一种新型桥式复合结构的高增益宽波束微带天线

Novel High-Gain Wide-Beam Microstrip Antenna with Bridge-Type Composite Structure

针对高速移动通信系统中天线的需求,提出了一种桥式复合介质板结构,设计了一款高增益、宽波束、小型化微带天线。仿真和实测结果表明,该天线在2.36~2.56 GHz(8.1%)的带宽内驻波小于2,增益为7.1 dBi,3 dB波束宽度为80°×90°(E面×H面),尺寸仅0.45λ0×0.45λ0×0.07λ0(λ0为工作频带的中心频点波长),且具有结构简单的特性,适用于机载、车载等高速移动通信系统以及雷达、卫星等移动通信系统,也可作为垂直极化高增益全向天线阵列的阵子单元。

Aiming at the needs of antennas in high-speed mobile communication system,a bridge-type composite dielectric plate structure is proposed,and a high-gain,wide-beam,miniaturized microstrip antenna designed.Simulation and actual measurement results indicate that the standing wave of the antenna is less than 2 in the bandwidth of 2.36~2.56 GHz(8.1%),the gain is 7.1 dBi,the 3 dB beam width is 80°×90°(E plane×H plane),the size is only 0.45λ0×0.45λ0×0.07λ0(λ0 is the center frequency point wavelength of the working band),and the antenna has simple structure,which is suitable for high-speed mobile communication systems such as airborne,vehicle,radar,satellite,etc.And it can also be used as the array element of vertically-polarized high-gain omnidirectional antenna array.