Diode based reconfigurable microwave filters for cognitive radio applications: A review

H Islam, S Das, T Bose, T Ali - IEEE Access, 2020‏ - ieeexplore.ieee.org
The cognitive radio paradigm for develo** next-century wireless communication systems
is rapidly entering the mainstream, and various aspects of it are currently being applied in …

Novel dual-band EBG structure to reduce mutual coupling of air gap based MIMO antenna for 5G application

KSL Parvathi, SR Gupta - AEU-International Journal of Electronics and …, 2021‏ - Elsevier
A novel variable band gap center frequency and dual band gap stacked electromagnetic
band gap (VBS-EBG) structure for multiple input multiple output (MIMO) antenna system …

Two decades of UWB filter technology: Advances and emerging challenges in the design of UWB bandpass filters

PP Shome, T Khan, SK Koul… - IEEE Microwave …, 2021‏ - ieeexplore.ieee.org
The past two decades have witnessed an unprecedented growth in the study and
implementation of different short-range wireless services. However, the deployment of …

Compact UWB half-mode SIW bandpass filter with fully reconfigurable single and dual notched bands

Q Li, T Yang - IEEE Transactions on Microwave Theory and …, 2020‏ - ieeexplore.ieee.org
Compact ultra-wideband (UWB) bandpass filters based on the half-mode substrate
integrated waveguide (SIW) with fully reconfigurable single and dual notched bands are …

Miniaturised UWB antenna with dual‐band rejection of WLAN/WiMAX using slitted EBG structure

M Ghahremani, C Ghobadi, J Nourinia… - IET Microwaves …, 2019‏ - Wiley Online Library
This study presents a new slitted electromagnetic bandgap (EBG) structure to filter
undesired wireless local area network (WLAN) and worldwide interoperability for microwave …

Bandpass filter with tunable/switchable in-band interference rejection

MA Khater, P Adhikari, M Thorsell… - IEEE Microwave and …, 2021‏ - ieeexplore.ieee.org
This letter presents a wideband bandpass filter (BPF) with a tunable and switchable in-band
notch. This allows the RF front end to pass the signal of interest uninterrupted in the absence …

Superconducting ultra-wideband (UWB) bandpass filter design based on quintuple/quadruple/triple-mode resonator

X Lu, B Wei, Z Xu, B Cao, X Guo… - IEEE Transactions …, 2015‏ - ieeexplore.ieee.org
This paper analyzes the coupling modes when multiple hairpin resonators are coupled.
Three kinds of current distribution and direction states exist in the coupled hairpin …

Design of notched-wideband bandpass filters with reconfigurable bandwidth based on terminated cross-shaped resonators

XK Bi, X Zhang, SW Wong, SH Guo, T Yuan - IEEE Access, 2020‏ - ieeexplore.ieee.org
In this paper, a series of novel reconfigurable-bandwidth notched-wideband bandpass filters
(NWB BPFs) with controllable notch bands are proposed. The proposed filters start from a …

Band‐notched UWB antenna with switchable and tunable performance

W Wu, YB Li, RY Wu, CB Shi… - International Journal of …, 2016‏ - Wiley Online Library
A band‐notched UWB antenna is presented, which can switch between two notch bands
and tune the central frequency simultaneously. It is the first time that the switchable and …

Bandwidth enhancement of microstrip patch antenna using complementary rhombus resonator

L Tao, J Xu, H Li, Y Hao, S Huang… - … and Mobile Computing, 2018‏ - Wiley Online Library
By using complementary rhombus resonator (CRR), a small‐size and low‐profile microstrip
patch antenna (MPA) with broad bandwidth has been proposed. Parametric studies were …