Dual ultra-wideband high-efficiency rectenna for RF energy harvesting from UMTS and UNII bands

IF 1.2 4区工程技术 Q4 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE Analog Integrated Circuits and Signal Processing Pub Date : 2025-01-22 DOI:10.1007/s10470-025-02332-0

Shailendra Singh Ojha, P. K. Singhal, Vandana Vikas Thakare

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Abstract

A dual-band ultra-wideband rectenna is being designed to work from 1.8 GHz to 2.7 GHz with a bandwidth of 900 MHz, and 3.4 GHz to 7.5 GHz with a bandwidth of 4.1 GHz. The projected antenna can operate over the lower, medium, and upper frequency bands of the Unlicensed National Information Infrastructure (UNII), as well as the frequency band utilized by the Universal Mobile Telecommunication System (UTMS) at 2100 MHz. The antenna used operates within the specified frequency bands and has an octagonal shape. A defective ground structure is incorporated into an octagonal-shaped antenna to enable its operation within the prescribed frequency ranges. The antenna gains for UTMS-2100 MHz and UNII band are 3 decibels isotropic (dBi) and 5.5 dBi, respectively. The rectifier consists of two branches, and the DC combining technique is chosen to achieve enhanced conversion efficiency (CE). The CE, evaluated at an input power level (IPL) of 0 dBm and a frequency of 2.1 GHz, is 52%. At a frequency of 5.8 GHz, the conversion efficiency is 35%. Nevertheless, the recorded conversion efficiency stands at 85% when operating at a frequency of 2.1 GHz, with an input power level (IPL) of 15 dBm. The highest recorded conversion efficiency at a frequency of 5.8 GHz is 80%, achieved with an IPL of 15 dBm. The optimum value for the load resistor is 330 Ω.

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用于UMTS和UNII频段射频能量收集的双超宽带高效整流天线

一种双频超宽带整流天线正在设计中，其工作范围为1.8 GHz至2.7 GHz，带宽为900 MHz， 3.4 GHz至7.5 GHz，带宽为4.1 GHz。投影天线可以在无牌国家信息基础设施（UNII）的下、中、上频段以及通用移动通信系统（UTMS）使用的2100兆赫频段上工作。所使用的天线在指定的频带内工作，并具有八角形。将有缺陷的接地结构并入八角形天线中，以使其在规定的频率范围内工作。UTMS-2100 MHz和UNII频段的天线增益分别为3分贝和5.5分贝。整流器由两个支路组成，采用直流组合技术提高了转换效率。在输入功率电平（IPL）为0 dBm、频率为2.1 GHz时，CE为52%。在5.8 GHz频率下，转换效率为35%。然而，当工作频率为2.1 GHz，输入功率电平（IPL）为15 dBm时，记录的转换效率为85%。在5.8 GHz频率下记录的最高转换效率为80%，IPL为15 dBm。负载电阻的最佳值为330 Ω。

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来源期刊

Analog Integrated Circuits and Signal Processing 工程技术-工程：电子与电气

CiteScore

0.30

自引率

7.10%

发文量

141

审稿时长

7.3 months

期刊介绍： Analog Integrated Circuits and Signal Processing is an archival peer reviewed journal dedicated to the design and application of analog, radio frequency (RF), and mixed signal integrated circuits (ICs) as well as signal processing circuits and systems. It features both new research results and tutorial views and reflects the large volume of cutting-edge research activity in the worldwide field today. A partial list of topics includes analog and mixed signal interface circuits and systems; analog and RFIC design; data converters; active-RC, switched-capacitor, and continuous-time integrated filters; mixed analog/digital VLSI systems; wireless radio transceivers; clock and data recovery circuits; and high speed optoelectronic circuits and systems.