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

fYear

2014

fDate

6-11 July 2014

Firstpage

943

Lastpage

944

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6904800

Filename

6904800