以旋轉饋入單元組成微帶陣列天線之研究

PERFORMANCE OF MICROSTRIP ARRAY WITH ROTATION-FEEDING ELEMENTS

呂科漢(Ko-han Lu)

指導教授 ： 張知難

大同大學/電機資訊學院/通訊工程研究所/碩士(2004年)

摘要

本篇論文針對並聯饋入式微帶陣列天線進行研究。利用一個串聯餽入的槽狀耦合架構，作為我們的天線單元。以串聯式餽入的方式，在每個單體的層次上將可有連續旋轉的效應。我們藉由此連續旋轉的餽入方式，加上四個單體天線，作為子陣列。
於此篇論文，我們製造四單元、十六單元和六十四個單元的陣列天線。其最大的天線增益分別為15.3、21和24.5 dBic。所研製的天線，於頻率10GHZ至13GHZM量測，返回損失皆在15 dB以下，軸比也都在3 dB以下。天線的場型也都相當對稱。

關鍵字

槽狀耦合 ； 寬頻 ； 圓形極化 ； 旋轉 ； 陣列天線 ； 微帶 ； 高增益 ； 平面

並列摘要

In this thesis, a corporate-feed circularly polarized microstrip array antenna is studied. The antenna element is a series-feed slot-coupled structure. Series feeding causes sequential rotation effect at the element level. Antenna elements are then used to form the sub-array by applying sequential rotation to their feeding. Arrays having 4, 16, and 64 elements were made. The maximum achieved gains are 15.3, 21, and 25.4dBic respectively. All arrays have less than 15dB return loss and 3dB axial ratio from 10 to 13 GHz. The patterns are all quite symmetrical.

並列關鍵字

aperture-coupled ； circular polarization ； circularly plarized ； high gain ； planar array ； sequential rotation ； series feeding ； wideband

參考文獻

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