Microwave band pass filters play an important function in radio frequency for suppressing
out-of-band emissions that are necessary in today's wireless communication. The study …

In this paper, two simple structures, ie, coupled line and T-shaped microstrip structures, are
used to construct four types of quasi-reflectionless (QR) filters, including single-and two-port …

This paper proposed a two-port reflectionless bandpass filter (BPF) based on the waveguide
implementation, which is required in high power-handling and low-loss applications. The …

Classes of input-reflectionless wideband bandpass filters (BPFs) and balun BPF with quasi-
elliptic-type (QET) responses are reported. They consist of two signal-transmission parts in …

In this article, a new class of tunable filters and diplexers operating in-band is presented.
The proposed circuits are based on an in-line dual-post resonator, which consists of a pair of …

An approach to design quasi-elliptic-type planar filters with single-and dual-band bandpass
transfer functions and input-absorptive capabilities is presented. Two-branch channelized …

In this work, a wideband millimeter-wave (mm-wave) power amplifier (PA) is reported. To
provide excellent input/output impedance matching across broadband, sufficient output …

A class of RF multi-functional input-reflectionless dispersive-delay structure (DDS) with
linear-type in-band group-delay variation and sharp-rejection bandpass-filtering capability is …

This article presents a concise two-port asymmetric reciprocal filtering network, which mainly
consists of short-and open-ended coupled lines for designing reflectionless bandpass filters …

In this article, a uniplanar compact 180° hybrid coupler with fast and accurate wide power
division ratio (PDR) switching ranges and enhanced bandwidth is proposed. The structure …