Patent ID: 9374061
Filing Date: 2016-06-21
CPC Classification: G06F,H03H

Claim Text:
1. A method of designing a band-pass filter, comprising: establishing a baseline filter design meeting first design criteria, the baseline filter design including a plurality of series surface acoustic wave resonators and a plurality of shunt surface acoustic wave resonators, each surface acoustic wave resonator having a respective resonant frequency; calculating a performance metric related to an input impedance of the baseline filter design over a pass band; establishing one or more alternate filter designs, each of the one or more alternative filter designs derived from the baseline filter design by reordering the resonant frequencies of two or more of the plurality of series surface acoustic wave resonators and/or two or more of the plurality of shunt surface acoustic wave resonators; calculating a respective performance metric related to an input impedance of each of the one or more alternative filter design over the pass band; and selecting a final filter design from among the baseline filter design and the one or more alternate filter designs based on the respective performance metrics.