24GHz四埠方向耦合器之研究

Research of 4 ports Directional coupler in 24 GHz

翟宗元(Chung-Yuan Chai)

指導教授 ： 朱國瑞

國立臺灣大學/理學院/物理學研究所/碩士(2016年)

https://doi.org/10.6342/NTU201601966

摘要

本篇論文著重在設計四埠方向耦合器，採用三個耦合孔連結兩個規格為WR-42的波導管。目標為在21.5 GHz和26.5 GHz之間達到 30 dB的耦合度及30 dB以上的定向性，使用HFSS模擬軟體模擬其最佳化的結構並探討模擬結果背後之物理原因。

關鍵字

方向耦合器 ； 耦合度 ； 定向性 ； 模擬 ； HFSS

並列摘要

In this thesis, we design a 4-port directional coupler and take three hole as connection between two WR-42 waveguide. The target is to achieve 30 dB coupling factor and 30 dB or higher directivity between 21.5 GHz 26.5 GHz. We use HFSS simulation software to get the optimized structure and discuss the physical meaning of result.

並列關鍵字

directional coupler ； coupling factor ； directivity ； simulation ； HFSS

參考文獻

[6] T. N. Anderson, Directional coupler design nomograms, Microwave J., Vol. 2, pp. 34-38, May 1959.

[2] D.M. Pozar, Microwave Engineering. Addison Wesley, 1990.

[4] R. Levy, Analysis and synthesis of waveguide multiaperture directional couplers, IEEE Trans. Microwave Theory Tech., Vol. MTT-16, pp. 995-1006, Dec. 1968.

[5] S. E. Miller, Coupled wave theory and waveguide applications, Bell Syst. Tech. J., Vol. 33, pp. 661-719, May 1954.

[9] M. Horno and F. Medina, Multilayer planar structures for high directivity directional coupler design, IEEE Trans. Microwave Theory Tech., Vol. MTT-34, pp. 1442-1448, Dec. 1986.