A wide‐band antenna with dual open rings resonator for RF energy harvesting. Issue 11 (18th June 2022)

• Record Type: Journal Article
• Authors: Zeng, Miaowang; Li, Zihong; Ding, Yanyu; Lin, Xianjing
• Is Part Of: Microwave and optical technology letters. Volume 64:Issue 11(2022)
• Page Start: 2019
• Page End: 2023
• Publication Date: 2022-06-18
• Subjects: antenna -- dual open rings resonator -- RF energy harvesting -- wide band; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.33383
• Languages: English
• ISSNs: 0895-2477

Abstract

Abstract: In this letter, a wide‐band antenna with dual open rings resonator (DORR) is presented for ambient radio frequency (RF) energy harvesting applications. The proposed antenna is designed to harvest RF energy at DCS1800, UMTS/LTE, and Wi‐Fi bands (1.7–2.65 GHz). The DORR produces a strong coupling effect and leads to more current paths, thus contributing to a wider bandwidth. The measured bandwidth is from 1.68 to 2.80 GHz with 50% fractional bandwidth. The measured gains are 3.5, 5, and 5 dBi at 1.83 GHz (DCS1800), 2 GHz (UMTS/LTE), and 2.45 GHz (Wi‐Fi), respectively. Moreover, over 90% radiation efficiency and larger than 3 dBi gain are achieved for the operating bands. The antenna can be used for RF energy harvesting and various communication applications.