Quad-Band Multilayer Siw Filter With High Selectivity and Controllable Bandwidths

Abstract

This work presents an approach for the design of a quad-band substrate integrated waveguide (SIW) bandpass filter based on multilayer process. TE 101 /TE 102 /TE 103 /TE 104 modes are used to characterize the four passbands, respectively. Firstly, the locations and band ratios of the passbands are chosen based on the effective width-length of the SIW resonator and its ratio. Then, vertical couplings of the modes and source-load are designed on the middle metal layers between the dielectric layers, which provides a relatively independent bandwidth tuning and high selectivity. To demonstrate the proposed design method, a quad-band SIW bandpass filter is fabricated and measured. Experimental results agree well with the simulated counterpart. The proposed quad-band SIW filter presents good selectivity and compact size.

Compact Sicc Dual-Band and Uwb Filters Using Multimode Technology

“…The ever-accelerated modern multi-standard communication system requires advanced microwave components, especially filters to have high-performance and compact-size [1]. Recently, multi-mode filters have received significant research attention for their attractive characteristics such as few resonating elements, good passband selectivity and advanced asymmetrical elliptic or quasi-elliptic response [2].…”