A Broadband Rectifier With Wide Incident Angle of Incoming Waves Based on Quadrature Coupler for RF Energy Harvesting

IF 2.9 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Microwave and Wireless Components Letters Pub Date : 2022-12-01 DOI:10.1109/LMWC.2022.3192835

Jian Liu, M. Zhang, Shuangqi Cai, Jia Chen

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引用次数: 1

Abstract

In this letter, a broadband rectifier with a wide-incident-angle (WIA) property is proposed. The circuit is composed of a broadband quadrature coupler (BQC) and two broadband subrectifiers (RectA and RectB). Here, RectA and RectB are connected to the two output ports of the BQC and combined by a direct current (dc) power combiner. Then, the obtained dc power is transmitted to the load resistor. Besides, two RF sources (RF1 and RF2) with identical input power and a phase difference (

$\Delta \varphi$

) are connected to the input and isolated ports of the BQC. A detailed theoretical analysis is carried out. To validate the proposed scheme, we design a broadband (1.6–2.8 GHz) WIA rectifier. Measurement results show that the power conversion efficiency (PCE) exceeded 60% in the frequency range from 1.6 to 2.8 GHz at 13.1 dBm of the input power. Additionally, at 2.45 GHz, the PCE varies in the range of 60.8% and 72.6% within the entire

$\Delta \varphi $

range (0°–360°). Thus, the obtained PCE variation (

$\Delta \eta$

) is 11.8%. Considering its excellent broadband and WIA features, it is very suitable for high-efficiency radio-frequency (RF) energy harvesting (RFEH) systems.

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基于正交耦合器的宽入射角宽带射频能量采集整流器

本文提出了一种具有宽入射角特性的宽带整流器。该电路由一个宽带正交耦合器(BQC)和两个宽带减整流器(RectA和RectB)组成。在这里，RectA和RectB连接到BQC的两个输出端口，并通过直流(dc)电源组合器组合。然后，得到的直流功率被传输到负载电阻。另外，两个输入功率相同、相位差($\Delta \varphi$)的射频源(RF1和RF2)分别连接在BQC的输入和隔离端口上。并进行了详细的理论分析。为了验证所提出的方案，我们设计了一个宽带(1.6-2.8 GHz) WIA整流器。测量结果表明，功率转换效率(PCE)超过60% in the frequency range from 1.6 to 2.8 GHz at 13.1 dBm of the input power. Additionally, at 2.45 GHz, the PCE varies in the range of 60.8% and 72.6% within the entire $\Delta \varphi $ range (0°–360°). Thus, the obtained PCE variation ( $\Delta \eta$ ) is 11.8%. Considering its excellent broadband and WIA features, it is very suitable for high-efficiency radio-frequency (RF) energy harvesting (RFEH) systems.

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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.