Results 51 to 60 of about 436,887 (206)

Wideband Circularly Polarized Filtering Hybrid Antenna

Applied Sciences, 2022
In this paper, a wideband circularly polarized (CP) filtering hybrid antenna is presented. The liquid dielectric resonator (DR) is excited by a microstrip-coupled cross-slot to generate CP radiation. Four inverted L-shaped strips are loaded on the ground
Yahui Qian, Shumin Xie
doaj   +1 more source

Substrate-Integrated Folded Waveguide Slot Antenna [PDF]

, 2005
In recent years a number of researchers have proposed novel techniques for fabricating rectangular waveguide using microwave integrated circuit techniques.
Sanz-Izquierdo, Benito, Langley, Richard J., Young, Paul R., Batchelor, John C., Grigoropoulos, N.   +4 more
core   +1 more source

A Scalable Platform for Massively Parallel Superconducting Single‐Photon Detection

Laser &Photonics Reviews, EarlyView.
One hundred independent superconducting nanowire detectors, each with efficiency up to 80.1–98.3%, are integrated into a single compact system operating below 2.1 K. This parallel architecture supports fully connected multi‐user quantum entanglement distribution, while its scalability opens new avenues in optical quantum computing, QKD networks ...
You Xiao, Zhen Wan, Dianpeng Wang, Jianjian Zhu, Huiqin Yu, Shuna Wang, Zhiyun Shu, Chaomeng Ding, Hongxin Xu, Jia Huang, Jiamin Xiong, Xiaoyu Liu, Lingyun Li, Lixing You, Hao Li   +14 more
wiley   +1 more source

From Biological Fractal Dynamics to Analog Fractional‐Order Circuits: A System Design Framework Based on Operatorization Thought

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Fractional calculus, with its unique advantage in describing memory and nonlocal effects, has become a key tool for modeling nonlinear dynamic systems. Its integration with circuit systems has opened up a new paradigm for modern circuit design.
Zhimo Jian, Zheng Li, Gang Peng, Chaoqian Luo, Yajun Yin   +4 more
wiley   +1 more source

Design and implementation of EHF band miniaturized receiver

Dianzi Jishu Yingyong
In response to the increasing demand for higher operating frequencies of satellite communication, a receiver operating in Extremely High Frequency (EHF) band which realized RF receive and down-conversion function is designed.
Xu Xinian
doaj   +1 more source

An adaptive microstrip patch antenna for use in portable transceivers [PDF]

, 1996
This paper describes an adaptive frequency tunable microstrip patch antenna. The introduction of an adaptive feedback loop enables the patch antenna to optimise the antenna-feed impedance match.
Railton, CJ, Rostbakken, O, Hilton, GS
core   +1 more source

Enhanced Transmit Efficiency of a Loop Array Combined With Out‐of‐Phase Passive Dipoles for Thoracic Spinal Cord MRI at 7T

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2539-2552, November 2026.
ABSTRACT Purpose The design of radiofrequency (RF) coils tailored for the target anatomy is necessary to overcome the transmit field homogeneity and penetration issues at Ultra‐High‐Field (UHF). For the spinal cord, the optimal design has not yet been determined. This work intends to demonstrate the added value of a pair of passive dipoles placed under
Hugo Amat, Marc Dubois, Aurelien Destruel, Sajad Hosseinnezhadian, Djamel Berrahou, Charles Betemps, Amira Trabelsi, David Bendahan, Stefan Enoch, Virginie Callot, Redha Abdeddaim   +10 more
wiley   +1 more source

A Wideband Circularly Polarized Microstrip Patch Antenna With Embedded Shielding Package Based on Quarter-Mode Substrate Integrated Waveguide Feed

IEEE Access, 2020
In this paper, the feasibility of using the half-mode/quarter-mode of a substrate integrated waveguide (HMSIW/QMSIW) cavity to feed microstrip patch antennas (MPAs) is explored; based on this, a circularly polarized (CP) MPA fed by the sequential ...
Kai Sun, Yue Tang, Sihao Liu, Jin Pan, Deqiang Yang   +4 more
doaj   +1 more source

Textile Metamaterials: Design, Fabrication, and Emerging Applications

Applied Research, Volume 5, Issue 5, October 2026.
Textile metamaterials combine sub‐wavelength electromagnetic structures with textile architectures, enabling flexible and wearable platforms for wave manipulation. This review highlights their evolution, fabrication strategies, electromagnetic characteristics, and emerging applications, while identifying key challenges and opportunities for next ...
Samanta M. de Holanda, Arthur M. da Silva, Thiago F. Santos, Dieter Rahmadiawan, Francisco D. M. Nobre, Jose Heriberto Oliveira do Nascimento, Idalmir de Souza Queiroz Júnior, Antonio Sergio Bezerra Sombra, Humberto D. de Andrade   +8 more
wiley   +1 more source

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