微带馈电的圆柱形介质谐振器天线阵

Microstrip-Fed Cylindrical Dielectric Resonator Antenna Array

提出了一种新型的圆柱形介质谐振器天线单元及其阵列设计。天线单元采用带有十字枝节终端的微带线进行馈电,在高介电常数的情况下,通过调节十字形终端枝节的设计和相对位置,获得较宽的阻抗带宽。基于此单元设计,研制了一个2×2元圆柱形介质谐振器天线阵,获得了4.2%的实测阻抗带宽和约11dBi的仿真增益。

A novel cylindrical dielectric resonator antenna element and array are presented. The antenna element is fed by a microstrip line with a cross-stub terminal. In the condition of high dielectric constant, the wider impedance band- width is obtained by simply adjusting the design and position of the cross-stub terminal. Then, based on the element design, a 2 x 2 cylindrical dielectric resonator antenna array is developed. The measured impedance bandwidth of 4.2% and a simulated gain of about 11 dBi have been achieved.