枝幹耦合器／耦合線濾波器之多頻段合成設計

Synthesis of Branch-Line Coupler and Coupled-Line Filter with Multiple Bands

藍培綱(Pei-Gang Lan)

指導教授 ： 湯敬文

國立中正大學/工學院/電機工程學系/碩士(2013年)

摘要

本論文分為三個部分。第一部分提出運用開路殘段與短路殘段設計並聯電抗，並藉由此並聯電抗形成多頻帶諧振，以產生多頻帶帶通的效果。

第二部分和第三部分為第一部分的應用。第二部分提出多頻帶枝幹耦合器，藉由第一部分所介紹的並聯電抗，可將傳統的單頻枝幹耦合器延伸為多頻帶，並可任意決定所設計的頻帶位置。

第三部分提出多頻帶耦合線濾波器，將傳統的單頻帶耦合線濾波器運用前述的並聯電抗形成多頻帶，並進一步由J反轉子分析設計出各個操作頻帶。

上述電路都經過實際電路製作與量測，並將量測結果與軟體之模擬進行比較之後，驗證兩者具有良好的一致性。

關鍵字

耦合線濾波器 ； 枝幹耦合器 ； 多頻帶

並列摘要

This thesis included three parts. The first part is design of shunt reactor with open stubs and short stubs, and then we can form a multi-band filter by the shunt reactor.

The second part and the third part are application of the first part. The second part is a multi-band branch-line coupler. By the shunt reactor according to first part, we can extend the conventional branch-line coupler to the multi-band branch-line coupler at any frequencies.

The third part is a coupled-line filter. Using the shunt reactor we can transform the conventional coupled-line filter into multi-band coupled-line filter, and then analysis the operation frequencies by J-inverter.

All circuits in this thesis are simulated with full-wave electromagnetic simulator, and these circuits have been fabricated and measured. The matched results between electromagnetic simulation and measurement can demonstrate the availability of all proposed circuits.

並列關鍵字

Coupled-Line Filter ； Branch-Line Coupler ； Multi-Band

參考文獻

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[5] H. Zhang and K. J. Chen, “A stub tapped branch-line coupler for dual-band operations,” IEEE Microw. Wireless Compon. Lett., vol. 17, no. 2, pp. 106–108, Feb. 2007.

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