Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 9
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.9.11
UDC 621.396
Miniaturization of the 4x4 Butler matrix
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 September 22, 2020
Abstract. An approach to miniaturization of a 4x4 Butler matrix assembled on compact two-loop bridges with an operating frequency of 1 GHz is investigated. The miniaturization procedure itself consists in simply replacing the quarter-wave segments with compact structures. Using the program, such structures were obtained for the desired characteristics. The proposed Butler matrix was fabricated and measured. The die area has been reduced by 55%.
Key words: microstrip line, miniaturization, Butler matrix.
References
1. 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.
2. 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
3. Kuo T.N., Lin Y.S., Wang C.H., Chen C.H. A compact LTCC branch-line coupler using modified-T equivalent-circuit model for transmission line. IEEE Microw. Wireless Compon. Lett. 2006. Vol.16. No.2. P.90–92. https://doi.org/10.1109/LMWC.2005.863194
4. 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
5. 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
6. 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.
7. 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
8. Chang W.-S., Chang C-Y. A High Slow-Wave Factor Microstrip Structure With Simple Design Formulas and Its Application to Microewave Circuit Design. IEEE Trans. Microw. Theory Tech. 2012. Vol. 60. No.11. P. 3376-3383.
9. 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
10. 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.
11. Zhu J., Zhou Y., Liu J. Miniaturization Of Broadband 3-Db Branch-Line Coupler. Progress in Electromagnetics Research Letters. 2011. Vol. 24. P. 169-176. https://doi.org/10.2528/PIERL11051706
12. 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. https://doi.org/10.1109/TMTT.2006.880650
13. Hung, L.Q. Directional coupler on compact structures. International Conference on High-Tech and Innovations in Research and Manufacturing, HIRM 2019. May 2019. Vol. 1353. https://doi.org/10.1088/1742-6596/1353/1/012074
14. Hung L.Q. Description of a Miniaturization Tool for a Directional Coupler on a Microwave Substrate. 1st International Conference on Control Systems, Mathematical Modelling, Automation and Energy Efficiency, SUMMA 2019. Nov. 2019. P.482-485. https://doi.org/10.1109/SUMMA48161.2019.8947612
For citation:
Luu Quang Hung. Miniaturization of the 4x4 Butler matrix. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.9. https://doi.org/10.30898/1684-1719.2020.9.11 (In Russian)