Design for Harmonic Waves Suppression Based on 3 ㏈ Branch Line Coupler

• 영문명: Design for Harmonic Waves Suppression Based on 3 ㏈ Branch Line Coupler
• 발행기관: 한국해양대학교 해사산업연구소
• 저자명: Dong-Il Kim Rui Li
• 간행물 정보: 『해사산업연구소논문집』제15집, 55~60쪽, 전체 6쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2004.09.01

영문 초록

This paper presents a structure of the 3 ㏈ Branch Line Coupler that can suppress the nth harmonic wave output. The 3 ㏈ Branch Line Coupler consists of two pairs of λ/4n open stubs, which are located at the λ/4 series arms symmetrically. We established an optimal design method employing Powell's Least Square Method to design the circuit structure. Experimental results show that this 3 ㏈ Branch Line Coupler suppresses the 2nd and 3rd order harmonic waves frequency components to less than -25 ㏈, while maintaining the characteristics of a conventional 3 ㏈ Branch Line Coupler; featuring an equal power split, a simultaneous impedance matching at all ports and a good reflection and isolation. These results agree well with the simulation results.

목차

Abstract

Ⅰ. Introduction

Ⅱ. 3 ㏈ Branch Line Coupler for the nth Order Harmonic Wave uppression

Ⅲ. Simulation and Experiment

Ⅳ. Conclusion

Acknowledgements

References