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研究生:賴妍彤
研究生(外文):LAI,YAN-TONG
論文名稱:應用於Ku-Band的低軌道衛星地面站之陣列天線設計
論文名稱(外文):Design of Ku-Band Array Antenna for Low Earth Orbit Satellite Ground Station
指導教授:陳華明陳華明引用關係林憶芳林憶芳引用關係
指導教授(外文):CHEN,HUA-MINGLIN,YI-FANG
口試委員:陳華明林憶芳陳宏典周良哲
口試委員(外文):CHEN,HUA-MINGLIN,YI-FANGCHEN,HUNG-TIENCHOU,LIANG-CHE
口試日期:2023-07-21
學位類別:碩士
校院名稱:國立高雄科技大學
系所名稱:光電工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2023
畢業學年度:111
語文別:中文
論文頁數:69
中文關鍵詞:低軌衛星地面站微帶線耦合高增益天線威爾金森功率分配器
外文關鍵詞:low Earth orbit satellite ground stationmicrostrip line couplinghigh gain antennaWilkinson power divider
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本論文提出應用於低軌衛星地面站 Ku 頻段通訊的天線陣列設計。隨著低軌道衛星通訊技術的突破、應用需求的增強以及衛星成本的下降,這些設計有助於低軌道衛星的規模化製造,具有研發週期短、成本低等特點。因此,本論文提出了應用於低軌衛星地面站 Ku 頻段的線性極化和圓極化天線陣列設計。
  第一款天線設計為應用於 Ku 頻段線性極化的 Patch 天線,使用微帶線耦合饋入天線。在 Ku 頻段中,使用 2 × 2、4 × 4 和 8 × 8 的陣列天線,結合四分之一波長阻抗轉換器,以實現高增益和寬頻的性能。
第二款天線應用於Ku 頻段圓極化之Patch天線設計,具單饋入功率分配器的圓極化微帶天線陣列。在設計天線採用非共面饋入微帶線,採用了在元件和子陣列之間提高隔離度的威爾金森功率分配器。此設計可提高軸比頻寬之表現,也能夠實現在Ku頻段內更廣泛的通訊覆蓋。

In this thesis,an antenna array design for Ku-band communication in low Earth orbit satellite ground stations is proposed.With advancements in low Earth orbit satellite communication technology, increasing application demands, and decreasing satellite costs, these designs contribute to the scaled manufacturing of low Earth orbit satellites with characteristics such as short development cycles and low costs. Therefore, linearly polarized and circularly polarized antenna array designs for Ku-band applications in low Earth orbit satellite ground stations are presented.
The first antenna design is a patch antenna for linearly polarized Ku-band applications, utilizing microstrip line-coupled patch antennas. In the Ku-band, 2 × 2、 4 × 4, and 8 × 8 patch array antennas are employed in combination with T-type power dividers to achieve high gain and wideband performance.
The second antenna design is a patch antenna for circularly polarized Ku-band applications, featuring a circularly polarized microstrip antenna array with a single-feed power divider. In this design, non-coplanar feedlines are used, along with Wilkinson power dividers, to enhance isolation between elements and sub-arrays. This design improves axial ratio bandwidth performance and enables broader communication coverage within the Ku-band.

摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 V
表目錄 VII
第一章 緒論 1
1.1 研究背景 1
1.2 研究動機 3
1.3 文獻導覽 4
1.4 論文架構 5
第二章 應用於低軌衛星天線之線性陣列設計 6
2.1 前言 6
2.2 天線原理與設計 6
2.3 天線實驗與量測結果 8
2.4 線性陣列天線原理與設計討論 12
2.5 線性極化之陣列天線實驗與量測結果 18
2.6 結論 33
第三章 應用於低軌衛星天線之圓極化陣列設計 34
3.1 前言 34
3.2 威爾金森功率分配器 34
3.3 單元天線設計原理與結構 36
3.4 單元天線實驗與量測結果 37
3.5 圓極化之陣列天線原理與設計討論 43
3.6 圓極化之陣列天線實驗與量測結果 48
3.7 結論 57
第四章 研究結論與未來展望 58
參考文獻 59

[1]2019 ~ 2023年全球衛星產業產值預估,網址:https://www.bnext.com.tw/article/71771/leo-compatible--5g-components0920
[2]K. M. Keen, “A planar log-periodic antenna,” IEEE Trans. Antenna Propag., vol. 22, No.3, pp. 489-490, May. 1974.
[3]M. K. A. Rahim and P. Gardner, “The design of nine element quasi microstrip log-periodic antenna,” Proceedings RF and Microwave Conference, pp. 132-135, Oct. 2004.
[4]K. M. P. Aghdam, R. Faraji-Dana, and J. Rashed-Mohassel, “Planar channelized log-periodic antenna,” IEEE International Symposium on Microwave, vol. 1, pp. 306-309, Aug. 2005.
[5]K. M. P. Aghdam, R. Faraji-Dana, and J. Rashed-Mohassel, “Compact dual-polarisation planar log-periodic antenna with integrated feed circuit,” IEE Proc.-Microw, vol. 152, No.5, pp. 359-366, Oct. 2005.
[6]P. S. Hall and C. M. Hall, "Coplanar corporate feed effects in microstrip patch array design", Inst. Elect. Eng. Proc. H Microw. Antennas Propag., vol. 135, no. 3, pp. 180-186, Jun. 1988.
[7]郭瓊英, WiMAX高增益陣列天線之設計, 碩士論文,國立高雄科技大學光電工程研究所,高雄,2010。
[8]Yong-Jin Hu, Wei-Ping Ding, and Wen-Quan Cao, “Broadband circularly polarized microstrip antenna array using sequentially rotated technique,” IEEE Antennas and Wireless Propagation Letters, Volume: 10, pp. 1358-1361, November 2011.
[9]常用衛星通信頻段梳理:C頻段、Ku頻段和Ka頻段,網址:
http://www.creatunion.com/newsinfo/1632195.html?templateId=1133604
[10]Tai-Lee Chen and Hsu-Sheng Wu, “Dual-polarized planar reflector feed for direct
broadcast satellite systems,” IEEE Antennas and Wireless Propagation Letters, VOL. 9, 2010.
[11]Andrew R. Weily and Nasiha Nikolic, “Dual-polarized planar feed for low-profile hemispherical luneburg lens antennas,” IEEE Transactions on Antennas and Propagation, VOL. 60, NO. 1, JANUARY 2012.
[12]四分之一波長阻抗轉換器,網址:
https://em.emedu.org.tw/elec_sim/7-3.html
[13]四分之一波長傳輸線應用舉例,網址:
https://read01.com/zh-tw/gzx2PQd.html
[14]Anushka Tiwari, Udaya bhaskar Pattapu, and Sushrut Das, “A wideband 1:2 T-junction power divider for antenna array with optimum results,” IEEE 2018 3rd International Conference on Microwave and Photonics (ICMAP), May 2018.
[15]Liang Han and Ke Wu, “24-GHz bandwidth-enhanced microstrip array printed on
a single-layer electrically-thin substrate for automotive applications,” IEEE Transactions on Antennas and Propagation, VOL. 60, NO. 5, MAY 2012.
[16]M.S. Abdul Wahid and M. Sreenivasan, P. H. Rao, “Design optmization Of low sidelobe level microstrip array,” IEEE Conference Paper, February 2015.
[17]J Huang and D. M. Pozar, "Miscrotrip arrays: analysis design and applications" in Advances in Microstrip and Printed Antennas, pp. 123, 1997.
[18]Wikipedia, Wilkinson power divider,網址:
https://en.wikipedia.org/wiki/Wilkinson_power_divider
[19]Microwave101.com, Wilkinson Power Splitters,網址:
https://www.microwaves101.com/encyclopedias/wilkinson-power-splitters
[20]Size reduction and performance improvement of a microstrip wilkinson power divider using a hybrid design technique,網址:
https://www.nature.com/articles/s41598-021-87477-4

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