Journal of Advanced Navigation Technology (한국항행학회논문지)

The Korean Navigation Institute (한국항행학회)
권호 표지
DOI QR코드

DOI QR Code

Unequal Multi-Section Power Divider using CPW and Offset Coupled Transmission Lines

CPW와 Offset 결합 전송선로를 이용한 비대칭 다단 분배기

  • Choi, Jong-Un (Department of Electronics Engineering, Catholic Kwandong University) ;
  • Yoon, Young-Chul (Department of Electronics Engineering, Catholic Kwandong University) ;
  • Sung, Gyu-Je (Department of Electronics Engineering, Hankyong National University) ;
  • Kim, Young (School of Electronic Engineering, Kumoh National Institute of Technology)
  • 최종운 (가톨릭관동대학교 전자공학과) ;
  • 윤영철 (가톨릭관동대학교 전자공학과) ;
  • 성규제 (한경대학교 전자공학과) ;
  • 김영 (금오공과대학교 전자공학부)
  • Received : 2019.08.10
  • Accepted : 2019.08.23
  • Published : 2019.08.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper proposes an implementation of unequal power divider with 1:3 and 1:4 splitting ratio in multi-section structure using CPW and offset coupled transmission line. The power divider consists of a multi-section transmission line and a circuit with parallel capacitors and resistors. A multi-section transmission line was implemented by decomposing a ${\lambda}/4$ single transmission line terminated by an arbitrary impedance and converging it with a multi-section transmission line shorter than $90^{\circ}$ electrical length, and RC parallel circuits were connected between transmission lines to obtain reflection coefficient of output port and isolation characteristics between the output port. In this way, it was confirmed that the transmission lines at the unequal power divider designed at 2 GHz were shorter than ${\lambda}/4$ and implemented at least 27% less than the conventional ones, and that the broadband characteristics could be obtained.

본 논문은 1:3과 1:4 분배 비율을 갖는 비대칭 분배기를 CPW와 offset 결합 전송선로를 이용하여 다단 구조로 구현한 것이다. 이 분배기는 다단 구조의 전송선로와 캐패시터와 저항이 병렬로 연결된 회로로 구성되어 있다. 다단 전송선로는 임의의 임피던스로 종단된 ${\lambda}/4$ 단일 전송선로를 분해하여 그것을 $90^{\circ}$ 전기적 길이보다 짧은 다단 전송선로로 정합시키는 방법으로 구현하였고, RC 병렬회로는 출력 포트의 반사계수와 출력 포트 사이의 고립 특성을 얻기 위해서 전송선로 사이에 연결하였다. 이러한 방법으로 2 GHz에서 설계된 전력분배기는 각 단의 전송선로는 ${\lambda}/4$보다 짧게 구현되어 기존 것 보다 최소 27% 작게 구현하였고, 광 대역 특성을 얻을 수 있음을 확인하였다.

Keywords

References

  1. M. M. Honari, L. Mirzavand, R. Mirzavand, A. Abdipour, and P. Mousavi, “Theoretical design of broadband multisection Wilkinson power dividers with arbitrary power split ratio,” IEEE Transaction on Components, Packaging and Manufacturing Technology, Vol. 6, No. 4, pp. 605-612, Apr. 2016. https://doi.org/10.1109/TCPMT.2016.2518581
  2. Y. Sun and A. P. Freundorfer, “Broadband folded Wilkinson power combiner/splitter,” IEEE Microwave Wireless Components Letters, Vol. 14, No. 6, pp. 295-297, Jun. 2004. https://doi.org/10.1109/LMWC.2003.821491
  3. Z. X. Du, X. Y. Zhang, K. X. Wang, H. L. Kao, X. L. Zhao, and X. H. Li, “ Unequal Wilkinson power divider with reduced arm length for size miniaturization,” IEEE Transaction on Components, Packaging and Manufacturing Technology, Vol. 6, No. 2, pp. 282-289, Feb. 2016. https://doi.org/10.1109/TCPMT.2015.2513763
  4. H. Oraizi and A.R. Sharifi, “Design and optimization of broadband asymmetrical multisection Wilkinson power divider,” IEEE Transaction on Microwave Theory and Techniques, Vol. 54, No. 5, pp. 2220-2231, May 2006. https://doi.org/10.1109/TMTT.2006.872786
  5. M. M. Honari, R. Mizavand, P. Mousavi, and A. Abdipour, " Class of miniaturized/ arbitrary power division ratio couplers with improved design flexibility," IET Microwaves, Antennas & Propagation, Vol. 9, Iss. 10, pp. 1066-1073, 2015. https://doi.org/10.1049/iet-map.2015.0009
  6. I. Sakagami, X. Wang, K. Takahashi, and S. Okamura, “ Generalized two-way two-section dual-band Wilkinson power divider with two absorption resistors and its miniaturization,” IEEE Transaction on Microwave Theory and Techniques, Vol. 59, No. 11, pp. 2833-2847, Nov. 2011. https://doi.org/10.1109/TMTT.2011.2160086
  7. P.H. Deng and Y.T. Chen, “New Wilkinson power dividers and their integration applications to four-way and filtering dividers,” IEEE Transaction on Components, Packaging and Manufacturing Technology, Vol. 4, No. 11, pp. 1828-1837, Nov. 2014. https://doi.org/10.1109/TCPMT.2014.2348571
  8. Y. C. Yoon, Y. Kim, “Miniaturized Multi-section Power Divider with Parallel RC Isolation Circuit,” Journal of Electromagnetic Engineering and Science, Vol. 19, No. 3, pp. 147-152, Jul. 2019. https://doi.org/10.26866/jees.2019.19.3.147
  9. C. Li and D. S. Ricketts, "A low-loss, impedance matched ${\lambda}/4$ compact T-junction power combiner," Proceeding of the 7th European Microwave Integrated Circuit Conference, Amsterdam, Netherlands, pp.147-150, Oct. 2012.
  10. T. Zhang, W. Che, and H. Chen, “Miniaturized multiway unequal power divider with controllable characteristic impedances,” IEEE Microwave Wireless Components Letters, Vol. 27, No. 12, pp. 1062-1064, Dec. 2017. https://doi.org/10.1109/LMWC.2017.2750421
  11. H. R. Ahn, “Complex impedance transformers consisting of only transmission-line sections,” IEEE Transaction on Microwave Theory and Techniques, Vol. 60, No. 7, pp. 2073-2084, Jul. 2012. https://doi.org/10.1109/TMTT.2012.2197022
  12. B. C. Wadell, Transmission Line Design Handbook, 1st ed. Norwood, MA: Artech House, 1991.
  13. C. Jianxin, Double-sided parallel-strip line circuit analysis and applications to microwave component designs, Ph. D. dissertation, City University of Hong Kong, 2008.