Results 31 to 40 of about 6,806 (266)

A single‐layer high‐gain dipole antenna array with a bidirectional radiation pattern based on parallel‐strip line

IET Microwaves, Antennas & Propagation, 2021
A single‐layer dipole antenna array with quasi‐Yagi configuration has been proposed and demonstrated, which provides a dual radiation pattern with the same sense.
Zhe Wu, Yu Yun, Zhuang Miao, Håkan Lennerstad   +3 more
doaj   +1 more source

Effects of Split Position on the Performance of a Compact Broadband Printed Dipole Antenna with Split-Ring Resonators [PDF]

Journal of the Korean Institute of Electromagnetic Engineering and Science, 2019
This paper presents the effects of the position of the split of a split-ring resonator (SRR) on the performance of a composite broadband printed dipole antenna.
Kam Eucharist Kedze, Heesu Wang, Ikmo Park   +2 more
doaj   +1 more source

Design of a Cylindrical Crossed Dipole Phased Array Antenna for Weather Surveillance Radars

IEEE Open Journal of Antennas and Propagation, 2021
We present a cylindrical dual-polarization phased array antenna for weather surveillance radars that features high isolation, matched copolar beams, low sidelobe levels, and adaptive null steering.
Mohammad-Hossein Golbon-Haghighi, Mirhamed Mirmozafari, Hadi Saeidi-Manesh, Guifu Zhang   +3 more
doaj   +1 more source

Microstrip Folded Dipole Antenna for 35 GHz MMW Communication

International Journal of Antennas and Propagation, 2013
A microstrip asymmetric folded dipole antenna on chip is proposed in this paper. The construction of balun feed line is adopted to provide wideband.
Guang Hua, Chen Yang, Ping Lu, Hou-Xing Zhou, Wei Hong   +4 more
doaj   +1 more source

Numerical Study of the Near-Field and Far-Field Properties of Active Open Cylindrical Coated Nanoparticle Antennas

IEEE Photonics Journal, 2011
A very electrically small, active open cylindrical coated nanoparticle model is constructed, and its electromagnetic properties are investigated in the visible frequency band.
Junping Geng, Richard W. Ziolkowski, Ronghong Jin, Xianling Liang   +3 more
doaj   +1 more source

Evaluation of 8-Channel Radiative Antenna Arrays for Human Head Imaging at 10.5 Tesla

Sensors, 2021
For human head magnetic resonance imaging at 10.5 tesla (T), we built an 8-channel transceiver dipole antenna array and evaluated the influence of coaxial feed cables.
Myung Kyun Woo, Lance DelaBarre, Matt Thomas Waks, Young Woo Park, Russell Luke Lagore, Steve Jungst, Yigitcan Eryaman, Se-Hong Oh, Kamil Ugurbil, Gregor Adriany   +9 more
doaj   +1 more source

Unidirectional dipole antenna

Electronics Letters, 1972
A new small unidirectional wire antenna, useful for an indoor television receiving antenna, has been developed for use in the v.h.f. band. This antenna consists of two closely spaced dipoles. This letter describes the principle involved and introduces the equations for input impedance and gain.
Y. Mikuni, K. Nagai
openaire   +1 more source

DIPOLE ANTENNAS WITH A SECTOR-SHAPED RADIATION PATTERN [PDF]

Radio Physics and Radio Astronomy
Subject and Purpose. The directivity characteristics of a dipole antenna when it is placed above and parallel to a perfectly conducting screen of rectangular shape are considered, aiming to theoretically study dipole antennas with sector-shaped radiation
M. M. Gorobets, N. P. Yeliseyeva, S. L. Berdnyk, O. M. Horobets   +3 more
doaj   +1 more source

Gain Characteristic Maintained, Miniaturized LPDA Antenna Using Partially Applied Folded Planar Helix Dipoles

IEEE Access, 2018
The miniaturization of a compact planar log-periodic dipole array (LPDA) antenna usually comes with a side effect of the gain deterioration phenomenon.
Geonyeong Shin, Myeongjun Kong, Su-Hyeon Lee, Sang-Tae Kim, Ick-Jae Yoon   +4 more
doaj   +1 more source

Analysis and Simulation of a Sequential Rotationally Excited Circular Polarized Multi-Dipole Array for a Bi-Static Antenna GPR for Deep Exploration

Remote Sensing, 2023
As an effective active remote sensing technology for the exploration of shallow underground targets, ground-penetrating radar (GPR) is a detection method that can be used to obtain information about the characteristics of underground targets by ...
Haifeng Fan, Yiming Zhang, Qianqian Tian, Xuhong Wang, Hongyan Meng   +4 more
doaj   +1 more source