Results 41 to 50 of about 136,904 (200)

Wideband Circularly Polarized Magneto-Electric Dipole $1\times2$ Antenna Array for Millimeter-Wave Applications

open access: yesIEEE Access, 2020
A novel wideband circularly polarized (CP) magneto-electric (ME) dipole 1 × 2 antenna array for millimeter-wave applications is presented in this paper.
Ying-Fang Wang   +4 more
doaj   +1 more source

Printed Yagi-Helix antennas

open access: yes, 2022
4 S.This work presents the design and comparison of three different types of printed helix antennas. Using multiple directors, the printed helix antennas radiate in the backfire direction resulting in Yagi-Helix antennas.
Alshrafi, W.   +3 more
core   +1 more source

A Compact Dual-Band Circularly Polarized Antenna with Wide HPBWs for CNSS Applications

open access: yesInternational Journal of Antennas and Propagation, 2018
A compact dual-band circularly polarized antenna with wide half-power beamwidths (HPBWs) for compass navigation satellite system applications is proposed in this paper. The CP radiation is realized by arranging four compact dual-band inverted-F monopoles
Chao Li   +3 more
doaj   +1 more source

A Single-Layer Wideband Differential-Fed Microstrip Patch Antenna With Complementary Split-Ring Resonators Loaded

open access: yesIEEE Access, 2019
In this paper, a single-layer wideband differential-fed microstrip patch antenna (DMPA) with complementary split-ring resonators (CSRRs) loaded is proposed.
Shu Feng   +4 more
doaj   +1 more source

Convolution neural network and 77 ​GHz millimeter wave radar based intelligent liquid classification system

open access: yesJournal of Information and Intelligence, 2023
An intelligent liquid classification system based on 77 ​GHz ​millimeter wave radar and convolution neural network are proposed in this paper. The data are collected by the AWR1843 radar platform and processed by the neural network on the host PC in real-
Jiayu Chen   +6 more
doaj   +1 more source

Single-Layer Sequential Rotation Network in Gap Waveguide for a Wideband Low-Profile Circularly Polarized Array Antenna

open access: yesIEEE Access, 2022
A low-profile circularly-polarized sequential rotation fed $4\times 4$ array antenna working in the Ka-band from 27.5 GHz to 31 GHz is presented. The particularity of the antenna lies in its single-layer sequential rotation feed network implemented in ...
Miguel Ferrando-Rocher   +3 more
doaj   +1 more source

Planar antennas [PDF]

open access: yesIEEE Microwave Magazine, 2006
The development of the broadband antenna for ultrawideband (UWB) applications such as communications, imaging, radar, and localization is discussed. UWB systems are based on transmitting and receiving impulses with extremely wide spectra. As the antennas for UWB should have broad operating bandwidths for impedance matching and high-gain radiation in ...
Cheng, Zhi Ning   +5 more
openaire   +3 more sources

On the sensitivity of the capacity enhancement of a TDMA system with adaptive multibeam antennas [PDF]

open access: yes, 1997
The paper presents results for the likely capacity improvement when an adaptive multibeam antenna is used in conjunction with air interface parameters akin to the DCS1800 system.
Swales, SC, Tsoulos, GV, Beach, MA
core   +1 more source

Antenna Coding Empowered by Pixel Antennas

open access: yesIEEE Transactions on Communications
Pixel antennas, based on discretizing a continuous radiation surface into small elements called pixels, are a flexible reconfigurable antenna technology. By controlling the connections between pixels via switches, the characteristics of pixel antennas can be adjusted to enhance the wireless channel.
Shanpu Shen, Kai-Kit Wong, Ross D. Murch
openaire   +2 more sources

Decoupling of Two Strongly Coupled Dual-Band Antennas With Reactively Loaded Dummy Element Array

open access: yesIEEE Access, 2019
An efficient antenna mutual coupling reduction (decoupling) technique using reactively loaded dummy element array for two dual-band closely coupled MIMO antennas is proposed in this paper.
Xiumei Shen   +6 more
doaj   +1 more source

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