN OF NARROW-BAND TRANSVERSELY COUPLED AND BALANCED BRIDGE RESONATOR FILTERS USING EQUIVALENT CIRCUIT AND P-MATRIX MODELS

This paper reports on two methods of designing narrow-band resonator filters: the modified equivalent circuit model for transversely coupled resonator filters and modified P-matrix model for balanced bridge resonator filters. To raise the accuracy of simulation on the basis of both the models, we use the experimental parameters obtained for the two-resonator structure of the filter being designed or for individual resonators of the filter. The experimental data and theoretical predictions agree well for the yxl/33.3 o quartz filters with central frequency 86.8 MHz and band width 56 kHz.