Affiliation:
1. Key Laboratory of Microwave and Optical Wave Application Technology Guilin University of Electronic Technology Guilin China
2. The National Key Laboratory of Science and Technology on Space Microwave Xi' an China
3. School of Electronic Science and Engineering, Institute of Electromagnetics and Acoustics Xiamen University Xiamen China
4. School of Electronic Information and Electrical Engineering Chengdu University Chengdu China
Abstract
AbstractAn all‐dielectric lens antenna (LA), with flat‐top radiation patterns in both E‐ and H‐planes, is proposed. The antenna covers the 64–70 GHz band. The dielectric LA consists of a source horn (LB‐12‐15‐A with WR12) and a dielectric lens. The lens is composed of multiple layers of dielectric rings with different heights. The structural parameters of the dielectric lens are optimized by a hybrid optimization algorithm (particle swarm optimization [PSO]‐genetic algorithm [GA]) that involves genetic operations of GA and PSO. The hybrid algorithm is beneficial to enhance the optimization efficiency, and an objective function is designed to optimize the beam width, the S11, and the sidelobe level (SLL). Both the simulated and measured results show that the dielectric LA provides good flat‐top radiation patterns within the desired band. Moreover, the dielectric lens is manufactured by three‐dimensional‐printed technology, which allows for low cost, easy manufacturing, and lightweight.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials