新的双频双极化开槽微带天线的设计方法-------外文翻译.doc
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新的双频双极化开槽微带天线的设计方法-------外文翻译,abstract: this paper presents a new method for designing a dual-frequency patch antenna with circular and linear polarizations. dual-frequency operations are be...
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Abstract: This paper presents a new method for designing a dual-frequency patch antenna with circular and linear polarizations. Dual-frequency operations are behaved by etching two narrow slots close to the radiating edges of a rectangular patch. The circular polarization at the lower resonant frequency of the dual-frequency antenna can be achieved by setting a perturbation segment at an appropriate location in the patch element, and placing the feed point on the diagonal axis. Several experimental results of a designed antenna show the good characteristics for circular and linear polarizations at both resonant frequencies.
CLC number：TN821.1 Document code： A
Key words: dual-frequency; slot patch antennas; linear polarization; circular polarization
In radar and communication systems, dual-frequency operations are often required. Specially, in modern mobile global position system (GPS), it will be desirable that one of two frequencies is the circular polarization. Planar antenna has been investigated for multi-frequency very well since it is advantageous in low cost, low weight and conform ability. Early dual-frequency planar antenna is multilayered stacked-patch structure, and the radiating element is used to be circular[1], annular[2], rectangular[3]and triangular patches[4]. Recently, a dual-frequency antenna is introduced in which the structure is dingle layer patch with two slots close to the radiating edges, and good performances of simultaneous impedance matching and gain are demonstrated for both resonant frequencies. However, all the conventional investigations are only for the case in which the antenna polarization is linear, while the dual-frequency antenna with circular polarization has not been touched yet.
摘 要：提出了一种同时具有圆极化和线极化的双频新型开槽微带天线的设计方法。天线双频工作是通过分别在靠近方形微带天线的两个辐射边处各开一个平行的窄槽来实现的。在较低的谐振频率处圆极化的可以通过在天线辐射单元上适当地设置摄动元素，并将馈电点移到辐射单元的对角线上。一个设计天线的测试结果给出了该天线在两个谐振频率上具有很好的圆极化和线极化的天线性能。
关键词：双频；开槽微带天线；线性极化；圆极化
在雷达和通信系统中，经常需要双频工作。特别是在现代的移动全球定位系统中，通常要求双频之一为圆极化。因为平面天线在低成本、重量轻和稳定性方面的优点，已经被广泛研究并较好的应用于多频带系统中。早期的双频平面天线是多层栈式贴片结构，它的辐射单元习惯上为圆形、环形、矩形和三角形。最近，提出了一种双频天线，这种天线的结构是单层贴片，且有两个槽靠近辐射边缘，并且在两个谐振频率上既实现阻抗匹配又具有好的增益性能。然而，常规的研究仅仅针对线性极化的天线，拥有圆极化的双频天线却还没有被实现。
CLC number：TN821.1 Document code： A
Key words: dual-frequency; slot patch antennas; linear polarization; circular polarization
In radar and communication systems, dual-frequency operations are often required. Specially, in modern mobile global position system (GPS), it will be desirable that one of two frequencies is the circular polarization. Planar antenna has been investigated for multi-frequency very well since it is advantageous in low cost, low weight and conform ability. Early dual-frequency planar antenna is multilayered stacked-patch structure, and the radiating element is used to be circular[1], annular[2], rectangular[3]and triangular patches[4]. Recently, a dual-frequency antenna is introduced in which the structure is dingle layer patch with two slots close to the radiating edges, and good performances of simultaneous impedance matching and gain are demonstrated for both resonant frequencies. However, all the conventional investigations are only for the case in which the antenna polarization is linear, while the dual-frequency antenna with circular polarization has not been touched yet.
摘 要：提出了一种同时具有圆极化和线极化的双频新型开槽微带天线的设计方法。天线双频工作是通过分别在靠近方形微带天线的两个辐射边处各开一个平行的窄槽来实现的。在较低的谐振频率处圆极化的可以通过在天线辐射单元上适当地设置摄动元素，并将馈电点移到辐射单元的对角线上。一个设计天线的测试结果给出了该天线在两个谐振频率上具有很好的圆极化和线极化的天线性能。
关键词：双频；开槽微带天线；线性极化；圆极化
在雷达和通信系统中，经常需要双频工作。特别是在现代的移动全球定位系统中，通常要求双频之一为圆极化。因为平面天线在低成本、重量轻和稳定性方面的优点，已经被广泛研究并较好的应用于多频带系统中。早期的双频平面天线是多层栈式贴片结构，它的辐射单元习惯上为圆形、环形、矩形和三角形。最近，提出了一种双频天线，这种天线的结构是单层贴片，且有两个槽靠近辐射边缘，并且在两个谐振频率上既实现阻抗匹配又具有好的增益性能。然而，常规的研究仅仅针对线性极化的天线，拥有圆极化的双频天线却还没有被实现。
