Microwave Bandpass Filters for Modern Wireless Communications

Abstract

 This article describes planar microwave bandpass filtersfor modern wireless communications. In our study, resonator pattern can be classified into five major patterns as follows: straight-line resonator, stepped-impedance resonator, interdigital resonator, hairpin resonator, and ring resonator. Also, schematic of those patterns has been obviously shown. In addition, interesting filters have been presented in this paper that in particular shows enhanced filter performance including compactness, sharp skirt passband and excellent harmonic suppression.