Efficient and Compact Tri-Band Rectifier With Large Frequency Ratio for WPT

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Microwave and Wireless Components Letters Pub Date : 2022-11-01 DOI:10.1109/LMWC.2022.3182059

Zhen Yue, Xin Xu, Shun Li, Yu Zhu, X. Lin

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引用次数: 4

Abstract

In this letter, an efficient and compact tri-band rectifier with large frequency ratio is proposed, which adopts a novel low-cost direct current (dc)-pass filter structure in the design. Three large frequency ratio rectifiers are combined together by using diode arrays with a frequency-selective topology without additional impedance matching networks. The dc-pass filter is composed of microstrip line structures cascaded low-cost lumped components, which can effectively suppress the high-order harmonics at high- and low-frequency points while reducing the circuit size and costs of large frequency ratio. For validation, the proposed rectifier working at 0.915, 2.45, and 5.8 GHz is fabricated with the dimensions of 29.5 mm $\times21.3$ mm. The measured results show that the RF-dc power conversion efficiency (PCE) reaches 72.6%, 71.8%, and 73.5% at 0.915, 2.45, and 5.8 GHz, respectively, when the input power is 19 dBm. Compared with traditional multiband rectifiers, the proposed topology exhibits merits of compact size, high efficiency, and large frequency ratio.

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用于WPT的高效紧凑的大频率比三频整流器

本文提出了一种高效紧凑的大频率比三带整流器，该整流器在设计中采用了一种新颖的低成本直流通滤波器结构。三个大频率比整流器通过使用具有频率选择拓扑的二极管阵列组合在一起，而不需要额外的阻抗匹配网络。该直流通滤波器由微带线结构级联低成本集总元件组成，可以有效抑制高、低频点的高次谐波，同时减小了大频率比的电路尺寸和成本。为验证所提出的整流器工作频率为0.915、2.45和5.8 GHz，尺寸为29.5 mm × 21.3 mm。测量结果表明，当输入功率为19 dBm时，在0.915、2.45和5.8 GHz时，RF-dc功率转换效率(PCE)分别达到72.6%、71.8%和73.5%。与传统的多带整流器相比，该拓扑结构具有体积小、效率高、频率比大等优点。

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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来源期刊

IEEE Microwave and Wireless Components Letters 工程技术-工程：电子与电气

自引率

13.30%

发文量

376

审稿时长

3.0 months

期刊介绍： The IEEE Microwave and Wireless Components Letters (MWCL) publishes four-page papers (3 pages of text + up to 1 page of references) that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, medical and industrial activities. Microwave theory and techniques relates to electromagnetic waves in the frequency range of a few MHz and a THz; other spectral regions and wave types are included within the scope of the MWCL whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.