AMC-integrated reconfigurable beamforming folded dipole antenna with parasitic and RF MEMS

• Main Authors: Herwansyah, Lago, Mohd Faizal, Jamlos, Soh, Ping J., Vandenbosch, Guy A. E.
• Format: Article
• Language: English
• Published: EMW Publishing 2016
• Subjects: QC Physics; TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://umpir.ump.edu.my/id/eprint/29483/1/AMC-integrated%20reconfigurable%20beamforming%20folded%20dipole.pdf; http://umpir.ump.edu.my/id/eprint/29483/; https://doi.org/10.2528/PIERC16082403; https://doi.org/10.2528/PIERC16082403

A beam-reconfigurable printed antenna on an Artificial Magnetic Conductor (AMC) is proposed for navigation and radiolocation applications at a frequency of 9.41 GHz. The AMC is formed based on a periodic Jerusalem cross shaped slot structure and is located in between two substrate layers, close to the radiator. The AMC plane has a bandwidth of 1.95 GHz around the targeted frequency of 9.41 GHz. By integrating micro-electro-mechanical system (MEMS) switches on the folded patches in combination with parasitic elements, a beam steering capability of up to ±58° is achieved with a rear full ground plane. This eliminates the need for a mechanical steering system, which is traditional in the applications targeted. The antenna achieves a high gain of 8.08 dB and 90% efficiency. A good agreement between simulated and measured results is obtained.