PRINTED-CIRCUIT FILTERS FOR WIRELESS DUAL- AND TRIPLE-BAND APPLICATIONS

摘要

Simple dual- and triple-band printed-circuit filters for wireless applications are presented. By using a single dual-behavior resonator for each individual band, two transmission zeros between passbands are obtained, thus providing high levels of rejection. Moreover, there is no limit on the ratio of highest to lowest passband. Several measured prototype performances show very good agreement with computations.