Low power signal compensation ic for non-contact body channel communication

Abstract

A first low power non-contact compensation IC for body channel communication (BCC) is proposed. The proposed IC is composed of contact status detection unit (CSDU), non-contact status compensation unit (NCSU), and reconfigurable LNA. CSDU detects contact status of the IC with coupling capacitance sensing. NCSU compensates input signal with LC resonance by using inductor bank and capacitor bank. Reconfigurable LNA controls input impedance of the LNA for adaptive signal compensation. As a result, 5~24 dB signal compensation is achieved with 206.3 $\mu$W power consumption in 65 nm CMOS technology.