An Improved Complex Signal Based Calibration Method for Beam-Steering Phased Array

Fengchun Zhang, Huaqiang Gao, ZHENGPENG WANG, Wei Fan*

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Abstrakt

Phased array calibration is essential to ensure accurate
array radiation performance. This paper proposes an
improved calibration method based on complex signals in an
anechoic chamber for phased arrays that can only operate
in its default beam-steering mode with limited beam-steering
angular ranges. The basic principle is to convert the array
factors associated with the multi-probe locations into the beamsteering
factors of the array, which can virtually widen the beamsteering
angular range. The broadened angular range can lower
the condition number of the phase setting matrix and therefore
improve the calibration accuracy. Both theoretical derivations
and measurement validation are provided to demonstrate the
effectiveness and enhancement of the proposed method.
OriginalsprogEngelsk
TidsskriftI E E E Antennas and Wireless Propagation Letters
ISSN1536-1225
DOI
StatusUdgivet - 19 aug. 2021

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