A least mean squares approach of iterative array calibration for scalable digital phased array radar panels

Yeary, Mark; Conway, David; Herd, J.; Fosberry, Mark; Harger, M.; Hondl, Kurt

doi:10.1109/array.2013.6731841

Cited by 3 publications

(1 citation statement)

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“…Moreover, due to component aging and temperature variation, the realistic antenna element excitations inevitably differ from their expected values in practice. These errors would cause array pattern distortion, gain degradation, worse SLL, and null drifts [20][21][22][23]. Therefore, knowledge about the impacts of the excitation errors and the corresponding calibration methods are of high importance for phased array antennas.…”

Section: Introductionmentioning

confidence: 99%

Impact Analysis and Calibration Methods of Excitation Errors for Phased Array Antennas

Gao

Zhang

2021

IEEE Access

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Phased array antennas have played a very important role in many different areas and applications. It requires precise excitation of each antenna element by various synthesis techniques to obtain desired array pattern features. However, due to reasons such as manufacturing imperfections, component aging, and temperature variation, the realistic antenna element excitation inevitably differs from their expected values in practice. This paper presents a tutorial-like review to deal with excitation errors for phased array antennas. Two kinds of analysis methods, probabilistic methods and interval arithmetic (IA) based methods, are presented to evaluate the effects of excitation errors for phased array antennas. State-ofthe-art calibration methods along with various signal processing techniques are reviewed, their advantages and challenges are discussed in a comparative manner. Some other common errors and open research directions are also presented.INDEX TERMS Phased array antenna, excitation error, interval arithmetic, array calibration.

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Section: Introductionmentioning

confidence: 99%