Low-power and high-performance 2.4 GHz RF transmitter for biomedical application

Abstract

A high performance and low power 2.4 GHz radio frequency (RF) transmitter for biomedical application is presented. The design utilizes LC voltage control oscillator (VCO), ASK modulator, and an inverse Class-D (D−1) power amplifier (PA). The ASK modulates the carrier signal generated by a low phase noise LC-VCO, then the modulated signal is amplified by the inverse Class-D−1 PA. The proposed RF transmitter achieves −11.14-dBm output power with 3.88% efficiency. It also supports 130-Mb/s data rate and consumes 1.98-mW. The design has been implemented in a 0.13μm CMOS process technology and fully integrated on-chip.