Yanbing Ma, Shangrong Ouyang, Xing Su, Yuhuan Zhang, Hong Wang, Shaojie Huang
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Design of Dual-polarization Slotted Waveguide Antenna for Polarimetric SAR
A dual-polarization phased array antenna for fully polarized SAR is designed in this paper. The antenna adopts slotted waveguide structure, which is composed of horizontal and vertical linear polarization elements. The 3dB beam width of the antenna in azimuth and range direction is 0.9° *0.28° respectively and it has a scanning capability of ±2.3°* ± 23° . In order to reduce the number of TR channels, a large spacing design is adopted in azimuth direction, and the irregular staggered arrangement of sub-arrays is optimized to suppress the resulting scanning grating lobe.
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