Results 71 to 80 of about 3,456 (311)

Wideband Series-Fed Patch Antenna Array With High Gain and Low Sidelobe: Linearly and Circularly Polarized for 5G V2X Applications

IEEE Open Journal of Antennas and Propagation
This paper presents a single-element linearly polarized (LP) patch antenna characterized by a wide impedance bandwidth and low profile, optimized for 5G V2X applications.
Khaled A. Alblaihed, Abdoalbaset Abohmra, Masood Ur Rehman, Qammer H. Abbasi, Muhammad A. Imran, Lina Mohjazi   +5 more
doaj   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

Advanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood, Mingxuan Li, Vahid Rad, Mehdi Zarei, Chen‐Yu Yeh, Masoud Soroush, Guangyong Li, Paul W. Leu   +7 more
wiley   +1 more source

U-Slot Patch Antenna Principle and Design Methodology Using Characteristic Mode Analysis and Coupled Mode Theory

IEEE Access, 2019
Patch antennas incorporating a U-shaped slot are well-known to have relatively large (about 30%) impedance bandwidths. This work uses characteristic mode analysis (CMA) to explain the impedance behavior of a classic U-slot patch geometry in terms of ...
John J. Borchardt, Tyler C. Lapointe
doaj   +1 more source

Light Switchable Ionic Conductivity of Arylazopyrazole Modified Polysiloxanes

Advanced Materials Technologies, EarlyView.
We present a polysiloxane functionalized with a novel arylazopyrazole dye that undergoes reversible photoisomerization. Upon lithium bis(trifluoromethanesulfonyl)imide addition and UV irradiation, the polymer exhibits a shift in tan(d) toward higher frequencies and enhanced ionic conductivity.
Malte S. Beccard, Thulasinath Raman Venkatesan, Michael Bauer, Valentin Razvan Lupu, Philipp Scheidegger, Francesco Taddei, Frank A. Nüesch, Dorina M. Opris   +7 more
wiley   +1 more source

Gain Enhanced Circularly Polarized Antenna With RCS Reduction Based on Metasurface

IEEE Access, 2018
In this paper, a gain-enhanced circularly polarized (CP) patch antenna with in-band and out-of-band radar cross section (RCS) reduction is designed, fabricated, and analyzed.
Zhaosong Liu, Ying Liu, Shuxi Gong
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Circularly Polarised Stacked Patch Antennas for X‐Band Uplink/Downlink CubeSat Communication Systems

IET Microwaves, Antennas & Propagation
In this article, multiple circularly polarised (CP) stacked patch antenna designs are proposed with different perturbation techniques that can be used in future CubeSat missions using NASA Near Earth Network (NEN) or Deep Space Network (DSN) ground ...
Muhammad Mubasshir Hossain, Syed Salman Kabir, Saeed I. Latif   +2 more
doaj   +1 more source

A WIDEBAND CIRCULARLY POLARIZED SLOT-LOADED DIPOLE ANTENNA WITH L-SHAPED ARMS AND PARASITIC PATCHES [PDF]

, 2017
Wei Hu, Lehu Wen, Zhaoyang Tang, Min Zhang, Wenchao Xiao   +4 more
openalex   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Circular Layout Hybrid Patch CSRR Loaded Antenna for Sub-6GHz n77, n78, n79 Band Applications with Applications-Interference Eliminations [PDF]

E3S Web of Conferences
An antenna for the elimination of in-band application interferences in the sub-6 GHz mid-frequency region is presented. The hybrid patch loaded with a complementary split ring resonator (CSRR) eliminates the in-band interference issue by introducing a ...
Varshney Atul, Kumar Satyam, Dwivedi Raghav, Nurhayati Nurhayati   +3 more
doaj   +1 more source