不同形状单贴片单层微带贴片天线的扩展带宽技术

采用多种带宽改进技术,应用于不同形状的单层片状天线,主要包括:短路销钉,双宽缝(E形)等.同时,采用基于MOM的软件包分析了天线性能,证明方形天线可以工作在3个频率点,即1.83GHz、2.16GHz和2.74GHz,其最大的增益达到9.4dB;E形天线工作在2.13GHz和2.5GHz,当中心频率为2.4GHz时,带宽达到33.33%(反射损耗≤-10dB),其最大增益为9.25dB.

Bandwidth Enhancement Techniques for Different Shapes of Single-Patch Single-Layer Microstrip Patch Antenna

Several techniques of bandwidth enhancement are adopted in this paper for different shapes of single-layer single-patch antenna. They are mainly: the probe-fed square patch antenna with shorting pins, and the probe-fed rectangular patch antenna with a pair of wide slits (E-shaped patch). The analyses were carried out using method of moments software package. It is shown that the probe-fed square patch antenna can be made resonate at three different frequencies of 1.83 GHz, 2.16 GHz and 2.74 GHz respectively with a peak gain of 9.4 dB. The Eshaped patch is designed to resonate at two different frequencies of 2.13 GHz and 2.5 GHz with overall impedance bandwidth of about 33.33% (return loss≤-10dB) with respect to a center frequency of 2.4 GHz. The peak gain is about 9.25dB.