Results 21 to 30 of about 151 (113)

Novel circulator design using substrate integrated coaxial line

Electronics Letters, Volume 59, Issue 15, August 2023., 2023
The contribution of this work is to propose a novel circulator design using the substrate‐integrated coaxial line (SICL) structure. The proposed SICL circulator allows the 3‐D waveguide circulator to be built in a planar form using the printed circuit board (PCB) technology.
Min‐Hua Ho, Jing‐Jie Hong, Chung I. G. Hsu, Wanchu Hong   +3 more
wiley   +1 more source

Combined signal‐interference/split‐type microwave multi‐band bandpass filters

IET Microwaves, Antennas &Propagation, Volume 17, Issue 7, Page 583-593, June 2023., 2023
Two classes of RF/microwave planar quad‐band bandpass filters (BPFs) that simultaneously exploit transversal signal‐interference and multi‐passband‐splitting mechanisms are reported or for experimental–demonstration purposes, two microstrip prototypes are developed and tested. Besides, as a further application, a two‐layer balanced‐circuit version with
Mohamed Malki, Li Yang, Roberto Gómez‐García   +2 more
wiley   +1 more source

Design of a Bandpass Filter with Mixed Electromagnetic Coupling Paths Using Vertical Split‐Ring Resonators

International Journal of Antennas and Propagation, Volume 2023, Issue 1, 2023., 2023
We propose bandpass filters (BPFs) with mixed electromagnetic coupling paths (MEMCPs) that comprise two coupled vertical split‐ring resonators (VSRRs) and present the equivalent circuit models of the coupled VSRRs. We demonstrate that the dominant coupling modes for the top and bottom layers of the VSRRs are magnetic (M) and electric (E), respectively,
Jaehyuk Lim, Hogeun Yoo, Jaehoon Lee, Giuseppe Castaldi   +3 more
wiley   +1 more source

A Miniaturized Low‐Loss Switchable Single‐ and Dual‐Band Bandpass Filter

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2023, Issue 1, 2023., 2023
In this paper, a novel switchable bandpass filter is proposed. By switching p‐i‐n diodes on/off, the proposed filter can be switched between the single‐band bandpass filter and the dual‐band bandpass filter. The filter is mainly composed of eight pairs of series LC resonators, which generate passbands and transmission zeros. Considering the requirement
Ruonan Mu, Yongle Wu, Leidan Pan, Wei Zhao, Weimin Wang, Xiao Ding   +5 more
wiley   +1 more source

Tunable and reconfigurable bandstop filters enabled by optically controlled switching elements

Electronics Letters, Volume 58, Issue 25, Page 985-987, December 2022., 2022
Abstract The authors report a novel approach for designing tunable and reconfigurable bandstop filters by employing bias‐free optically‐controlled photoconductive radio frequency (RF) switching elements. To verify the effectiveness of the approach, a bandstop filter with two stopbands centred at 4.05 and 4.75 GHz was designed using a split‐ring‐coupled
Peizhao Li, Yu Shi, Yijing Deng, Patrick Fay, Lei Liu   +4 more
wiley   +1 more source

A variable bandwidth memristor‐based Legendre Optimum low pass filter for radio frequency applications

Engineering Reports, Volume 4, Issue 11, November 2022., 2022
This article presents the enhancement of Legendre Optimum LPF in terms of reusability and bandwidth, based on the programmable memristance of memristors. Results show a bandwidth enhancement of up to 540 at 600 kHz, and up to 100 at 110 MHz. A reusable, cost‐effective, variable bandwidth filter is achieved from the original fixed bandwidth filter ...
Elochukwu Onyejegbu, Zhazira Zhumabay, Arjuna Marzuki, Ikechi Augustine Ukaegbu   +3 more
wiley   +1 more source

A highly selective tri‐band bandpass‐to‐bandstop filter with the third band independently tunable

Engineering Reports, Volume 4, Issue 3, March 2022., 2022
In this article, a tri‐band BP‐to‐BS filter with the third band tunable and the other ones fixed using the crossed resonator is proposed, analyzed and demonstrated. Combined with the proposed coupling structure, the M and Qe can be met to form the tri‐band. The PIN diode is applied as a switch to alter BP‐to‐BS characteristic. Loading varactor diode at
Hong Yang, Dewei Zhang, Junjie Zhang, Xian Wang, Dalong Lv, Yi Zhang, Dongfang Zhou   +6 more
wiley   +1 more source

On-Chip Millimeter-Wave Integrated Absorptive Bandstop Filter in (Bi)-CMOS Technology [PDF]

, 2022
A millimeter-wave passive-integrated bandstop filter (BSF) with absorptive/reflectionless behavior is reported. It avoids the creation of RF-power reflections for filtered signals which can deteriorate earlier active stages in integrated RF front-end ...
Chen, L, Yang, L, Gomez-Garcia, R, Zhu, X, Ge, Z   +4 more
core   +1 more source

Compact Quadband Bandstop Filter Based on Concentric Split Ring Resonators with Perturbation for Multifunctional Wireless Systems

International Journal of Antennas and Propagation, Volume 2022, Issue 1, 2022., 2022
Bandstop filters play an essential role in many radio frequency (RF) and microwave communication systems to block undesired signals or reject spurious harmonics. This paper presents the design and experiment of a compact quadband bandstop filter centered at 1.2/1.97/2.96/4.78 GHz with a passband insertion loss ranging from 1.07 to 2.9 dB.
Pierre Moukala Mpele, Chien-Jen Wang
wiley   +1 more source

Ultra wideband bandstop plasmonic filter in the NIR region based on stub resonators [PDF]

, 2023
In this study, we propose an ultra-wideband bandstop filter (UWB-BSF) using a plasmonic MIM waveguide coupled with a stub cavity that is investigated using finite-difference time-domain (FDTD).
Bensalah, Hocine, Hocini, Abdesselam, Harhouz, Ahlam, Khedrouche, Djamel, Lahoubi, Mahieddine, Zegaar, Imane   +5 more
core   +1 more source