This article presents a wireless power transfer system for an increased dynamic range of link distance and load with extended controllability of transmitting power. Under wide link distance and load variation, rectification and regulation in a single-stage to provide a stable 3-V dc voltage <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$V_\text {L}$</tex-math></inline-formula> from a 13.56-MHz sinusoidal waveform at the receiver (RX) <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$LC$</tex-math></inline-formula> tank is performed. For high end-to-end power transfer efficiency and robust operation under link and load variations, the transmitting power <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$P_\text {TX}$</tex-math></inline-formula> is controlled by the reflected impedance from the RX to the transmitter (TX). To extend the controllability of the <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$P_\text {TX}$</tex-math></inline-formula> , antennae with high quality factors and a series-connected RX <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$LC$</tex-math></inline-formula> tank structure are applied. A working-only-when-needed rising edge detector and a <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Delta \Sigma$</tex-math></inline-formula> -based falling edge detector for low power and accurate zero current detection are presented. A digital <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Delta \Sigma$</tex-math></inline-formula> -based voltage regulation controller is adopted for stable dc supply with fast transient response. The implemented IC in a standard 65-nm CMOS process measures 0.14-mm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^\text{2}$</tex-math></inline-formula> active silicon area. The proposed work operates under a wide range of link distance (30–185 mm) with a large load dynamic range (10000×, 60 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Omega$</tex-math></inline-formula> –600 k <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\Omega$</tex-math></inline-formula> ).