Zobrazeno 1 - 10
of 971
pro vyhledávání: '"Zaiping Nie"'
Publikováno v:
IEEE Access, Vol 6, Pp 66557-66564 (2018)
With the growing of base station antenna number in massive multiple-input-multiple-output (MIMO), the complexity and the cost of the system rise rapidly. Fortunately, the antenna selection is an effective way to solve the problem, which can capture m
Externí odkaz:
https://doaj.org/article/5934fd22ebc7445f88ef4bf1e7c0267d
Autor:
Min Meng, Zaiping Nie
Publikováno v:
IEEE Access, Vol 6, Pp 77606-77614 (2018)
We comprehensively study the characteristic-mode analysis (CMA) of arbitrarily shaped 3-D conducting objects embedded in a lossless planarly layered medium. The electric field integral equation (EFIE) with the layered medium Green's function is appli
Externí odkaz:
https://doaj.org/article/597e132a46944c07bfb4ef7035be2440
Publikováno v:
IEEE Access, Vol 6, Pp 38348-38355 (2018)
Owing to its advantage in fast calculation, ray-tracing technique has been widely applied in solving electromagnetic scattering of electrically large target. In order to save computational time in ray tracing, KD-tree structure is introduced to reduc
Externí odkaz:
https://doaj.org/article/5042d81ccc3c427094e5915543b66669
Publikováno v:
IEEE Access, Vol 6, Pp 73434-73443 (2018)
A wideband antenna with quad-polarization reconfigurable operation is proposed. It consists of a crossed tri-port feed linearly polarized (LP) radiation structure and a switchable feed network. A dual-port LP element with wideband characteristic and
Externí odkaz:
https://doaj.org/article/28600b02c9764a458997979753cb8ff5
Publikováno v:
Remote Sensing, Vol 12, Iss 5, p 788 (2020)
With the increase of sea surface wind speed, whitecaps will appear on the sea surface. Generally, for Electromagnetic (EM) scattering of the foam-covered sea surface, medium-scale waves are used to replace the breaking waves of the real sea surface.
Externí odkaz:
https://doaj.org/article/5f4fa134893a4130994310bd73ca74a1
Autor:
Lianning Song, Zaiping Nie
Publikováno v:
International Journal of Antennas and Propagation, Vol 2017 (2017)
This work presents a novel matrix compression algorithm to improve the computational efficiency of the nested complex source beam (NCSB) method. The algorithm is based on the application of the truncated singular value decomposition (TSVD) to the mul
Externí odkaz:
https://doaj.org/article/e4bf1da3f1f64648a6e255abe062a1da
Publikováno v:
International Journal of Antennas and Propagation, Vol 2017 (2017)
The computation of the augmented electric field integral equation (A-EFIE) is accelerated by using the multilevel complex source beam (MLCSB) method. As an effective solution of the low-frequency problem, A-EFIE includes both current and charge as un
Externí odkaz:
https://doaj.org/article/4ec2f4a0be50477db08837261bf23623
Publikováno v:
Sensors, Vol 18, Iss 8, p 2701 (2018)
A broadband dual-polarized base station antenna with special designed feeding structures is investigated in this paper. The proposed antenna contains two pairs of crossed dipoles, two specially designed feeding connectors, two pieces of dielectric pa
Externí odkaz:
https://doaj.org/article/35160b4961e543ce9b4b25b19477579d
Publikováno v:
International Journal of Antennas and Propagation, Vol 2015 (2015)
In this paper we propose a high performance parallel strategy/technique to implement the fast direct solver based on hierarchical matrices method. Our goal is to directly solve electromagnetic integral equations involving electric-large and geometric
Externí odkaz:
https://doaj.org/article/ddb735e50eb94766ae8bf5b0945b3bfb
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
Traditional monopulse systems used for direction finding usually face the contradiction between high angle precision and wide angle-searching field, and a compromise has to be made. In this paper, the time modulation technique in four-dimensional (4D
Externí odkaz:
https://doaj.org/article/06431e60395c497faf508110ffcc9693