A Wide-Angle Scanning Phased Array With Microstrip Patch Mode Reconfiguration Technique

作者：Ding, Xiao^*; Cheng, You-Feng; Shao, Wei; Wang, Bing-Zhong

来源：IEEE Transactions on Antennas and Propagation, 2017, 65(9): 4548-4555.

DOI：10.1109/TAP.2017.2722825

• Hybrid particle swarm optimization (PSO)
• mode reconfiguration technique
• phased array
• wide-angle scanning

A method based on the microstrip patch mode and reconfiguration technique is analyzed, studied, and applied to wide-angle scanning phased arrays. First, a summative evaluation of microstrip patch modes available for wide-angle scanning or near endfire has been made. Second, to validate this new method, a multilayer microstrip patch element is established and its resonant modes TM01 and TM20 are excited. Third, a reconfigurable technique is used to reconfigure the above resonant modes and a wide joint 3-dB beam coverage is obtained. Fourth, a prototype of 1 x 4 uniform linear phased array with the above reconfigurable elements is proposed. The prototype operates at 5.8 GHz and its main-beam direction can scan from -75 degrees to + 75 degrees in the elevation plane with a gain fluctuation less than +/- 1 dB. Finally, in order to reduce the sidelobe levels, a hybrid particle swarm optimization algorithm is used to optimize the excitation amplitudes and phases. The measured results show an excellent wide-angle scanning performance, which validates the effectiveness of the proposed method.

• 出版日期2017-9
• 单位电子科技大学