Dynamic range enhancement of RF rectifiers through adaptive power distribution employing an extended resonance network

This paper presents an extended resonance power divider to increase the dynamic range of RF rectifiers. Such a power divider distributes the RF input power among several different rectifier cells adaptively based on the input power level. Therefore, high rectification efficiency can be maintained over a very wide dynamic range. As a proof of concept, a two-way dynamic enhancement rectifier network has been designed, which exhibits a rectification efficiency greater than 50% within a dynamic range of 35 dB (from -15 dBm to 20 dBm).