Integrated CT Sigma-Delta Modulator and LNA with WuRx Antenna for Wireless Tracheostomy Tube

摘要

This article presents the design and experimental results of a continuous-time (CT) sigma-delta (ΣΔ) flexible modulator and low noise amplifier (LNA) with data-weighted average (DWA) technology. An image-reject low noise amplifier is designed for wireless tracheostomy tube and bio-signal acquisitions. An inter-stage T-structure filter is used in the low noise amplifier design to bending antenna. The DWA technique is used for reducing DAC noise due to component mismatches. This proposed wireless sensor setup CO_2 concentration detecting instruments on chip. Oxygen generator will real time to support as sensor monitor and wireless send bio-signal to health center.