SPIDA: A Direction-Finding Antenna for Wireless Sensor Networks
SPIDA: A Direction-Finding Antenna for Wireless Sensor Networks
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SPIDA：用于无线传感器网络的测向天线
DOI：
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发表时间：
2010
期刊：
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通讯作者：
M. Nilsson
中科院分区：
文献类型：
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作者：
M. Nilsson
本文介绍了设计，信号处理和现场测量的SPIDA，一个方向发现天线的2.4 GHz ISM频段，用于无线传感器网络的通信和定位。天线的主要设计目标是小尺寸、低生产成本、低功耗、低信号处理要求和低接口复杂性。SPIDA最昂贵的部分是其SMA连接器。RF级的功耗与鞭状天线相同。到达角可以通过使用十次乘法的数量级的简单公式从接收功率测量计算。通过微处理器控制天线的方向只需要一对数字输出引脚。当使用TI CC2500无线电芯片进行现场测试时，未校准天线的RMS误差小于12°，最远距离为100 m，几乎覆盖了1 mW发射机输出功率下天线的整个接收范围。SPIDA天线的一个显着特点是没有旁瓣，尽管使用了一个制造友好和成本意识稀疏接地平面。
This paper presents the design, signal processing, and field measurements of SPIDA, a direction-finding antenna for the 2.4 GHz ISM band, intended for both communication and localization in wireless sensor networks. The main design goals for the antenna were small size, low production cost, low power consumption, low signal processing requirements, and low interfacing complexity. The most expensive part of SPIDA is its SMA connector. The RFstage power consumption is the same as for a whip antenna. The angle-of-arrival can be computed from received-power measurements through a simple formula using on the order of ten multiplications. Controlling the direction of the antenna by a microprocessor requires only a pair of digital output pins. When field tested with the TI CC2500 radio chip, the RMS error for the uncalibrated antenna was less than 12° up to 100 m distance, covering nearly the full receiving range of the antenna at 1 mW transmitter output power. A distinguishing feature of the SPIDA antenna is the absence of side lobes, despite using a manufacturing-friendly and cost-conscious sparse ground plane.