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Single-Layer Wide-Angle Scanning Linear Phased Arrays Based on Multimode Microstrip Patch Elements.
Dongsheng Li1, Jie Yang2, Jianing Zhao3,4,5
1The 54th Research Institute of China Electronics Group Corporation, Shijiazhuang 050081, China.
Micromachines
|January 26, 2024
Summary
This study presents a novel microstrip patch antenna element for wide-angle scanning in phased array systems. The design achieves a 150° beamwidth by exciting specific modes, enabling efficient beam steering.
Area of Science:
- * Electromagnetics and Antenna Engineering
- * Microwave and RF Engineering
Background:
- * Modern phased array systems require antennas with wide-angle scanning capabilities.
- * Traditional microstrip patch elements often have limited beamwidth, restricting scanning range.
Purpose of the Study:
- * To introduce a novel single-layer microstrip patch element for achieving a wide beamwidth.
- * To enable wide-angle scanning in phased array systems.
- * To validate the design through simulation and experimental evaluation.
Main Methods:
- * Design of a slot-etched circular patch with metallized holes in square rings.
- * Engineering the element to simultaneously excite TM01 and TM21 modes.
- * Constructive interference of excited modes for beam shaping.
- * Manufacturing and testing of two linear phased arrays.
Main Results:
- * Achieved a 3 dB beamwidth of approximately 150° in principal planes.
- * Demonstrated wide-angle scanning capabilities in simulation for E-plane and H-plane.
- * Experimental validation showed effective beam generation from -60° to 60° between 25-28 GHz.
- * Maintained gain loss within 3 dB over the scanning range.
Conclusions:
- * The proposed microstrip patch element effectively achieves a wide beamwidth.
- * The design facilitates cost-effective phased arrays with wide-angle scanning capabilities.
- * This innovation contributes significantly to the advancement of phased array technology.
