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Progress In Electromagnetics Research
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HIGH PERFORMANCE MULTI-SECTION CORRUGATED SLOT-COUPLED DIRECTIONAL COUPLERS

By A. Moscoso-Martir, I. Molina-Fernandez, and A. Ortega-Monux

Full Article PDF (385 KB)

Abstract:
In this paper a robust technique for the design of high performance directional couplers is proposed. It combines the advantages of wiggly coupled lines and slot-coupled lines but overcomes their main limitations. The key to this novel technique is a new corrugated slot that allows perfect compensation of the even and odd mode phase velocities and can be easily designed using Bloch-Floquet theory, yielding outstanding performance. To demonstrate the validity of the proposed technique, the design of two different wideband directional couplers is presented. The first design consists of a 10 dB asymmetric directional coupler with a one decade bandwidth (1.2-12 GHz) that exhibits a coupling accuracy of 10±0.6 dB, a return loss better than 23 dB and an isolation better than 28 dB across the complete frequency band. The second design consists of a symmetric quadature hybrid that operates over the complete UWB band (3.1 to 10.6 GHz) showing an amplitude and phase imbalance between the output ports lower than ±0.5 dB and ±0.7°, respectively.

Citation:
A. Moscoso-Martir, I. Molina-Fernandez, and A. Ortega-Monux, "High Performance Multi-Section Corrugated Slot-Coupled Directional Couplers," Progress In Electromagnetics Research, Vol. 134, 437-454, 2013.
doi:10.2528/PIER12111504
http://www.jpier.org/PIER/pier.php?paper=12111504

References:
1. Lopez-Berrocal, , B., , J. de-Oliva-Rubio, E. Marquez-Segura, A. Moscoso-Martir, and I. Molina-Fernandez, "High performance 1.8{18 GHz 10-dB low temperature co-fired ceramic directional coupler," Progress In Electromagnetics Research, Vol. 104, 99-112, 2010..
doi:10.2528/PIER10040704

2. Kim, C.-S., , S.-W. Lee, P.-Y. Lee, H.-S. Kim, J.-S. Park, and D. Ahn, "Design of re-entrant mode microstrip directional coupler for high directivity performance," IEEE Asia-Pacific Microwave Conference, 1286-1289, 2009.

3. Sharma, , R. Y., , T. Chakravarty, S. Bhooshan, and A. B. Bhattacharyya, "Design of a novel 3 dB microstrip backward wave coupler using defected ground structure," Progress In Electromagnetvics Research, Vol. 65, 261-273, 2006.
doi:10.2528/PIER06100502

4. Phromloungsri, , R., M. Chongcheawchamnan, and I. D. Robertson, "Inductively compensated parallel coupled microstrip lines and their applications, ," IEEE Trans. on Microw. Theory and Tech., Vol. 54, No. 9, 2006.
doi:10.1109/TMTT.2006.881026

5. Moradian, M. and M. Khalaj-Amirhosseini, "Improvement the characteristics of the microstrip parallel coupled line coupler by means of grooved substrate ," Progress In Electromagnetics Research M, Vol. 3, 205-215, 2008.
doi:10.2528/PIERM08071205

6. Pelaez-Perez, , A. M., , P. Almorox-Gonzalez, J. I. Alonso, and J. Gonzalez-Martin, "Ultra-broadband directional couplers using microstrip with dielectric overlay in millimeter-wave band," Progress In Electromagnetics Research, Vol. 117, 495-509, 2011.

7. Chen, , H.-C. and C.-Y. Chang, "Modified vertically installed planar couplers for ultrabroadband multisection quadrature hybrid," IEEE Microw. and Wireless Compon. Lett., Vol. 16, No. 8, 446-448, 2006.
doi:10.1109/LMWC.2006.879491

8. Gruszczynski, , S. and K. Wincza, "Broadband rat-race couplers with coupled-line section and impedance transformers," IEEE Microw. Wireless Compon. Lett.,, Vol. 22, No. 1, 22-24, 2012.
doi:10.1109/LMWC.2011.2177649

9. Izydorczyk, , J., "Equivalent circuits for nonuniform transmission line simulation," ACES Journal,, Vol. 25, No. 9, 764-779, 2010.

10. Khalaj-Amirhosseini, , M., "Analysis of coupled or single nonuni-form transmission lines using step-by-step numerical integration," Progress In Electromagnetics Research, Vol. 58, 187-198, 2006.

11. Uysal, S. , A. H. Aghvami, and , "Synthesis, design an construction of ultra-wide-band nouniform quadrature directional coupler in inhomogeneous media," IEEE Trans. on Microw. Theory and Tech., Vol. 37, No. 6, 969-976, 1989.
doi:10.1109/22.25398

12. Podell, A., "A high directivity microstrip coupler technique," IEEE MITS Int. Microwave Symp. Dig., 33-36, 1970.

13. Lau, , D. K. Y., , S. P. Marsh, L. E. Davis, and R. Sloan, "Simplied design technique for high-performance microstrip multisection couplers," IEEE Trans. on Microw. Theory and Tech., Vol. 46, No. 12, 2507-2517, 1998.
doi:10.1109/22.739241

14. Muller, , J. , A. F. Jacob, and , "Advanced characterization and design of compensated high directivity quadrature coupler ," IEEE MITS Int. Microwave Symp. Dig., 724-727, 2010.

15. Tanaka, , T., K. Tsunoda, and M. Aikawa, "Slot-coupled directional couplers between double-sided substrate microstrip lines and their applications," IEEE Trans. on Microw. Theory and Tech., Vol. 36, No. 12, 1752-1757, 1988.
doi:10.1109/22.17410

16. Moscoso-Martir, , A., , J. G.Wangemert-Perez, I. Molina-Fernandez, and E. Marquez-Segura, "Slot-coupled multisection quadrature hybrid for UWB applications," IEEE Microw. Wireless and Compon. Lett., Vol. 19, No. 3, 143-145, 2009.
doi:10.1109/LMWC.2009.2013700

17. Abbosh, A. M. , M. E. Bialkowski, and Design of ultra wideband, "Design of ultra wideband 3 dB quadrature microstrip/slot coupler," Microw. Opt. Tech. Lett., Vol. 49, No. 9, 2101-2103, 2007.
doi:10.1002/mop.22674

18. Nedil, , M. , T. A. Denidni, and , "Analysis and design of an ultra wideband directional coupler," Progress In Electromagnetics Research B, Vol. 1, 291-305, 2008.
doi:10.2528/PIERB07110704

19. Moscoso-Martir, , A. , I. Molina-Fernandez, and , "Six-port junction with complete UWB band coverage in multilayer technology," IEEE European Microwave Conference (EuMC),, 655-658, 2011..

20. Levy, , R., "Tables for asymmetric multi-element coupled transmission-line directional couplers ," IEEE Trans. on Microw. Theory and Tech., Vol. 12, 275-279, 1964.
doi:10.1109/TMTT.1964.1125809

21. Cristal, , E. G. , L. Young, and , "Theory and tables of optimum symmetrical TEM-mode coupled-transmission-line directional couplers," IEEE Trans. on Microw. Theory and Tech., Vol. 13, No. 5, 544-558, 1965.
doi:10.1109/TMTT.1965.1126050

22. Monghia, , R., I. Bahl, and P. Bhartia, RF and Microwaves Coupled-line Circuits,, Artech House, 1999.

23. Bockelman, , D. E. , W. R. Eisenstadt, and , "Combined differential and common-mode scattering parameters," IEEE Trans. on Microw. Theory and Tech., Vol. 43, No. 7, 1530-1539, 1995.
doi:10.1109/22.392911

24. Fan, , W., , A. Lu, L. Wai, and B. Lok, "Mixed-mode S-parameter characterization of differential structures," 5th Conference Electronics Packaging Technology (EPTC 2003), 533-537, 2003.
doi:10.1109/EPTC.2003.1271579

25. Wong, , M. F., , V. F. Hanna, O. Picon, and H. Baudrand, "Analysis and design of slot-couplers between double-sided substrate microstrip lines ," IEEE Trans. on Microw. Theory and Tech., Vol. 29, No. 12, 2123-2129, 1991.
doi:10.1109/22.106554

26. Pozar, , D. M., Microwave Engineering Reading, , Addison-Wesley, 1990.

27. Collin, , R. E., , Foundations for Microwave Engineering,, 2nd Ed., McGraw-Hill, , New York, , 1992.


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