Abstract
A wideband-generalized pattern multiplication approach to evaluate
the performance of an optical beamforming-based wideband antenna array is
proposed and experimentally demonstrated, which enables the far-field
measurement of a large wideband array with a small anechoic chamber.
Because the optimum reception of a wideband microwave signal is highly
related to the time-domain distortions of the beamforming system, a
correlation-receiver-based radiation pattern is applied to take the
fidelity of the wideband signals into account. A four-element optical
beamforming system is built to verify the feasibility of the proposed
method. The results achieved by the proposed method agree well with the
conventional direct measurements.
© 2016 Chinese Laser Press
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