Title :
A study on the near field OAM using the rigorous numerical methods
Author :
Lingfang He ; Haogang Wang ; Xianmin Zhang ; Xiaofeng Jin ; Huan Yu
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
In this paper, we investigate the near field Orbital Angular Momentum (OAM) using the rigorous numerical methods. To model the communication channel of the OAM system, we derived a rigorous channel matrix for the near field transmitter/receiver system. This channel matrix is composed of the admittance matrices of the system. To obtain these admittance matrices, the integral equation method is employed. We also use Multilevel Green´s Function Interpolation Method (MLGFIM) in accelerating the matrix-vector multiplications while solving the integral equations iteratively. Comparing with the far field channel matrix used in conventional communications that omits the feedback effects, the near field channel matrix rigorously takes into account the multiple coupling between the transmitter and the receiver.
Keywords :
Green´s function methods; interpolation; iterative methods; matrix multiplication; MLGFIM; admittance matrices; integral equation method; matrix-vector multiplications; multilevel Green´s function interpolation method; near field OAM; near field orbital angular momentum; rigorous channel matrix; rigorous numerical methods; Admittance; Antennas; Equations; Integral equations; Mathematical model; Receivers; Transmitters; Channel Matrix; Multi-Level Green´s Function Interpolation Method; Near Field; Orbital Angular Momentum;
Conference_Titel :
Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-4355-5
DOI :
10.1109/APCAP.2014.6992631