Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2021. No. 1
Contents

Full text in Russian (pdf)

Russian page

 

DOI https://doi.org/10.30898/1684-1719.2021.1.2

UDC 621.391

 

Compact power dividers

 

Luu Quang Hung

Vietnam Maritime University, Department of Electronics and Telecommunications, Faculty of Electric - Electronic Engineering, 484 Lach Tray str, Le Chan dist, Hai Phong, Viet Nam

 

The paper s received on December 15, 2020.

 

Abstract. This article describes a range of compact power dividers - quarter-wave directional couplers, ring divider and Wilkinson coupler. Power dividers in their standard design can take up a significant area at low frequencies. This can adversely affect their use in some applications. Therefore, to eliminate this drawback, instead of the usual sections, we used artificial transmission lines, which consist of inductance and capacitance in a microstrip design. Using this approach, constructions of compact divisors were obtained. So the directional coupler on such lines has an area of 78.8% less than that of a conventional design, a ring divider by 80.3% and a Wilkinson coupler by 67.7%. For all compact designs, a negative point should be noted - this is a narrowing of the frequency band.

Key words: material, microstrip line, dielectric, substrate, miniaturization.

References

1.     Liao S.-S., Peng J.-T. Compact planar microstrip branch-line couplers using the quasi-lumped elements approach with nonsymmetrical and symmetrical T-shaped structure. IEEE Trans. Microw. Theory Tech. 2006. Vol.54. P.3508-3514.

2.     Letavin D.A. Miniature microstrip branch line coupler with folded artificial transmission lines. AEU – International Journal of Electronics and  Communications. 2019. Vol.99. P.8-13. https://doi.org/10.1016/j.aeue.2018.11.016.

3.     Letavin D.A. Compact branch-line coupler based on an inductor and a u-shaped capacitor. 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices, EDM 2018. 2018. P.195-198. https://doi.org/10.1109/EDM.2018.8435096.

4.     Eccleston K.W., Ong S.H.M. Compact planar microstripline branch-line and rat-race couplers. IEEE Trans. Microw. Theory Tech. 2003. Vol.51. No.10. P.2119-2125. https://doi.org/10.1109 / TMTT.2003.817442

5.     Liao S.-S., Sun P.-T., Chin N.-C., Peng J.-T. A novel compact-size branch-line coupler. IEEE Microw. Wireless Compon.Lett. 2005. Vol.15. P. 588-590. https://doi.org/10.1109 / LMWC.2005.855378

6.     Letavin D.A. Compact crossover based on low-pass filter. 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices, EDM 2018. July 2018. P.192-194. https://doi.org/10.1109/EDM.2018.8434978.

7.     Letavin D.A. Compact microstrip three-loop coupler. 2017 International Applied Computational Electromagnetics Society Symposium.  Italy, ACES 2017, Ma. 2017. https://doi/org/10.23919/ROPACES.2017.7916036.

8.     Letavin D.A. Miniature branch-line coupler structure analysis. 18th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices, EDM 2017. July 2018. P.99-101.

     https://doi.org/10.1109/EDM.2017.7981717.

9.     Wang J., Wang B.Z., Guo Y.-X., Ong L.-C., Xiao S. A compact slow-wave microstrip branch-line coupler with high performance. IEEE Microw. Wireless Compon.Lett. 2007. Vol.17. P.501-503.

     https://doi.org/10.1109/LMWC.2007.899307

10.Letavin D.A. Compact dual-frequency branch-line coupler using artificial transmission lines. 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices, EDM 2018. July 2018. P.185-188. https://doi.org/10.1109/EDM.2018.8434988.

11.Letavin D.A. Two methods for miniaturization of stub quadrature couplers. Journal of Communications Technology and Electronics. 2018. Vol.63. P.933-935. https://doi.org/10.1134/S1064226918080107

12.Ghali H., Moselhy T.A. Miniaturized fractal rat-race, branch-line, and coupler-line hybrids. IEEE Trans. Microw. Theory Tech. 2004. Vol. 52. P.2513-2520.

13.Letavin D.A. Five-stub directional device with substantially reduced overall dimensions. 2018 IEEE Radio and Antenna Days of the Indian Ocean, RADIO 2018. https://doi.org/10.23919/RADIO.2018.8572386.

14. Tang C.W., Chen M.-G. Synthesizing microstrip branch-line coupler with predetermined compact size and bandwidth. IEEE Trans. Microw. Theory Tech., 2007. Vol.55. P.1926-1934. https://doi.org/10.1109 / TMTT.2007.904331

 

For citation:

Luu Quang Hung. Compact power dividers. Zhurnal Radioelektroniki [Journal of Radio Electronics]. 2021. No.1. https://doi.org/10.30898/1684-1719.2021.1.2  (In Russian)