Microstrip Patch Array Antenna With Reconfigurable Omnidirectional and Directional Patterns Using Bistable Composite Laminates

In this letter, a microstrip patch array antenna with pattern omnidirectional/directional reconfigurability based on bistable composite laminates is proposed. The antenna structure, which is constructed using a bistable glass fiber-reinforced polymer substrate with an antenna layer and a grounding plane, has two stable states (wound-up and extended states). The antenna has omnidirectional and directional radiated patterns in wound-up and extended state, respectively. The bistablility and electromagnetic performance of the antenna are analyzed. The measured results of the prototype provided a proof of concept and evidence of the design feasibility.