一种应用于WLAN的抗金属四频段平面单极天线设计

用于非金属外壳设备的常规天线与金属外壳设备一起使用，会导致完全不同的回波损耗。因此，提出了一种同时适用于金属外壳和非金属外壳设备的四频段平面单极天线，该天线由一个弯曲接地层、一对寄生贴片和由同轴馈电激发的辐射片组成。提出的天线能够在不同类型接地层影响下，保持其谐振频率一致性，甚至能够连接到金属外壳上。该天线适用于在WLAN 2.4/5.2/5.8 GHz、WiMAX 3.5/5.5 GHz和4.5GHz工作的多种应用。仿真和实际测量结果显示，即便是连接到较大的金属外壳或金属板时，提出天线能够较好地保持回波损耗和增益一致性且符合行业标准。

An anti-metallic quad-band planar monopole antenna design for WLAN applications

Conventional antennas used in nonmetallic enclosures can be used in conjunction with metal enclosures to cause very different return losses. Therefore, the four band planar monopole antenna which is suitable for both metal and non-metal shell device, the antenna consists of a ground plane, a bending of parasitic patch and excited by the coaxial feed radiation plate. The proposed antenna can maintain its resonant frequency uniformity and even connect to the metal case under the influence of different types of ground formations. The antenna is suitable for a variety of applications in WLAN, 2.4/5.2/5.8, GHz, WiMAX, 3.5/5.5, GHz and 4.5GHz. Simulation and actual measurement results show that even when connected to a larger metal case or metal plate, the proposed antenna can better maintain the echo loss and gain consistency, and meet the industry standards.