天線工程 報告 南台科技大學 電子工程系 學號: M9730226 學生:鄭偉廷
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Transcript of 天線工程 報告 南台科技大學 電子工程系 學號: M9730226 學生:鄭偉廷
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天線工程報告
南台科技大學電子工程系
學號: M9730226學生:鄭偉廷
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IEEE Xplore
Wideband and Low Sidelobe Slot Antenna Fed
by Series-fed Printed Array
Reza Bayderkhani and Hamid Reza Hassani
ISSN : 0018-926X Digital Object Identifier : 10.1109/TAP.2010.2078437
Date of Publication : 23 九月 2010 Sponsored by : IEEE Antennas and Propagation Society
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
一個組合插槽和串聯天線陣列引入導致天線陣列寬頻寬,低旁瓣準位 (SLL),高前端至後端的比例 (F/B)。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
簡介印刷式陣列天線通常用在通訊系統,如點對點
或點對多點的微波雷達和毫米系統。具有許多吸引人的特點,例如:體積小、重量輕、成本低、易於製造。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
天線設計和結構此結構主要的目的是要設計一個低 SLL ,寬頻
寬串聯印刷陣列天線。所以,先設計一個傳統的串聯微帶陣列天線作為參考天線。
為了達到低 SLL 及阻抗寬頻的要求,在此引用一些修改過可以被執行的天線。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
微帶串聯陣列天線 ( 參考天線 )
選用 corner-fed ,是因為它們提供高輸入阻抗,因此非常適合用於串聯陣列上。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
雙向串聯印刷陣列天線(a) 寬大的插槽設在地面上 (b) 側視圖
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
單向串聯印刷天線陣列在地面上的插槽利用反射,在基板上面印著輻射元素,變成單向的。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
結果與討論在本文中,詳細模擬和實驗結果,提出建議天
線。第一部分,傳統的線性微帶串聯陣列天線〈參考天線〉,進行研究。第二部分,對雙向寬帶串聯印刷陣列天線的大槽在地面上,進行分析。最後,一個單向寬帶串聯印刷陣列天線使用數組在地面上,正在調查。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
對參考天線進行了研究。左圖顯示了模擬以及實測天線的反射係數。右圖顯示了模擬與測量天線陣列的 E 和 H 面。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
對雙向串聯印刷陣列天線進行分析左圖顯示了模擬與測量天線的反射係數。右圖顯示了模擬與測量天線陣列的 E 和 H 面。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
對雙向串聯印刷陣列天線進行分析,改變插槽寬度對反射係數的影響。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
電流分布的反射面(a) 雙向串聯陣列天線的寬大插槽(b) 數組單向串聯陣列天線的插槽
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
對單向串聯印刷陣列天線進行分析左圖顯示了模擬與測量天線的反射係數。右圖顯示了模擬與測量天線陣列的 E 和 H 面。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
對單向串聯印刷陣列天線進行分析,測量 H面輻射場型在三種不同的頻率寬帶。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
單向串聯印刷陣列天線的反向係數,因各種插槽長度 Lsa 不同而有所變化。
12 13 14 One large slot
SLL (dB )
-31.6 -32.5 -32.8 -33.1
Gain (dBi )
18.1 18.45 18.65 18.8
F/B (dB )
49 40 33 24
Lsa(mm)
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
單向串聯印刷陣列天線的反向係數,因各種反射間距不同而有所變化。
1 1.5 2 3.5 4.5
SLL (dB )
-29.5 -32.5 -29.7 -27.9 -27.1
Gain (dBi )
18.2 18.45 18.5 18.65 18.9
F/B (dB )
45 43 40 37 33
g(mm)
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
模擬和實測兩項不同的天線,單向和雙向天線的不同頻率。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
Wideband and Low Sidelobe Slot Antenna Fedby Series-fed Printed Array
概述三種天線結構
Antenna Parameter Referenceantenna
Bi-directionalAntenna
Uni-directionalantenna
SLL (dB) -24 -33.2 -32.5
Average SLL (dB) < -33 < -35 < -48
ImpedanceBandwidth (GHz)
15.95 – 16.5 11.3 – 23 10.3 – 23.1
Radiation Bandwidth(GHz)
16 – 16.5 14.5 – 17 14.5 – 17
Bandwidth, SLL≤-20dB (GHz)
16.15 – 16.35 15.5 – 16.4 15.4 – 16.45
F/B (dB) 23 40
Gain (dBi) 18.95 15.9 18.45
HPBW (degree) 4.9 5.8 4.5
Efficiency (%) 93.86 90.3 88.5
Cross polarizationlevel (dB) offbroadside
< -25 < -34 < -34
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
結論 一個簡單的方法已經被提出,透過微帶串聯
陣列天線將一個簡單的插槽置於地面上,同時增加阻抗頻寬,降低 SLL ,增加 F / B 。
該天線結構是平面配置,易於設計和製造,印刷陣列天線可進行線性和平面 (linear and planar) 。
該方法將插槽放置於地面上,結果微帶串聯陣列天線是一個非常低的 cross-polarization 。
Reza Bayderkhani and Hamid Reza Hassani , ” Wideband and Low Sidelobe Slot Antenna Fed by Series-fed Printed Array” ,IEEE Transactions on Antennas and Propagation, September 2010
心得 在日常生活中,天線是不可或缺的產品構造
之一,例如手機、計程車無線電等,都是隨處可見的。相對在使用上,竟可能以體積小和重量輕為主,以消費者角度,便宜也是關鍵。所以在製造天線的考量上,需具備輕、薄、短小、成本低,才能滿足大眾的需求。