一般常用於表示天線輻射特性的是E平面與H平面極化場型，然而3D天線場型展現出較2D場型還多的輻射特性諸如最大增益、指向性、總輻射功率與幅射效率等，因為2D極化場型所包覆的兩個切面無法完整的描述空間特性。
在本文中將介紹與探討兩種3D天線場型量測之方法, Conical-Cut Method與Great-Circle Method，其所包覆的35個切面可以完整的描述空間特性。另外提出ㄧ個簡單、快速，利用運算2D場型來建立3D場型的方法，因為3D場型需要較高的建置成本與較多的量測時間。將E1平面場型沿著H平面場型上的軌跡繞Z軸旋轉來獲的其他的E平面場型，建構一個相近的3D場型。實際量測的3D場型與利用2D場型運算的3D場型將被拿來比較與討論。最大的增益可能不會剛好落在三個平面場型上，若只有量測2D場型可能會忽略真正最大的增益，而天線幅射效率更是需要3D場型來獲得，不論是量測或是運算所得，本文中所研究的例子其誤差在12%以內。
此外將以ㄧ個WLAN/WiMAX天線為一應用，討論從天線設計至3D天線場型量測與運算，分析其天線特性及比較其差異。關於所提天線詳細的設計已被敘述於文中，此天線已成功地實現，實驗結果已呈現，量測與運算所的3D場型及天線特性亦被分析。

Usually, E-plane and H-plane polar patterns are used to represent the antenna radiation characteristics. But 3D antenna pattern has capability to exhibit more radiation characteristics than 2D patterns such as peak gain, directivity, total radiated power, and radiation efficiency, because 2D polar patterns containing only two cuts can not exhibit the spatial characteristics completely.
In this thesis, two methods of 3D antenna pattern measurement (Conical-Cut Method and Great-Circle Method), which can contain 35 cuts to exhibit spatial characteristics more completely, are introduced and discussed. Besides, a simple and fast alternative approach utilizing 2D patterns to construct 3D patterns is presented, due to a higher cost of the build and longer test duration of 3D pattern measurement. Revolving the E1-plane pattern around the Z-axis along the trace of H-plane pattern can obtain other E-plane patterns to construct a similar 3D pattern. The measured 3D pattern and the calculated 3D pattern using 2D patterns will be analyzed and discussed. The peak gain may not occur at either three plane patterns. If only plane patterns are measured, the peak gain might be missed. The antenna radiation efficiency has to be obtained by either the 3D pattern measurement or calculation. The study cases in this thesis, the deviation of efficiency is within 12%.
In addition, an application for a WLAN/WiMAX antenna is discussed, from the antenna design to measurement and calculated of 3D antenna patterns, and the antenna characteristics obtained by them are analyzed and compared. Detail designs of the proposed antenna are described. The measured and calculated 3D patterns as well as antenna characteristics are also analyzed.

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