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首页> 外文期刊>Chinese Journal of Electronics >A Low-Power Low-Cost 780MHz CMOS FSK Receiver for Short-Range Wireless Communication
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A Low-Power Low-Cost 780MHz CMOS FSK Receiver for Short-Range Wireless Communication

机译：用于短距离无线通信的低功耗低成本780MHz CMOS FSK接收器

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摘要

This paper presents a low-power low-cost 780MHz CMOS Frequency shift keying (FSK) receiver for short-range wireless communication. A current-reused Low power amplifier (LNA) and a single-balance passive mixer are employed to cut down the current consumption of the RF frontend in receiver. A 3rd-order active-RC complex filter with reconfigurable bandwidth is implemented and a novel automatic tuning circuit is used in the filter to eliminate the negative effect of the Process, voltage, temperature (PVT) variations. A novel replica-circuit master-slave automatic tuning circuit and a discrete-time differentiator are employed in demodulator to keep the demodulation performances from the PVT variations and the frequency offset of Intermediate frequency (IF). The receiver is fabricated in 0.18μm CMOS and occupies a chip area of about 0.97mm2. It can achieve a sensitivity of -83.7dBm and a tolerance of IF range from 1.5MHz to 3.7MHz with a 4.7mA current consumption under a 1.8V supply.
机译：本文提出了一种用于短距离无线通信的低功耗低成本780MHz CMOS频移键控（FSK）接收器。重用电流的低功率放大器（LNA）和单平衡无源混频器用于减少接收器中RF前端的电流消耗。实现了具有可重新配置带宽的三阶有源RC复合滤波器，并在滤波器中使用了新型自动调谐电路，以消除过程，电压，温度（PVT）变化的负面影响。在解调器中采用了新颖的复制电路主从自动调谐电路和离散时间微分器，以保持解调性能不受PVT变化和中频（IF）频率偏移的影响。接收器采用0.18μmCMOS制成，占用的芯片面积约为0.97mm2。它在1.8V电源下的功耗为4.7mA，可实现-83.7dBm的灵敏度和IF容差范围为1.5MHz至3.7MHz。

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