Simulation Design of Pattern Reconfigurable Yagi-Uda Antenna Using Bistable Composite Laminates

In this paper, a pattern reconfigurable Yagi-Uda antenna based on bistable structural materials is designed. The antenna comprises a director, a driven dipole, a reflector and a substrate. By applying composite laminates as the substrate that holds two stable configurations with opposite curvations, the pattern reconfiguration performance can be realized, where the direction of maximum radiation differs between two states by 114°. This antenna operates at 2.4 GHz with a relative bandwidth of 10%, a gain of 7.49 dB and a front-to-back ratio of 8.2 dB. This design can be applied to aircraft control systems.