Results 281 to 290 of about 673,683 (345)

A Low-RCS and Wideband Circularly Polarized Array Antenna Co-Designed With a High-Performance AMC-FSS Radome

IEEE Antennas and Wireless Propagation Letters, 2022
In this letter, we investigate a low radar cross-section (RCS) wideband circularly polarized microstrip array antenna co-designed with a high-performance artificial magnetic conductor and frequency selective surface (AMC-FSS) radome.
Zhiyu Xing, Feng Yang, Peng Yang, Jianhua Yang   +3 more
semanticscholar   +1 more source

Wearable Electromagnetic Head Imaging System Using Flexible Wideband Antenna Array Based on Polymer Technology for Brain Stroke Diagnosis

IEEE Transactions on Biomedical Circuits and Systems, 2019
Given the increased interest in a fast, portable, and on-spot medical diagnostic tool that enables early diagnosis for patients with brain stroke, a new approach of a wearable electromagnetic head imaging system based on the polymer material is proposed.
A. Alqadami, K. Bialkowski, A. Mobashsher, A. Abbosh   +3 more
semanticscholar   +1 more source

Wideband semielliptical monopole antenna

2011 - MILCOM 2011 Military Communications Conference, 2011
A printed semi-elliptical monopole fed by a grounded coplanar waveguide is investigated as a low-profile, light-weight, wideband radiator. Two methods of improving the impedance match at higher frequencies without increasing the occupied volume are reported.
Rajesh C. Paryani, Rod B. Waterhouse
openaire   +1 more source

Ultra-wideband sources and antennas

Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 2002
Ultra-Wideband (UWB) sources and antennas are of interest for a variety of potential applications that range from transient radar systems to communications systems. In this paper, we discuss the research issues and progress being made in gas, oil and solid state switching, UWB sources, and antennas.
William D. Prather, Forrest J. Agee, Carl E. Baum, Jane M. Lehr, James P. O’Loughlin, Jeffrey W. Burger, Jon S. H. Schoenberg, David W. Scholfield, Robert J. Torres, Jonathan P. Hull, John A. Gaudet   +10 more
openaire   +1 more source

Radar Cross Section Reduction of Wideband Vivaldi Antenna Arrays with Array-Level Scattering Cancellation

IEEE Transactions on Antennas and Propagation, 2022
Wideband phased antenna arrays always contribute large radar cross section (RCS) to low-observed platforms. Low-scattering wideband phased antenna arrays are thus highly demanded.
Yuewen Gou, Yikai Chen, Shiwen Yang
semanticscholar   +1 more source

Body-coupled, wideband antennas

2015 IEEE Biomedical Circuits and Systems Conference (BioCAS), 2015
In this paper we present antenna solutions for maximizing microwave energy release into the human body. Reflections from the body surface are avoided by coupling the antennas to the body using low-loss ceramic composites. Both 3D and 2D antenna topologies are explored for transcutaneous radar measurements.
Kristian Gjertsen Kjelgård, Mats Høvin, Tor Sverre Lande   +2 more
openaire   +1 more source

Wideband Four-Port MIMO antenna array with high isolation for future wireless systems

, 2021
A four-port MIMO antenna array with wideband and high isolation characteristics for imminent wireless systems functioning in 5G New Radio (NR) sub-6 GHz n77/n78/n79 and 5 GHz WLAN bands is proposed.
J. Kulkarni, Arpan H. Desai, C. Sim
semanticscholar   +1 more source

Wideband Integrated Quad-Element MIMO Antennas Based on Complementary Antenna Pairs for 5G Smartphones

IEEE Transactions on Antennas and Propagation, 2021
In this article, a wideband and highly-integrated quad-element multiple-input multiple-output (MIMO) antenna is proposed for the first time, to adapt to the size-limited environment in fifth-generation (5G) smartphones.
Libin Sun, Yue Li, Zhijun Zhang
semanticscholar   +1 more source

Compact wideband patch antenna and its MIMO configuration for 28 GHz applications

, 2021
This article presents a printed antenna owing the advantages of compact size and simple geometrical configuration for fifth-generation (5G) 28 GHz communication systems.
Niamat Hussain, W. A. Awan, W. Ali, S. Naqvi, A. Zaidi, T. T. Le   +5 more
semanticscholar   +1 more source

Wideband Gain Enhancement of an AMC Cavity-Backed Dual-Polarized Antenna

IEEE Transactions on Vehicular Technology, 2021
A novel low-profile wideband antenna is proposed with high-gain, high-isolated, and dual-polarized properties. It consists of two mutually-orthogonal bowtie-shaped dipole radiators, four rectangular parasitic elements, and a cylindrical artificial ...
Shuhui Yang, Longfei Liang, Wensong Wang, Zhongyuan Fang, Yuanjin Zheng   +4 more
semanticscholar   +1 more source