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 …

High-order input-reflectionless bandpass/bandstop filters and multiplexers

R Gómez-García, JM Muñoz-Ferreras… - IEEE transactions on …, 2019 - ieeexplore.ieee.org
A coupling-matrix approach for the theoretical design of a type of input-reflectionless
RF/microwave bandpass filters (BPFs) and bandstop filters (BSFs) is presented. They are …

Think outside the band: Design and miniaturization of absorptive filters

MA Morgan - IEEE Microwave Magazine, 2018 - ieeexplore.ieee.org
A teaching assistant once told me that, as microwave engineers, impedance matching is"
what we do." We do much more than that, of course. But I think it is true that this is what most …

High-selectivity narrow-and wide-band input-reflectionless bandpass filters with intercoupled dual-behavior resonators

W Feng, X Ma, Y Shi, S Shi… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Two novel classes of high-selectivity input-reflectionless bandpass filters (BPFs) with narrow-
and wide-band characteristics and out-of-band transmission zeros (TZs) are presented …

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 …

Reflectionless filter topologies supporting arbitrary low-pass ladder prototypes

MA Morgan, WM Groves… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Modifications of the authors' previously published, generalized, lumped-element,
reflectionless filter topologies are presented, which remove the original constraints on 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 …

Single-Ended and Balanced Flat-Group-Delay RF Low-Pass Filters With Input-Quasi-Reflectionless Behavior for Digital-Communication Systems

Z Luo, L Yang, T Su, X Zhu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
A class of RF low-pass filters (LPFs) simultaneously featuring flat-in-band-group-delay and
input-quasi-reflectionless characteristics is reported for the first time. By means of a …