一种用于WSN的微小型UWB雷达天线设计

Design of a UWB radar antenna with a miniature configuration for WSN applications

摘要:

超宽带雷达不受雨、雪、声、风等自然环境的干扰，可用于无线传感器网络并全天候工作；在通信领域，超宽带雷达可避免多径干扰问题，解决无线传感器网络在复杂多径环境中的应用局限问题。故超宽带雷达可以与无线传感器网络形成天然的结合。为满足无线传感器网络低功耗、体积小的要求，设计了一种微小型超宽带雷达天线。该天线为共面波导方式馈电的贴片式微带天线。仿真结果表明，天线具有体积小、带宽广(1.78~2.38 GHz)、全向性好的优点，满足无线传感器网络应用需求，并可避免与已用无线通信频段的干扰，具有广阔的应用前景。

Abstract:

Ultra Wide Band(UWB) radar can avoid interference from snow，sound，wind and other natural environments. So it can be used in wireless sensor networks and work all day without considering weather. Ultra-wideband radar has the ability to avoid multipath interference problems in communications. Therefore，ultra-wideband can be combined with wireless sensor networks. To meet the requirements of wireless sensor networks，a ultra-wideband radar antenna with small size is proposed. The proposed antenna is a microstrip antenna fed by a Coplanar Waveguide(CPW). The simulated results show that the antenna has many advantages, including small size，wide-bandwidth(1.78-2.38 GHz)，and good omni-directivity. The antenna can avoid interference of the existing wireless communication bands，and shows broad application prospects.