CAJ | 학술논문

实现了一个适用于短距离无线系统的低功耗ASK中频接收机电路.该接收机包括一个用于补偿信道衰减的自动增益控制环和一个ASK检波器.自动增益控制环中采用了新型的限流跨导器和带前馈的差分峰值检测器,从而以较低的功耗实现了较高的压缩比及较快的响应速度.通过在峰值存储单元中引入零点及在峰值检测电路中引入前馈,实现了对自动增益控制环阻尼特性的调整.ASK检波器中传统的整流器和低通滤波器被整合为更紧凑的结构,从而进一步降低了功耗.仿真结果验证了本文所提技术的有效性.
실현료일개괄용우단거리무선계통적저공모ASK중빈접수궤전로.해접수궤포괄일개용우보상신도쇠감적자동증익공제배화일개ASK검파기.자동증익공제배중채용료신형적한류과도기화대전궤적차분봉치검측기,종이이교저적공모실현료교고적압축비급교쾌적향응속도.통과재봉치존저단원중인입영점급재봉치검측전로중인입전궤,실현료대자동증익공제배조니특성적조정.ASK검파기중전통적정류기화저통려파기피정합위경긴주적결구,종이진일보강저료공모.방진결과험증료본문소제기술적유효성.
We report a low power ASK IF receiver for short-range wireless systems,which includes an AGC loop that compensates the channel attenuation and an ASK detector. A novel current-limited transconductor and feedforward differential peak detector have been designed to maintain a high compression ratio and fast response for the AGC with lower power consumption. A storage unit with a zero and a feed-forward structure have been introduced into the peak detector to control the damping characteristic of the AGC loop. A rectifier and low-pass filter included in the ASK detector have been integrated into a more compact structure to further lower the power consumption. The simulation results show the feasibility of the proposed technique.