Results 31 to 40 of about 179,358 (305)
Design of a novel high gain dual-band common-aperture array antenna
Dianzi Jishu Yingyong, 2019 This paper presents a new ultra-wideband(UWB) high-gain dual-band common-aperture array antenna. The antenna consists of four T-shaped dual-polarized antennas, a 6×6 waveguide slot array antenna, and a circular metal substrate. The dual-polarized antenna
Qiao Xuguang +5 more
doaj +1 more source
Transformation from a Single Antenna to a Series Array Using Push/Pull Origami
Sensors, 2017 We propose a push/pull origami antenna, transformable between a single antenna element and a three-element array. In limited space, the proposed origami antenna can work as a single antenna.
Syed Imran Hussain Shah, Sungjoon Lim
doaj +1 more source
SATCOM Earth Station Arrays Anti-Jamming Based on MVDR Algorithm
Applied Sciences, 2023 In modern life, a large amount of information is transmitted through satellites. The anti-jamming ability of satellite communication earth stations is the basis for ensuring the smooth flow of information.
Yanpeng Xi, Jian Liu, Wenhao Zhao
doaj +1 more source
Atacama compact array antennas [PDF]
SPIE Proceedings, 2012 We report major performance test results of the Atacama Compact Array (ACA) 7-m and 12-m antennas of ALMA (Atacama Large Millimeter/submillimeter Array). The four major performances of the ACA antennas are all-sky pointing (to be not more than 2.0 arcsec), offset pointing (to be < 0.6 arcsec) surface accuracy (< 25(20) micrometer for 12(7)m ...
Saito, Masao +10 more
openaire +2 more sources
Research on Spaceborne Multi-Beam Phased Array Fed Refl ector Antenna
天地一体化信息网络, 2022 Spaceborne multi-beam antenna is one of the main means to meet the needs of high-capacity and high-speed satellite communication services, and is widely used in various satellite communication systems.Various forms of antennas, such as spaceborne phased ...
Tao YANG, Lei LI, Yongqing ZOU
doaj +2 more sources
A Large Aperture UWB Antenna Array for Real Beam Radar Imaging
International Journal of Antennas and Propagation, 2012 The development of four-element ultra-wideband (UWB) comb taper slot antenna array with 18 cm element spacing for real beam radar imaging is described. The four-element UWB array system with optimum element spacing is analyzed by energy pattern.
Chao-Hsiang Liao, Dau-Chyrh Chang
doaj +1 more source
3D printed lattice structure for lightweight Ka‐band phased array antenna
Electronics Letters, 2021 Here a lightweight antenna array is designed and fabricated for a Ka‐band phased array antenna. From the perspective of advanced space‐borne engineering practice, a Kagome lattice structure is proposed for the lightweight antenna array applications and ...
Peng Lyu +5 more
doaj +1 more source
Study of Horizontally Polarized Omnidirectional Microstrip Antenna Arrays [PDF]
Radioengineering, 2017 This paper presents two microstrip antenna arrays for horizontally polarized (HP) omnidirectional application, namely rectangular patch antenna array and H-shaped patch antenna array.
K. Wei, J. Y. Li, L. Wang, R. Xu
doaj
Kernel Antenna Array Processing [PDF]
IEEE Transactions on Antennas and Propagation, 2007 We introduce two support vector machine (SVM)-based approaches for solving antenna problems such as beamforming, sidelobe suppression, and maximization of the signal-to-noise ratio. A basic introduction to SVM optimization is provided and a complex nonlinear SVM formulation developed to handle antenna array processing in space and time.
Martínez Ramón, Manel +3 more
openaire +3 more sources
Ain Shams Engineering Journal, 2021 In this paper, the antenna array appropriate topologies and configurations are investigated to reduce the impact of large gain variation between array elements that is produced due to the mutual coupling.
Amany M. Saleh +3 more
doaj +1 more source