Parallel Calibration Method for Phased Array With Harmonic Characteristic Analysis

被引：37

作者：

He, Chong ^{[1
]}

Liang, Xianling ^{[1
]}

Geng, Junping ^{[1
]}

Jin, Ronghong ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2014年 / 62卷 / 10期

关键词：

Array calibration; discrete Fourier transform (DFT); phased array;

D O I：

10.1109/TAP.2014.2341700

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel parallel calibration method for the phased array is proposed and verified. By modulating the phase shifts of the RF channels periodically, their mismatches can be calculated out in parallel by analyzing the harmonic characteristic of the combined calibration signal. There are two main advantages for the proposed method. First, it can be a fast far-field calibration method, which needs no measurement between the calibration source and sink. Second, no auxiliary calibration elements are needed. The calculation amount of the proposed method is mainly the discrete Fourier transform (DFT) at the fundamental and harmonic frequency points. The theory of the proposed calibration method is mathematically deduced. Two numerical simulations are provided to examine its performance. A simple four-channel S-band circuit is constructed and tested to verify its effectiveness.

引用

页码：5029 / 5036

页数：8

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