Digital Polarization Agile Monopulse DetectorBased on Microstrip Antenna Array withLinearly Polarized Subarrays
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Graphical Abstract
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Abstract
A digital polarization agile monopulse de-
tector was presented. Detection work°ow, method of
virtual polarization synthesizing and method of digital
monopulse angle error extraction based on variable polar-
ization antenna with linearly polarized subarrays were pro-
posed. Polarization agile was realized by utilizing digital
controlled phase shifters in multichannel T/R module. The
gain of antenna array can be improved and the beamwidth
of cross polarization less than ¡15dB can be widened by ap-
propriately increasing the number of subarray. The mea-
sured results show the availability of the detector and the
e®ectiveness of virtual polarization synthesizing and digital
monopulse angle error extraction method.
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