Codesign of Single-Layer Dual-Polarized Dual Compressed High-Order Modes Differentially Fed Patch Antenna and Solar Cells for Green Communication

Abstract

A codesign dual-polarized patch antenna operating in dual compressed high-order modes and solar cells is proposed for green communication. The solar cell patch antenna is proposed for enhancing gain, wideband communication, and powering for wireless sensors. First, to enhance the gain of the antenna and the ability of optical energy harvesting, the antenna resonates at the high-order compressed modes. Second, the solar cell works in the direct-current loop, and the antenna works in the radio frequency loop separately. A differentially coupling-fed structure and two rows of vias are employed, which are beneficial to bandwidth and prevent the two loops from interfering with each other. Intrinsic isolation is achieved without any extra circuits. Next, a parametric study is exhibited as the antenna optimization guideline. By measuring the prototype experimentally performances, the design approach and the principle are validated. The measured results photoelectric experiment confirmed the ability of the solar cell antenna to convert luminous energy into electrical energy. In the desired operating band (4.8–5 GHz), the radiation performance of the proposed dual-polarized solar cell antenna is higher than 8.6 dBi for 5G communication.