Results 81 to 90 of about 14,058 (223)

Design and analysis of quasi‐lumped notch filter with extended upper pass band

Electronics Letters
This paper presents a hybrid technique‐based compact narrow band stop filter design for broadband applications. It provides the rejection of 60 dB at the centre frequency of 2.25 GHz without any stop band harmonics over the required frequency band of ...
Mohit, Satish Jhariya, Shailendra Singh, Raghvendra Kumar Rai   +3 more
doaj   +1 more source

A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2020
In this paper a 2-4 GHz microstrip IFM (Instantaneous Frequency Measurement) subsystem that uses Wilkinson power dividers, frequency discriminators based on band-stop filters and a DC arduino section is reported.
S. R. O de Souza, M. F. A de Souza, L. P. Pontes, M. T. de Melo, Ignacio Llamas-Garro   +4 more
doaj   +1 more source

Wideband and UWB antennas for wireless applications. A comprehensive review [PDF]

, 2017
A comprehensive review concerning the geometry, the manufacturing technologies, the materials, and the numerical techniques, adopted for the analysis and design of wideband and ultrawideband (UWB) antennas for wireless applications, is presented. Planar,
Cicchetti, Renato, Miozzi, Emanuela, Testa, Orlandino   +2 more
core   +3 more sources

Enabling flexible, wearable, and implantable electronics with radio frequency‐based wireless charging: Fundamentals, challenges, and emerging applications

FlexMat, Volume 2, Issue 4, Page 493-509, December 2025.
This paper presents a comprehensive review of radio frequency (RF)‐based wireless charging technologies for flexible electronics. In particular, we (i) provide an overview of wireless charging approaches, (ii) investigate the fundamental RF charging principles, covering rectenna design, impedance matching, RF‐to‐DC conversion, and power management, and
Qu Luo, Wenhui Ji, Yu Yin, Zhensheng Chen, Jing Zhu, Lin Li, Gaojie Chen   +6 more
wiley   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, Volume 13, Issue 33, November 25, 2025.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source

Development of planar filters and diplexers for wireless transceiver front ends [PDF]

, 2010
The central theme of this work is the design of compact microstrip bandpass filters and diplexers and the investigation of applications of these circuits in integrated transceiver RF front-end.
Zayniyev, D., Zayniyev, D.
core  

Peacock Feather Shaped Antenna With Super High Frequency Band for Wireless Applications

Engineering Reports, Volume 7, Issue 11, November 2025.
Proposed Peacock feather‐shaped patch antenna: dimensions, fabricated antenna measurement. ABSTRACT This work presents the design and simulation of a peacock eye‐shaped antenna, developed to address the global bandwidth shortage in wireless cellular networks, particularly in 3G, 4G, and 5G communication systems.
P. Sree Lakshmi, A. Deepak, Suresh Kumar Muthuvel, Ayodeji Olalekan Salau, Aitizaz Ali, Ting Tin Tin   +5 more
wiley   +1 more source

Microstrip loop directional filter

Electronics Letters, 1997
The design and measured results for a microstrip loop directional filter formed by cascading two identical 4-resonator loop filters are presented. The second filter acts as a corrector whose output is added to the output of the first filter thereby minimising passband distortions and resulting in greatly improved performance.
openaire   +1 more source

Efficient Frequency Sweep in RF Devices Simulation: A Combined Approach of Asymptotic Waveform Evaluation and Multigrid Solver

Engineering Reports, Volume 7, Issue 11, November 2025.
A combined AWE‐Multigrid approach accelerates RF frequency sweeping by reducing computation time and resources through asymptotic expansions and multilevel grid resolution, validated by numerical experiments demonstrating superior performance over traditional methods.
Lingzhi Ren, Tao Li, Haili Zhang
wiley   +1 more source

Direct design method for wideband quadruplet and higher‐order bandpass filters with a pair of transmission zeros based on explicit design formulas

IET Microwaves, Antennas & Propagation
This paper presents a direct design approach and explicit design formulas for a wideband quadruplet bandpass filter with a pair of transmission zeros. A filter can be designed based on a filter schematic composed of only transmission lines and a short ...
Juseop Lee, Hyunjong Choi, Jongheun Lee, Minhyup Song   +3 more
doaj   +1 more source