Title :
Simple impedance matrix characterization method for uniform circular antenna arrays
Author :
Junhe Zhou ; Jian Zhang ; Hui Wang ; Xuefeng Yin ; Meisong Tong ; Jian Li
Author_Institution :
Dept. of Electron. Sci. & Eng., Tongji Univ., Shanghai, China
Abstract :
In this work, a simple method to determine the impedance matrix of a uniform circular antenna array (UCA) is proposed. The impedance matrix of a UCA is a circulant matrix and its eigen vectors are the row vectors of the inverse discrete Fourier transform (IDFT) matrix. Therefore, by setting the external excitation voltage vector to be its eigen vector, the corresponding voltages on the antennas will be the eigen vector as well. Therefore, by monitoring the excitation voltage and the antenna voltage of one antenna element, one is able to obtain the impedance matrix of the UCA.
Keywords :
antenna arrays; discrete Fourier transforms; impedance matrix; UCA; circulant matrix; eigen vectors; excitation voltage monitoring; impedance matrix characterization method; inverse discrete Fourier transform matrix; uniform circular antenna arrays; Antenna arrays; Antenna measurements; Impedance; Matrix decomposition; Vectors; Voltage measurement;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904800
