Breathing analog to digital converter of modulator for wireless sensor and communication applications

Abstract

A dual-mode low pass sigma-delta (ΣΔ) modulator at clock rates respectively with cascaded integrators is presented for wireless sensor and communication applications. One of key features is that cascaded integrators with feedback as well as distributed input coupling (CIFB) topology erase a summation amplifier and reduce consumption by wake up receiver. In near feature is that only one set loop filter is designed by switching capacitors to achieve a dual-mode function and greatly optimized layout placement. The multi-charging proposal has built in near-infrared laser-driven (NIRLD) might be a promising wireless electrical power source. The proposed breathing analog to digital converter of modulator senses CO2 concentration detecting instruments on chipset. Oxygen generator will fast to support when sensor monitor and wireless send bio-signal to health cloud and big data.