Reduced size single and dual band linear polarized microstrip antennas for mobile communications

IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229) Pub Date : 2001-07-08 DOI:10.1109/APS.2001.959495

R. R. Ramirez, H. Elsadek, L. Jofre, F. De Flaviis

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引用次数: 13

Abstract

Two techniques to reduce the physical size of circular and rectangular microstrip patch antennas are presented. By utilizing the symmetry of the resonant current distribution, the size of the antenna can be reduced by one-half of the original patch. Second, slits are inserted within the antenna which are perpendicular to the resonant current. This forces the current to flow around the obstacles which has the effect of reducing the resonant frequency. Using slits, an antenna of one-fourth the area of the original patch can be realized. Lastly, using two patches displaced laterally or vertically an antenna with dual band capabilities can be realized. The two frequency bands, 1.8, 2.4 GHz and 5.2, 5.7 GHz, are chosen to lie within the existing PCS and Bluetooth bands and the two future Bluetooth frequency bands, respectively. The antenna geometry is an aperture coupled microstrip antenna. The reduced size and thin substrate thicknesses give compatibility with portable communications systems.

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缩小尺寸的单双波段线性极化微带天线用于移动通信

提出了减小圆形微带贴片天线和矩形微带贴片天线物理尺寸的两种方法。利用谐振电流分布的对称性，天线的尺寸可以减小到原贴片的一半。第二，在天线内插入垂直于谐振电流的狭缝。这迫使电流绕过障碍物，从而降低了谐振频率。利用狭缝，可以实现天线面积为原贴片面积的四分之一。最后，利用横向或垂直位移的两个贴片，可以实现具有双频段能力的天线。选择1.8、2.4 GHz和5.2、5.7 GHz这两个频段，分别属于现有的PCS和蓝牙频段以及未来的两个蓝牙频段。天线几何形状为孔径耦合微带天线。减小的尺寸和薄衬底厚度使其与便携式通信系统兼容。

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IEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229)

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