應用於圓極化微帶天線之環形天線陣列設計

The Design of Ring Antenna Array of the Circular Polarization Microstrip Antenna

李國彬(Kuo-Pin Li)

指導教授 ： 涂世雄

中原大學/工學院/電機工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201200712

摘要

摘 要
我們使用IE3D電磁場模擬分析軟體去設計一圓極化微帶天線，並使用低成本材料來設計微帶天線，而且利用微帶天線易於組裝架設及遷移之便利性，以取代大型螺旋天線機動架裝接收之不便性，並應用於衛星訊號接收為主題。
在本篇論文中，我們提出幾個重點，第一部份首先針對材質的選用及依照圓極化微帶天線理論與方程式，以IE3D電磁場模擬分析軟體模擬圓極化微帶天線，天線饋入設計採用單饋入法，並截去矩形接收面兩相對角，以達成激發天線圓極化之特性。第二部份則實作出天線本體，並採以天線陣列方式，將每付天線單體以旋轉90度方式融入到陣列天線中，達成圓極化陣列目的。第三部份將所設計的圓極化微帶陣列天線，進行衛星訊號接收與頻譜量測及分析，並與大型螺旋天線之性能作比較，顯示我們的研究，其效率及成本皆優於大型螺旋天線。
在這篇論文中，我們將提出以下貢獻：
（1）替換性：本文所設計的圓極化微帶陣列天線，可在大型螺旋天線故障時即時取代，避免接收任務中斷，造成資料損失。
（2）優化訊號品質：圓極化微帶陣列天線，採取陣列方式提昇增益，加強指向性並達成窄波束之特性，同時降低干擾訊號影響之程度，有效提昇衛星通信訊號接收之品質。
（3）低成本效益：本文所設計之圓極化微帶陣列天線不需花費大筆金額即可完成天線製作，不但符合低成本效益，且易於安裝及拆卸。
最後，我們可以知道，本文所提出的圓極化微帶陣列天線設計可有效提高天線本體增益，降低天線成本及提昇訊號接收效率進而增加通訊靈活度等優勢。

關鍵字

軸比頻寬 ； 共振頻率 ； 圓極化微帶天線

並列摘要

Abstract
For this thesis, we use a Zeland Analysis Software IE3D to design a circular polarization microstrip antenna. We used low-cost materials to design a microstrip antenna and made use of it to easily assemble the structure and to conveniently move it around. As a result, we replace the inconvenience of using large helical antenna motor rack receiver. Thus, we came up with the subject of making an application in satellite signal reception.

In this thesis, we propose several key points: for the first part, we deal with selection of materials. In accordance with the circular polarization microstrip antenna’s theory and equations, we use the Zeland Analaysis Software IE3D to simulate circular polarization microstrip antenna. In order to achieve the special features of the stimulation of circular polarization of antenna, the antenna feed design uses single feed penetration rule and truncated 2 relative angle of the rectangular receiver surface. The second part is the implementation of the antenna body and adoption of the antenna array method. We place each antenna body to rotate 90 degrees into the antenna array to achieve the purpose of a circular polarization array. The third part is the implementation of the satellite signal receiver, spectrum measurement, and analysis of the circular polarized microstrip array antenna design. In addition, performance comparison with large-scale helical antenna will be given. And as shown from our research, its efficiency and cost are both advantageous to large-scale helical antenna.

In this thesis, we will present the following contributions:
(1) Replacement：The thesis’ circular polarization microstrip array antenna design can be used as immediate replacement when experiencing failure for large helical antenna. This will avoid interruption in receiving task, resulting in data loss.
(2) High Quality of Signal：Circular polarization microstrip array antenna makes use of array method to enhance the gain, improve directivity, and reach the narrow beam characteristic. At the same time, it reduces the level of interference signal influence, resulting to enhanced quality of signal reception of satellite communications.
(3) Low-Cost-Effectiveness：This thesis’ circular polarization microstrip array antenna design doesn’t require a large amount of money to complete the antenna production. This not only meets low-cost-effectiveness, but also provides easy installation and removal.

Finally, we can know that the circular polarization microstrip array antenna design presented in this thesis can effectively improve the antenna body gain, reduce the antenna cost and enhance the efficiency of signal reception. Accordingly, it increases the communications flexibility and other advantages.

並列關鍵字

resonant frequency ； axial ratio bandwidth ； circular polarization microstrip antenna

參考文獻

[2] J. Q. Howell, "Microstrip antennas, " in Dig. Int. Symp. Antennas Propagat.

162, Jan, 23, 1973.

[4] R. E. Munson, "Conformal microstrip antennas and microstrip phased arrays,

" IEEE Trans, Antennas Propagat., vol. AP-22, no. l. pp. 74-77, Jan, 1974.

[5] J. Q. Howell, "Microstrip antennas, " IEEE Trans. Antennas Propagat., vol.