研究目的
To propose a high-efficiency rectifier with one octave bandwidth using a diode array with a frequency selective topology for wireless power transfer (WPT) or energy harvesting (EH).
研究成果
The proposed rectifier demonstrates high efficiency over a wide frequency range with a simplified circuit structure and reduced insertion loss. The frequency selective topology can be applied to other circuit designs requiring frequency selection of different branches.
研究不足
The study focuses on a specific frequency range (1.4–3.7 GHz) and input power level (10 dBm), which may limit its applicability to other ranges and power levels.
1：Experimental Design and Method Selection:
The rectifier design employs a frequency selective diode array to combine low-and high-band rectifiers without extra matching circuits, leading to a high-efficiency broadband design.
2：Sample Selection and Data Sources:
A prototype rectifier was fabricated and characterized.
3：List of Experimental Equipment and Materials:
The substrate used is Rogers 4350B, and HSMS-286B diodes are utilized.
4：Experimental Procedures and Operational Workflow:
The rectifier's performance was measured using an RF signal generator, bidirectional coupler, power sensor, spectrum analyzer, and digital meter.
5：Data Analysis Methods:
The RF-dc power conversion efficiency (PCE) and reflection coefficient |S11| were measured and analyzed.
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