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A compact single layer branch-line coupler for ultra-wideband (UWB) applications

Published online by Cambridge University Press:  04 April 2016

Sangeetha Velan  and
Malathi Kanagasabai
Sangeetha Velan*
Affiliation:
Department of Electronics and Communication Engineering, College of Engineering, Guindy Campus, Anna University, Chennai 600 025, India. Phone: +919003237453
Malathi Kanagasabai
Affiliation:
Department of Electronics and Communication Engineering, College of Engineering, Guindy Campus, Anna University, Chennai 600 025, India. Phone: +919003237453
*
Corresponding author:V. Sangeetha Email: [email protected]
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Abstract

This paper presents the design of a compact, planar, single layer, tri-section ultra-wideband (UWB) branch-line (BL) coupler. The prototype offers 10 dB return loss characteristics from 3.1 to 13.7 GHz. Over a major portion of the band, phase imbalance of ±10° is achieved. The method of deploying multi stage impedance feed has been used to achieve improved bandwidth. To enhance the power output through the coupled port throughout the operating band, ring shaped slots have been introduced in the ground plane beneath the series arms. The performance of the fabricated prototype has also been validated experimentally.

Keywords

Passive components and circuitsModelingSimulation and characterizations of devices and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 505 - 508
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

REFERENCES

[1] Federal Communications Commission, Washington, DC, USA: Federal Communications Commission revision of Part 15 of the commission's rules regarding ultra-wideband transmission system from 3.1 to 10.6 GHz. 2002.Google Scholar
[2] Abbosh, A.M.; Bialkowski, M.E.: Design of compact directional couplers for UWB applications. IEEE Trans. Microw. Theory Tech., 55 (2) (2007), 189–194.CrossRefGoogle Scholar
[3] Moscoso-Martir, A.; Wanguemert-Perez, J.G.; Molina-Fernandez, I.; Marquez-Segura, E.: Slot-coupled multisection quadrature hybrid for UWB applications. IEEE Microw. Wireless Compon. Lett., 19 (3) (2009), 143–145.CrossRefGoogle Scholar
[4] Chen, H.-C.; Chang, C.-Y.: Modified vertically installed planar couplers for ultrabroadband multisection quadrature hybrid. IEEE Microw. Wireless Compon. Lett., 16 (8) (2006), 446–448.CrossRefGoogle Scholar
[5] Abbosh, A.M.: Closed-form design method for tight parallel-coupled microstrip coupler with ultra-wideband performance and practical dimensions. Electron. Lett., 47 (9) (2011), 547–549.CrossRefGoogle Scholar
[6] Arriola, W.A.; Lee, J.Y.; Kim, I.S.: Wideband 3 dB branch line coupler based on λ/4 open circuited coupled lines. IEEE Microw. Wireless Compon. Lett., 21 (9) (2011), 486–488.CrossRefGoogle Scholar
[7] Tang, C.-W.; Chen, M.-G.; Lin, Y.-S.; Wu, J.-W.: Broadband microstrip branch-line coupler with defected ground structure. Electron. Lett., 42 (25) (2006), 1458–1460.CrossRefGoogle Scholar
[8] Tang, C.-W.; Tseng, C.-T.; Hsu, K.-C.: Design of wide passband microstrip branch-line couplers with multiple sections. IEEE Trans. Compon. Pack. Manuf. Technol., 4 (7) (2014), 1222–1227.CrossRefGoogle Scholar
[9] Chiu, L.; Xue, Q.: Investigation of a wideband 90° hybrid coupler with an arbitrary coupling level. IEEE Trans. Microw. Theory Tech., 58 (4) (2010), 1022–1029.CrossRefGoogle Scholar
[10] Ali, A.; Aubert, H.; Fonseca, N.; Coccetti, F.: Wideband two-layer SIW coupler: design and experiment. Electron. Lett., 45 (13) (2009), 687–689.CrossRefGoogle Scholar
[11] Chun, Y.-H.; Hong, J.-S.: Compact wide-band branch-line hybrids. IEEE Trans. Microw. Theory Tech., 54 (2) (2006), 704–709.CrossRefGoogle Scholar
[12] Lee, S.; Lee, Y.: Wideband branch-line couplers with single-section quarter-wave transformers for arbitrary coupling levels. IEEE Microw. Wireless Compon. Lett., 22 (1) (2012), 19–21.CrossRefGoogle Scholar
[13] 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