Results 31 to 40 of about 178,770 (305)
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
Analysis of a Waveguide-Fed Metasurface Antenna [PDF]
, 2017 The metasurface concept has emerged as an advantageous reconfigurable antenna architecture for beam forming and wavefront shaping, with applications that include satellite and terrestrial communications, radar, imaging, and wireless power transfer.
Bowen, Patrick +4 more
core +2 more sources
MIMO Antenna Array Design with Polynomial Factorization
International Journal of Antennas and Propagation, 2013 One of the main advantages of multiple-input multiple-output (MIMO) antenna is that the degrees-of-freedom can be significantly increased by the concept of virtual antenna array, and thus the MIMO antenna array should be carefully designed to fully ...
Wen-Qin Wang, Huaizong Shao, Jingye Cai
doaj +1 more source
A Broadband Antenna Array Using Full-Wave Dipole
IEEE Access, 2017 This work introduces a bandwidth broadening technique for full-wave dipole (FWD) antennas and arrays, which are realized by introducing gaps in both two arms of the dipole.
Guang-Hua Sun, Sai-Wai Wong, Hang Wong
doaj +1 more source
Embryonics Based Phased Array Antenna Structure With Self-Repair Ability
IEEE Access, 2020 The reliability of phased array antenna can be improved with the self-repairing technology, and the existing self-repair method based on the TR module reconfiguration has problems such as slow calculation speed and difficulty in calculating the elements'
Sai Zhu +4 more
doaj +1 more source
IEEE Access, 2020 In this paper, a dual-band dual-polarized antenna array is presented for 5G base station application. The developed antenna array consists of a 4 × 4 planar MIMO array operating at 3.3-5.0 GHz band (upper band UB) and a single antenna element ...
Yufeng Zhu, Yikai Chen, Shiwen Yang
doaj +1 more source
Practical Noise Model of an Active Electronically Scanning Array
International Journal of Antennas and Propagation, 2023 Active electronically scanning arrays are now widely used in radar and communication systems. The noise characteristics are critical to the system signal-to-noise ratio, thus modeling of the antenna array noise is useful.
Jian Mi, Kan Wang, Zhao Li, Hongbing Sun
doaj +1 more source
Conformal Antenna Array for Millimeter-Wave Communications: Performance Evaluation
, 2015 In this paper, we study the influence of the radius of a cylindrical supporting structure on radiation properties of a conformal millimeter-wave antenna array.
Bisognin, A. +7 more
core +1 more source
Antenna-coupled millimeter-wave LiNbO_3 electro-optic modulator [PDF]
, 1991 The phase-velocity mismatch due to material dispersion in traveling-wave LiNbO_3 optical waveguide modulators may be greatly reduced by breaking the modulation transmission line into short segments and connecting each segment to its own surface antenna.
Bridges, William B. +2 more
core +1 more source
IEEE Access, 2021 This research investigates four switched-beam multi-element circular array antenna schemes operating at 2.4-2.5 GHz for two-dimensional (2D) single-anchor indoor positioning applications.
Rattiya Kawdungta +3 more
doaj +1 more source