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Collaborative Optimization Method for Wideband Transistor-Based Rectifiers With a Large Input Power Dynamic Range
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DOI：10.1109/TCSI.2025.3626535.png)
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Abstract
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This paper presents a collaborative optimization method for the design of wideband transistor-based rectifiers with a large input power dynamic range, targeting high-power energy harvesting and wireless power transfer applications. The core of the proposed method is to establish the relationship between the rectification efficiency, the continuous mode parameter, and the input power range at several representative frequencies of the continuous class-B/J mode, from which the target load impedance range under different frequencies and power levels is obtained. With the target impedance identified, an Ivy algorithm (IVYA)-driven intelligent optimization framework is then employed to enable the automated design and optimization of subsequent circuit topologies. To verify the proposed method, a wideband transistor-based rectifier operating from 2.2 to 2.6 GHz is designed, fabricated, and measured. The prototype achieves a peak efficiency of 63.5%–76.3% within the operating band, and maintains above 50% efficiency at a 17 dB input power back-off level, demonstrating the effectiveness and applicability of the proposed collaborative optimization method in the design of high-performance rectifiers.
Keywords:
High-power energy harvesting
Ivy algorithm
large input power range
transistor-based rectifier
wideband
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