Bin Li, Yike Qiu, Jin-ping Zhang, Zhipeng Zhou, Lei Sun
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W-band Series-fed Microstrip Patch Array with Optimization of Tapering Profile
A W-band series-fed microstrip patch array based on an optimization of tapering profile is proposed in the article. The proposed array is composed of 16 series-fed radiating patches. Dimensions of these microstrip patches are optimized to generate an array pattern with low sidelobes. The optimization procedure about the patch width tapering is performed by using the differential evolution (DE) algorithm. The post-optimized model is investigated in a three-dimensional full-wave simulator. Simulation results show that the sidelobe level of the series-fed array is below -23.8 dB. In addition, the voltage standing wave ratio (VSWR) in the operation frequency range 92 ~ 98 GHz is below 1.65.
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