In this paper, synthesis and design techniques of dual-and triple-passband filters with
Chebyshev and quasi-elliptic symmetric frequency responses are proposed and …

In this paper, a class of triple-band bandpass filters with two transmission poles in each
passband is proposed using three pairs of degenerate modes in a ring resonator. In order to …

This article presents a new generalized direct synthesis method to design multiband
bandpass filters (MBPFs). Based on the proposed frequency transformation technique, it can …

A novel approach for designing tri-band bandpass filters with independently controllable
center frequencies and improved stopband rejection characteristic is presented in this …

This letter presents a compact planar tri-band bandpass filter with high selectivity. The
proposed filter employs two sets of resonators, ie, stub-loaded resonators and half …

A new design method for tri-band filters with improved band allocation is proposed. The
design concept treats different band allocations with different methodologies. For the bands …

A novel approach to design dual-band as well as a triple-band BPF with improved isolation
is ventured in this paper. In dual-band filter, dual mode property of coupled line filters is …

In this paper, we present a tri-band filter design using tri-mode T-shaped branches
connected by λ/4 transmission lines. By analyzing the input admittance of a T-shape branch …

It has been over a decade since stepped-impedance resonators (SIRs) first carved a niche
in applications for multiband bandpass filter (BPF) design. This was the first class of …

A novel type of multi-bandpass filters is proposed. The idea of the proposed filters is to
engineer the transmission band using multi-reject band resonators, which are implemented …