一种小型圆极化天线设计

Design of A Miniaturized Circular Polarization Antenna

设计了一款小型圆极化微带天线,将两块堆叠的矩形贴片与矩形缝隙环结构围绕的接地短针结合,实现了天线有效的小型化,相比参考天线谐振频率降低了39%,通过调整矩形缝隙环的长度引入微扰,实现天线的圆极化。天线的工作频段为2.69~2.78 GHz,在0.32λ0×0.32λ0×0.32λ0的尺寸下,带内最大增益达到5.03 dB。

This paper designs a miniaturized microstrip antenna with circular polarization,which combines two stacked rectangular patches with the grounding short needle around with rectangular crevice ring structure to achieve the antenna miniaturization effectively.The resonant frequency of this antenna is decreased by 39 percent compared to that of the reference antenna,the perturbation is led in by adjusting the length of rectangular slot rings to realize the antenna circular polarization.The operating frequency of the antenna is 2.69~2.78 GHz,and the maximum in-band gain reaches 5.03 dB under the size of 0.32λ0×0.32λ0×0.32λ0.