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Generalized dual-band branch-line coupler with arbitrary power division ratios

Published online by Cambridge University Press:  26 June 2015

Seyed-Ali Malakooti ,
Mohsen Hayati ,
Veria Fahimi  and
Behnam Afzali
Seyed-Ali Malakooti
Affiliation:
Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
Mohsen Hayati*
Affiliation:
Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran Electrical Engineering Department, Faculty of Engineering, Razi University, Kermanshah, Iran
Veria Fahimi
Affiliation:
Electrical Engineering Department, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
Behnam Afzali
Affiliation:
Department of Electrical Engineering, Technical and Vocational College of Kermanshah, Technical and Vocational University, Kermanshah, Iran
*
Corresponding author: M. Hayati Email: Mohsen_hayati2@yahoo.com
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Abstract

In this paper, a novel design of generalized dual-band quadrature hybrid with arbitrary power division ratios is presented and investigated. This coupler has a simple structure and can cover a wide range of power division ratios at the two designated frequencies. Exact closed-form equations are derived based on the even–odd-mode analysis method. The proposed structure offers some special features, encompassing: (1) a generalized structure of some recently published papers; (2) isolation in vertical and horizontal directions in the two-dimensional structure; (3) the same sign of the output phase difference for the structure with horizontal isolation and the opposite sign for the structure with vertical isolation; (4) large power division ratios for both vertical and horizontal isolation conditions; (5) large frequency band ratio for both vertical and horizontal isolation conditions; (6) capability of the bandwidth improvement by exploiting coupled lines with small coupling coefficient. For demonstration, a microstrip implementation of a 16:1 dual-band coupler working on 2.45/5.8 GHz is developed. Consistency between simulation and measurement results justifies the proposed design method and its equations.

Keywords

Passive components and circuitsCircuit design and applications
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 7 , November 2016 , pp. 1051 - 1059
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

REFERENCES

[1] Zhang, H.; Chen, K.J.: A stub tapped branch-line coupler for dualband operations. IEEE Microw. Wireless Compon. Lett., 17 (2) (2007), 106–108.CrossRefGoogle Scholar
[2] Cheng, K.-K.M.; Wong, F.-L.: A novel approach to the design and implementation of dual-band compact planar 90 branch-line coupler. IEEE Trans. Microw. Theory Tech., 52 (11) (2004), 2458–2463.Google Scholar
[3] Chin, K.-S.; Lin, K.-M.; Wei, Y.-H.; Tseng, T.-H.; Yang, Y.-J.: Compact dual-band branch-line and rat-race couplers with stepped-impedance-stub lines. IEEE Trans. Microw. Theory Tech., 58 (5) (2010), 1213–1221.CrossRefGoogle Scholar
[4] Kim, H.; Lee, B.; Park, M.-J.: Dual-band branch-line coupler with port extensions. IEEE Trans. Microw. Theory Tech., 58 (3) (2010), 651–655.Google Scholar
[5] Taravati, S.; Khalaj-Amirhossieni, M.: Compact dual-band stubless branch-line coupler. J. Electromagn. Waves Appl., 26 (10) (2012), 1323–1331.Google Scholar
[6] Hsu, C.-L.: Dual-band branch line coupler with large power division ratios, in Proc. Asia-Pacific Microw. Conf., 2009, 1–4.Google Scholar
[7] Yu, C.-H.; Pang, Y.-H.: Dual-band unequal-power quadrature branch-line coupler with coupled lines. IEEE Microw. Wireless Compon. Lett, 23 (1) (2013), 10–12.Google Scholar
[8] Yeung, L.K.: A compact dual-band 90° coupler with coupled-line sections. IEEE Trans. Microw. Theory Tech, 59 (9) (2011), 2227–2232.Google Scholar
[9] Yu, J.-H.; Cheng, J.-C.; Pang, Y.-H.: Design of a dual-band miniaturized 90° branch-line coupler with coupled lines, in Proc. Asia-Pacific Microw. Conf., December 2011, 21–24.Google Scholar
[10] Park, M.-J.; Lee, B.: Dual-band, cross coupled branch line coupler. IEEE Microw. Wireless Compon. Lett., 15 (10) (2005), 655–657.Google Scholar
[11] Zheng, S.Y.; Yeung, S.H.; Chan, W.S.; Man, K.F.; Leung, S.H.; Xue, Q.: Dual-band rectangular patch hybrid coupler. IEEE Trans. Microw. Theory Tech, 56 (7) (2008), 1721–1728.Google Scholar
[12] Park, M.-J.: Dual-band, unequal length branch-line coupler with center-tapped stubs. IEEE Microw. Wireless Compon. Lett., 19 (10) (2009), 617–619.Google Scholar
[13] Hsu, C.-L.; Kuo, J.-T.; Chang, C.-W.: Miniaturized dual-band hybrid couplers with arbitrary power division ratios. IEEE Trans. Microw. Theory Tech., 57 (1) (2009), 149–156.Google Scholar
[14] Ha, J.; Lee, S.; Park, J.H.; Lee, Y.: Dual-band branch-line couplers with three parallel lines for arbitrary power-split ratios. J. Electromagn. Waves Appl., 27 (10) (2013), 1220–1229.Google Scholar
[15] Li, B.; Wu, W.: Compact dual-band branch-line coupler with 20:1 power dividing ratio. J. Electromagn. Waves Appl., 25 (4) (2011), 607–615.Google Scholar
[16] Zhang, L.C.; Zhou, L.; Jiang, W.: A compact dual-band coupler with arbitrary power dividing ratio using broadside-coupled microstrip. J. Electromagn. Waves Appl., 27 (2) (2013), 140–148.Google Scholar
[17] Collin, R.E.: Foundation for Microwave Engineering, 2nd ed., IEEE Press, New York, 1992.Google Scholar
[18] Toker, C.; Saglam, M.; Ozme, M.: Branch-line couplers using unequal line lengths. IEEE Trans. Microw. Theory Tech., 49 (4) (2001), 718–721.Google Scholar
[19] Zheng, S.Y.; Wu, Y.; Li, Y.; Liu, Y.; Long, Y.: Dual-band hybrid coupler with arbitrary power division ratios over the two bands. IEEE Trans. Compon. Packag. Manuf. Technol., 4 (8) (2014), 1347–1358.Google Scholar
[20] Wu, Y.; Zheng, S.Y.; Leung, S.-W.; Liu, Y.; Xue, Q.: An analytical design method for a novel dual-band unequal coupler with four arbitrary terminated resistances. IEEE Trans. Ind. Electron., 61 (10) (2014), 5509–5516.Google Scholar
[21] Chi, P.-L.; Chang, W.-Y.: Compact and dual-band arbitrary power-split quadrature coupler using the composite right/left-handed transmission lines, in Microwave Conf. (APMC), Asia-Pacific, 2014, 16–18.Google Scholar
[22] Gong, J.-Q.; Jiang, J.-B.; Liang, C.-H.; Wu, B.: Compact dual-band ISCRLH TL based hybrid couplers with arbitrary power division ratios, in 2012 Int. Conf. on Microwave and Millimeter Wave Technology (ICMMT), 2012, 4, 1–3.Google Scholar