Wide Band Spurious Suppression of Multi-Strip Resonator BPF —Comprehensive Way to Suppress Spurious Responses in BPFs—

Abstract

A new comprehensive method to suppress the spurious modes in a BPF is proposed taking the multi-strip resonator BPF as an example. It consists of disturbing the resonant frequency, coupling coefficient and external Q of the higher-order modes at the same time. The designed example has shown an extraordinarily good out-of-band response in the computer simulation.