This paper presents the analysis and design of a three stage reconfigurable RF-DC rectifier optimized for enhanced performance across a broad dynamic range. The proposed rectifier employs a modified version of a complementary cross-coupled rectifier using floating resistor-based body biasing that improves the rectifier sensitivity and the conversion efficiency. The rectifier dynamically changes the number of stages according to the RF signal power, using a comparator circuit. Post-layout simulations demonstrate a peak efficiency of 67% and a dynamic range (for PCE > 40%) across a wide input power range from -18.5 dBm to 7.7 dBm. The results underscore the rectifier's potential for significant improvements in both efficiency and dynamic range, offering a promising solution for modern RF energy conversion requirements. The proposed architecture is implemented in 65 nm RFCMOS technology at 2.40 GHz.