一个2.4GHz的广域CMOS电流模式类D PA与HD2抑制物联网应用程序的物联网
1Department of Information and Communication Engineering, School of Electrical and Computer Engineering, Chungbuk National University, Cheongju-Si 28644, Republic of Korea.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
本研究介绍了物联网设备的集成发射器,提高了能源效率和输出功率范围. 它通过使用蓝牙和Zigbee实现了对可靠的无线传感器网络的卓越波抑制.
科学领域:
- 集成电路设计 集成电路设计
- 无线通信系统无线通信系统
- 无线电频率工程 无线电频率工程
背景情况:
- 短距离物联网 (IoT) 传感器节点需要为无线传感器网络 (WSN) 提供节能,广泛的输出功率.
- 在使用低功耗蓝牙 (BLE) 和Zigbee的无线人体区域网络 (WBAN) 和无线个人区域网络 (WPAN) 中,单一芯片上的集成至关重要.
研究的目的:
- 提出一个完全集成的发射器 (TX) 使用数字可控制的电流模式类D (CMCD) 功率放大器 (PA).
- 为了实现第二波扭曲 (HD2) 抑制,减少VCO拉动和遵守波法规.
- 在WBAN和WPAN中增强BLE和Zigbee标准的性能.
主要方法:
- 开发一个具有7位可重新配置切片 (差分/单端) 的CMCD PA.
- 对HD2抑制的工作周期扭曲补偿的实施.
- 一个HD2排斥波器和一个修改后的C-L-C低通波器 (LPF) 的集成.
主要成果:
- 实现了广泛的输出功率 (POUT) 范围,从12.1到-31 dBm.
- 在12.1dBm POUT下,最高效率为39.8%,耗电量为41.1mW.
- 在9.93dBmPOUT时,校准的HD2级别为-82.2dBc,产生TX值 (TX_FoM) 的数字为-97.52dB.
结论:
- 拟议的集成TX符合监管要求,在12.1dBmPOUT时,高阶波水平低于-41.2dBm.
- 该设计为物联网应用提供了显著的效率,输出功率范围和压缩的改进.
- 可重新配置的CMCD PA架构为现代无线通信标准提供了灵活而强大的解决方案.
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