Two-Dimensional Scanning Phased Array Based on Pattern Reconfigurable Antenna

TL;DR

This paper introduces a novel 2D scanning phased array using pattern reconfigurable antennas for Ka band satellite communication, achieving wide scanning angles with low sidelobe levels and gain reduction.

Contribution

It proposes a four-mode pattern reconfigurable element integrated into a 4x4 phased array, enabling extensive 2D scanning with sidelobe suppression.

Findings

Scanning range from -60° to +60° in H-plane

Sidelobe levels 10dB below main beam

Gain reduction less than 3dB

Abstract

This paper presents a novel planar phased array that can work in Ka band designed for two-dimensional scanning. A four-modes pattern reconfigurable element based on microstrip Yagi antenna is proposed, and then developed into the 4X4 phased array, in which two feed points are introduced to reduce sidelobe level (SLL). The simulated results show that our proposed phased array is able to cover the scanning range from -60{\deg} to +60{\deg}in H-plane(yoz-plane) and -47.2{\deg}to +47.2{\deg}in E-plane(xoz-plane) with the gain reduction less than 3dB, both the SLLs of which are 10dB less than main beam. The two-dimensional scanning phased array based on pattern reconfigurable antenna (PRA) presented here is suitable for the satellite communication.