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Miniaturized branch-line coupler based on slow-wave microstrip lines

Published online by Cambridge University Press:  22 August 2018

H. Alhalabi ,
H. Issa Open the ORCID record for H. Issa [Opens in a new window] ,
E. Pistono ,
D. Kaddour ,
F. Podevin ,
A. Baheti ,
S. Abouchahine  and
P. Ferrari
H. Alhalabi
Affiliation:
Beirut Arab University, Debbieh, Lebanon
H. Issa*
Affiliation:
Beirut Arab University, Debbieh, Lebanon
E. Pistono
Affiliation:
Univ. Grenoble Alpes, Grenoble INP, CNRS, RFIC-lab, F-38000 Grenoble, France
D. Kaddour
Affiliation:
Univ. Grenoble Alpes, Grenoble INP, CNRS, LCIS-lab, 26000 Valence, France
F. Podevin
Affiliation:
Univ. Grenoble Alpes, Grenoble INP, CNRS, RFIC-lab, F-38000 Grenoble, France
A. Baheti
Affiliation:
Alten GmbH
S. Abouchahine
Affiliation:
Beirut Arab University, Debbieh, Lebanon
P. Ferrari
Affiliation:
Univ. Grenoble Alpes, Grenoble INP, CNRS, RFIC-lab, F-38000 Grenoble, France
*
Author for correspondence: H. Issa, E-mail: h.issa@bau.edu.lb
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Abstract

This paper presents a miniaturized 3-dB branch-line coupler based on slow-wave microstrip transmission lines. The miniaturized coupler operating at 2.45 GHz is designed and implemented on a double-layer printed circuit board substrate with blind metallic vias embedded in the lower substrate layer providing the slow-wave effect. Based on this concept, a 43% size miniaturization is achieved as compared with a classical microstrip branch-line coupler prototype. The measured S parameters present a return loss of 25.5 dB and an average insertion loss equal to 0.05 dB at the operating frequency.

Keywords

Branch-line couplerEM field theorypassive components and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 10 , December 2018 , pp. 1103 - 1106
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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References

1.Ghali, H and Moselhy, TA (2004) Miniaturized fractal rat-race,branch-line and coupled-line hybrids. IEEE Transactions on Microwave Theory and Techniques 52, 2513–2520.Google Scholar
2.Caillet, M, Clenet, M, Sharaiha, A and Antar, YM (2009) A Compact wide-band rat-race hybrid using microstrip lines. IEEE Microwave and Wireless Components Letters 19, 191–193.Google Scholar
3.Jung, SC, Negra, R and Ghannouchi, FM (2008) A design methodology for miniaturized 3-dB branch line hybrid couplers using distributed capacitors printed in the inner area. IEEE Transactions on Microwave Theory and Techniques 56, 2950–2953.Google Scholar
4.Sun, KO, HO, SJ, Yen, CC and Weide, DVD (2005) A compact branch-line coupler using discontinuous lines. IEEE Microwave and Wireless Components Letters 15, 501–503.Google Scholar
5.Niembro, A, Nassereddine, V, Pistono, E, Issa, H, Franc, A-L, Vuong, TP and Ferrari, P (2014) Slow-wave substrate integrated waveguide. IEEE Transactions on Microwave Theory and Techniques 62, 1625–1633.Google Scholar
6.Coulombe, M, Nguyen, HV and Caloz, C (2007) Substrate Integrated Artificial Dielectric (SIAD) structure for miniaturized microstrip circuits. IEEE Antennas and Wireless Propagation Letters 6, 575–579.Google Scholar
7.Serrano, ALC, Franc, A-L, Assis, DP, Podevin, F, Rehder, GP, Corrao, N and Ferrari, P (2014) Modeling and characterization of slow-wave microstrip lines on metallic-nanowire-filled-membrane substrate. Transactions on Microwave Theory and Techniques 62, 3249–3254.Google Scholar
8.ANSYS® HFSS Available at http://www.ansoft.com/products/hf/hfss/.Google Scholar
9.Mangan, AM, Voinigescu, SP, Yang, M-T and Tazlauanu, M (2006) Deembedding transmission line measurements for accurate modeling of IC designs. IEEE Transactions on Electron Devices 53, 235–241.Google Scholar
10.El-Halabi, H, Issa, H, Pistono, E, Kaddour, D, Abou-Chahine, S and Ferrari, P (2017) Compact low-pass stepped impedance filters with enhanced out of band response. Wiley Microwave and Optical Technology Letters, 59, 1791–1800.Google Scholar