一种W—V型宽带微带天线的设计与仿真

提出一种新型的宽带微带探针馈电贴片天线。天线采用空气介质层，在W形接地板顶端利用同轴探针馈电V形贴片电线，这种设计使探针在介质基板中长度较短，产生的电感较小，同时增加了介质基板的厚度，因此使天线得到较大的工作带宽。选择合适的天线尺寸，通过仿真软件HFSS测出的阻抗带宽（VSWR≤1．5）达到48．6％，覆盖2．12GHz-3．48GHz（S波段）频率范围。

Broadband Microstrip Antenna with W-Shaped Ground Plane and V-Shaped Patch

A new design broadband microstrip antenna with W-shaped ground plane and V-shaped patch is presented. The V-shaped patch is on an air substrate and is excited by a coaxial probe stretched from the top of the W- shaped ground plane. Because of the use of the proposed W-shaped ground plane and V-shaped patch, the required probe-pin length in the substrate remains small while the effective substrate thickness is significantly increased, thus facilitating a much wider operational band. With appropriate antenna dimensions and using HFSS, the measured impedance bandwidth with VSWR≤1. 5 reaches 48. 6%, covering a frequency range of 2. 12GHz- 3. 48GHz （S- band）.