The invention provides a multifunctional C-band dual-polarization phased-array antenna
system, and relates to the technical field of
wireless signals. The
system comprises an
antenna array surface, a digital beam forming module, a monitoring network and a frequency source, wherein the
antenna array surface adopts an upper, lower, left and right separated antenna structure, and the whole antenna
system is composed of four independent sub-antennas; the antenna can generate sum and difference beams in the
azimuth direction and the pitching direction, so that target monopulse tracking can be carried out while meteorological detection is carried out, and the device has the characteristic of multiple functions; a row of
linear array of the antenna is divided into two sections which are symmetrical left and right, the length of a
feeder line between the digital T / R
assembly and the antenna unit is reduced, the
stage number of a power divider is reduced by
one stage, the
feeder line loss is reduced, and the detection capability of the
radar is improved. In addition, a two-stage fitting Taylor weighting method is also adopted to realize the low
side lobe performance of the
azimuth plane, so that the dual polarization consistency of the antenna is good in a
broadband range, and the
side lobe is lower than-35dB.