Results 31 to 40 of about 1,902,856 (342)
A Metasurface Superstrate for Mutual Coupling Reduction of Large Antenna Arrays
IEEE Access, 2020 In this paper, a $\varepsilon $ -negative metasurface superstrate is proposed for mutual coupling reduction of large antenna arrays. Unlike the previous decoupling metasurface works that are mostly confined to two-ports antennas, the proposed decoupling
Jiazhi Tang +6 more
semanticscholar +1 more source
International Journal of Antennas and Propagation, 2021 Electronically controlled antenna arrays, such as reconfigurable and phased antenna arrays, are essential elements of high-frequency 5G communication hardware.
Stanislav Ogurtsov +2 more
doaj +1 more source
60 GHz compact broadband antenna arrays with wide-angle beam steering
The Journal of Engineering, 2019 Highly integrated multilayered printed circuit board-based patch antenna arrays are proposed in this study for 60 GHz wireless communications. Electromagnetic coupling between two stacked patches is used to achieve
Imran Aziz +6 more
doaj +1 more source
Capacity evaluation of LoS-optimised and standard MIMO antenna arrays at 5.2 GHz [PDF]
, 2007 In this paper, the channel capacity of MIMO communication systems is evaluated from measurements in a home environment at 5.2 GHz. The capacity performance of a novel line-of-sight (LoS)-optimised antenna array architecture is investigated and compared ...
Nix, AR, Sarris, I
core +2 more sources
PROSPECTS FOR THE DEVELOPMENT OF PHASED ANTENNA ARRAYS
Вестник Дагестанского государственного технического университета: Технические науки, 2016 This article describes the main achievements in the development of phased antenna arrays (par) in the past decade. Provides an overview of the most famous systems based on the PAR and PAR based on MMIC technology - PAR in radar stations, PAR to control ...
A. P. Dzuba
doaj +1 more source
Applied Sciences, 2021 For an RF system, a high-gain antenna helps to improve the equivalent isotropic radiated power (EIRP) of the transmitter and an end-fire antenna array helps to improve the directivity (D) and half power beam width (HP) of the antenna.
Yanfei Mao, Shiju E, Chungeng Zhu
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
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
Hybrid Analog and Digital Beamforming for mmWave OFDM Large-Scale Antenna Arrays [PDF]
IEEE Journal on Selected Areas in Communications, 2017 Hybrid analog and digital beamforming is a promising candidate for large-scale millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems because of its ability to significantly reduce the hardware complexity of the conventional fully digital
Foad Sohrabi, Wei Yu
semanticscholar +1 more source
Suppression of Cross-Band Scattering in Multiband Antenna Arrays
IEEE Transactions on Antennas and Propagation, 2019 This paper presents a novel method of suppressing cross-band scattering in dual-band dual-polarized antenna arrays. The method involves introducing chokes into low-band (LB) elements to suppress high-band (HB) scattering currents.
Haihan Sun +4 more
semanticscholar +1 more source