可調式相移陣列天線於無線通訊系統之應用

本論文主要是發明一種屬於波束切換架構且可組合排列產生多組相位差的陣列天線系統，適合在不改變現有通訊收發機裝置下，在RF前端加入此單元裝置，並加值具有陣列天線系統的諸多優點。此陣列天線系統命名為「可調式相移陣列天線系統」，限縮在1*4組成單元架構，角度設計變化靈巧，波束方向以位元方式控制、控制波束方便容易、切換速度快速，並且可以多塊單元組合、分散使用控制應用容易。另外相位產生電路構造簡單、電路板上由高頻開關、耦合器、路徑切換相移器三個部分所組成，電路使用面積少、避免線路交叉所造成的電路複雜度，構造簡單元件少，製造成本低廉、容易實現等優點。本篇論文研究從通訊應用與陣列天線觀點出發，研究波束切換系統，從陣列天線波束原理與實作，在實作陣列天線系統時遇到實用上的缺點，從改善中得到創新靈感，新的創意構思與簡易的架構去突破巴特勒矩陣波束與天線個數之問題，設計發明出可調式相移陣列天線系統，尤其具有應用靈活與產生波束方向控制容易、製造價格低廉等優點，實際製作並驗證出12波束的可調式相移陣列天線系統，介紹此一系統可應用於未來通訊的應用，例如多天線系統、MIMO與陣列天線的組合方式。

關鍵字

可調式相移陣列天線；波束切換；陣列天線系統；巴特勒矩陣；天線場形

並列摘要

In dissertation, we invented and proposed a beam switching structure which can form the array antenna system with multiple phase difference by grouping multiple beam switchers. The proposed beam switching structure can be easily deployed at the RF front end of given communication transceiver without any baseband/IF hardware modification. Such array antenna system is called the adjustable phased shift array (APSA) in which the complexity is only 1 4. The angle of APSA can be designed arbitrarily. The beam direction is controlled by digital bit streams and can be switched fast. In addition, the fabricated APSA circuit can be taken as the building block of more complicated applications. The key advantage of the APSA circuit is the simplicity. The APSA circuit consists of three RF switches, three branch line couplers, and six phase shifters, which can not only reduce complexity, PCB area, and PCB layers, but also be cost effective, and therefore the APSA circuit can be easily manufactured. The APSA structure is born at the moment we tried to reduce the complexity of Butler matrix while making the experimental circuit board, which is both innovative and practical. At the present time we have developed a 12-beam APSA circuit and verified that the pattern measured matches the simulation results using MATLAB. The APSA structure can be widely deployed for future communication demands such as multiple antenna system, SU/MU-MIMO, and array antennas.

並列關鍵字

adjustable phased shift array ； adjustable phased array system ； beam switched ； array antenna system ； Butler Matrix ； radiation pattern.

參考文獻

50. 蘇詠傑，應用於室內環境之多天線系統的探討與分析，碩士論文，國立臺北科技大學電腦與通訊研究所，臺北，2012。

20. H. Moody, “The systematic design of the Butler matrix,” Antennas and Propagation, IEEE Transactions on, vol. 12, pp. 786-788, 1964.

21. T. A. Denidni and M. Nedil, “Experimental investigation of a new butler matrix using slotline technology for beamforming antenna arrays,” Microwaves, Antennas & Propagation, IET, vol. 2, pp. 641-649, 2008.

22. M. Ueno, “A systematic design formulation for Butler matrix applied FFT algorithm,” Antennas and Propagation, IEEE Transactions on, vol. 29, pp. 496-501, 1981.

23. W. Jaeckle, “Systematic design of a matrix network used for antenna beam steering,” Antennas and Propagation, IEEE Transactions on, vol. 15, pp. 314-316, 1967.

國際替代計量

可調式相移陣列天線於無線通訊系統之應用

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