Rectifier array based on efficient power recycling with extended ranges of input power and frequency

Abstract

This article presents a rectifier array for wide ranges of input power and frequency. The rectifier array was configured using two sub‐rectifiers and a 3‐dB branch‐line coupler to recycle the reflected input power through impedance mismatch, thereby extending the input power range. The two‐section branch‐line coupler is merged with matching networks to improve the power conversion efficiency (PCE) and operating bandwidth while maintaining a wide input power range. For demonstration, the proposed rectifier array was designed and fabricated. It achieved a PCE higher than 50% within the input power range of 14–33 dBm. The measured peak PCE remained above 50% within a wide frequency range of 1.5–2.7 GHz.