A low power receiver is designed and implemented for 2.4 GHz Industrial-Scientific-Medical (ISM) band in a 40 nm CMOS process. To obtain good noise and linearity performance at low cost, a current-reused low power inductor-less balun low noise amplifier (LNA) structure is proposed without use of monolithic spiral inductors or transformers. The receiver adopts a zero-IF architecture and current mode mixing operation which avoid need of large voltage headroom for the radio frequency (RF) voltage swing under strong interferers. A third order active-RC low pass filter (LPF) with RC calibration and DC offset cancelation (DCOC) blocks are carefully designed. Current reusing technique and timing optimized asynchronous SAR logic are adopted in LNA and ADC design respectively, featuring high-power efficiency. The total receiver chain achieves maximum conversion gain of 80.32 dB, noise figure (NF) of 6.27 dB and input referred third-order intercept point (IIP3) of −0.6 dBm with 32.8 mW power consumption.

低功耗接收器是为40 GHz CMOS工艺中的2.4 GHz工科医学（ISM）频段设计和实现的。为了以低成本获得良好的噪声和线性性能，提出了一种不使用单片螺旋电感器或变压器的，可重复使用电流的低功率无电感巴伦低噪声放大器（LNA）结构。接收器采用零中频架构和电流模式混合操作，避免了在强干扰源下射频（RF）电压摆幅需要较大的电压裕量。精心设计了具有RC校准和DC偏移消除（DCOC）模块的三阶有源RC低通滤波器（LPF）。LNA和ADC设计分别采用电流重用技术和时序优化的异步SAR逻辑，具有高功率效率。