A Compact Dual-Band Rectifier Using Heterofrequency Independent Matching Technology

0 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE microwave and wireless technology letters Pub Date : 2024-09-26 DOI:10.1109/LMWT.2024.3454245

Qinghua Wang;Mei Yang;Qian Chen;Lixia Yang;Yingsong Li;Xiaolin Zhang;Wenquan Che

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Abstract

This work presents a compact dual-band rectifier using heterofrequency independent matching technology (HIMT) to achieve high conversion efficiency for the application of and wireless power transmission (WPT) systems. The dual-band impedance matching network (IMN) is composed of an L-type matching network and a heterofrequency independent matching network (HIMN). Specifically, the L-type matching network is applied for the fundamental single-band matching and HIMN is applied for the other band matching by employing a series half-wavelength transmission line and a short-ended quarter-wavelength transmission line, which behave as a bandpass structure and is completely independent on the fundamental band matching. In this way, the dual-band rectifier can achieve high efficiency in both two bands and compact size with reduced design difficulty. Theoretical analysis of the dual-band rectifier using HIMN is carried out. For demonstration, a prototype of the dual-band rectifier with a compact size of

$17.5 \times 15$

mm2 is fabricated and measured. The measured results show that the maximum conversion efficiency can maintain 72.8% and 69.0% at 2.45 and 5.6 GHz, respectively, with 10.5 dBm input power.

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采用异频独立匹配技术的紧凑型双频整流器

本研究提出了一种采用异频独立匹配技术（HIMT）的紧凑型双频整流器，可实现高转换效率，适用于无线电力传输（WPT）系统。双频阻抗匹配网络（IMN）由 L 型匹配网络和异频独立匹配网络（HIMN）组成。具体来说，L 型匹配网络用于基本单波段匹配，HIMN 用于其他波段匹配，采用串联半波长传输线和短端四分之一波长传输线，作为带通结构，完全独立于基本波段匹配。这样，双波段整流器就能同时实现两个波段的高效率，并且体积小巧，降低了设计难度。本文对使用 HIMN 的双频整流器进行了理论分析。为了进行演示，制作并测量了双频整流器的原型，其尺寸仅为 17.5 × 15 mm2。测量结果表明，在输入功率为 10.5 dBm 的情况下，2.45 和 5.6 GHz 的最大转换效率分别可保持在 72.8% 和 69.0%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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