This paper introduces a novel high-sensitivity 5-stage RF-DC converter utilizing an innovative solution in combining gate-biasing with body-biasing compensation techniques, based on standard 180 nm CMOS technology, designed for biomedical low-power energy harvesting applications. This dual compensation approach allows for improved threshold voltage control and reduced power losses, setting this design apart from conventional RF-DC converters. Simulation results demonstrate that the converter achieves high sensitivity, delivering a 1V DC output at an input power of -30 dBm with a 100M Omega load. The converter operates at a frequency of 434 MHz input antenna and exhibits a peak power conversion efficiency of 22% at a 1M Omega load. Additionally, the converter achieves a peak voltage conversion gain of 14 dB at 100M Omega.