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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Fully Integrated, Regulatorless CMOS Power Amplifier for Long-Range Wireless Sensor Communication
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A Fully Integrated, Regulatorless CMOS Power Amplifier for Long-Range Wireless Sensor Communication

机译：用于远程无线传感器通信的全集成，无稳压器CMOS功率放大器

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摘要

This paper presents a CMOS power amplifier (PA) system designed with the explicit goal of customizing a high-output power transmitter for sensor applications, where the supply voltage from an energy storage element is often time varying. The PA is intended for use in a long-range sensor transceiver and can operate directly off a super-capacitor source. A constant output-power, regulatorless, series power-combined PA with a fully integrated tunable matching network is implemented in an attempt to eliminate all energy losses associated with a high-current voltage regulator. The PA monitors the output voltage at the off-chip antenna and digitally modulates the PA load impedance to maintain a constant target output power as the super-capacitor discharges. The PA system, integrated in a 90-nm CMOS process, has a peak output power of 24 dBm with an efficiency of 12% at 1.8 GHz, making it suitable for sensor data communication over distances of several hundred meters. As the PA supply varies from 2.5 to 1.5 V, the power control loop maintains a constant output power with an accuracy of $pm$ 0.8 dB.
机译：本文提出了一种CMOS功率放大器（PA）系统，其设计目标明确是为传感器应用定制高输出功率发送器，在该应用中，来自储能元件的电源电压经常随时间变化。该PA旨在用于远程传感器收发器，并且可以直接在超级电容器电源下工作。为了消除与大电流稳压器相关的所有能量损耗，实现了具有完全集成的可调匹配网络的恒定输出功率，无稳压器的串联功率组合式PA。 PA监视片外天线的输出电压，并数字调制PA负载阻抗，以在超级电容器放电时保持恒定的目标输出功率。集成在90纳米CMOS工艺中的PA系统具有24 dBm的峰值输出功率，在1.8 GHz时的效率为12％，使其适用于数百米距离内的传感器数据通信。当PA电源在2.5至1.5 V之间变化时，功率控制环路可保持恒定的输出功率，精度为$ pm $ 0.8 dB。

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