A review on microwave band pass filters: Materials and design optimization techniques for wireless communication systems

N Krishna, KG Padmasine - Materials Science in Semiconductor …, 2023 - Elsevier
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 …

High-order dual-port quasi-absorptive microstrip coupled-line bandpass filters

X Wu, Y Li, X Liu - IEEE Transactions on Microwave Theory and …, 2019 - ieeexplore.ieee.org
In this article, we present the first demonstration of distributed and symmetrical all-band
quasi-absorptive filters that can be designed to arbitrarily high orders. The proposed quasi …

Avoiding RF isolators: Reflectionless microwave bandpass filtering components for advanced RF front ends

R Gómez-García, D Psychogiou… - IEEE Microwave …, 2020 - ieeexplore.ieee.org
RF/microwave bandpass filters (BPFs) are fundamental components in high-frequency RF
transceivers. On the transmitter side, they limit the transmitted RF signal bandwidth by …

Frequency-tunable constant-absolute-bandwidth single-/dual-passband filters and diplexers with all-port-reflectionless behavior

M Fan, K Song, L Yang… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
An approach to design RF all-port-reflectionless quasi-elliptic-type single-/dual-band
bandpass filters (BPFs) and diplexers with frequency-adaptive constant-absolute-bandwidth …

Quasi-reflectionless filters using simple coupled line and T-shaped microstrip structures

KD Xu, S Lu, YJ Guo, Q Chen - IEEE journal of radio frequency …, 2021 - ieeexplore.ieee.org
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 …

Transmission-line bandpass filter structures with infinite reflectionless range

J Lee, J Lee - IEEE Transactions on Circuits and Systems I …, 2022 - ieeexplore.ieee.org
This article is to present a complete method to design transmission-line reflectionless filters.
Our approach can be used to accord a transmission-line filter to feature an infinite frequency …

Multilayered input-reflectionless quasi-elliptic-type wideband bandpass filtering devices on diplexer-based structures

L Yang, R Gómez-García, M Fan… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
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 …

Flat-group-delay RF planar filters with transmission zeros using transversal circuits

R Gómez-García, L Yang, M Malki… - … on Circuits and …, 2023 - ieeexplore.ieee.org
Various families of flat-in-band-group-delay RF planar bandpass filters (BPFs) with multiple
out-of-band transmission zeros (TZs) in their filtering transfer function are presented. As the …

Rigorous design method for symmetric reflectionless filters with arbitrary prescribed transmission response

J Lee, B Lee, S Nam, J Lee - IEEE Transactions on Microwave …, 2020 - ieeexplore.ieee.org
In this article, we present a novel generic reflectionless filter topology that can produce an
arbitrary predefined transmission response while having the perfect impedance matching at …

Frequency-and bandwidth-tunable absorptive bandpass filter

SW Jeong, TH Lee, J Lee - IEEE Transactions on Microwave …, 2019 - ieeexplore.ieee.org
In this paper, an analytic design method for a frequency-and bandwidth-tunable absorptive
bandpass filter is introduced. The presented design method relies on the transformation from …