Affiliation:
1. School of Electrical Engineering, Chongqing University 1 , Chongqing 400044, China
2. School of Microelectronics and Communication Engineering, Chongqing University 2 , Chongqing 400044, China
Abstract
We propose a multi-feed Huygens’ metasurface (HMS) transmitarray designed for microwave power transmission applications. A near-field distributed optimization mechanism is employed to determine the optimal focal lengths of subarrays. We aim to balance between illumination efficiency and interference from incident waves, leveraging the conjugate field matching method for precise phase compensation. This approach ensures robust radiation performance, notably reducing the focus-to-diameter ratio for large-aperture antenna arrays. Consequently, it mitigates spatial dispersion effects and upholds the operational bandwidth of mega antennas. As a proof of concept, we have designed a single-layer HMS transmitarray measuring 1.14 × 1.14 m2 (22 λ at 5.8 GHz). Through simulation, we have attained a peak gain of 35.47 dB and an aperture efficiency of 57.73%. Our design exhibits outstanding radiation performance, combined with advantages, such as a low profile, cost-effectiveness, and scalability.
Funder
National Natural Science Foundation of China
Chengdu-Chongqing Dual City Economic Circle Construction Technology Innovation Project
Chongqing Technology Innovation and Application Development Project
Civil Aerospace Technology Research Project
Subject
General Physics and Astronomy