Vol. 83

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2018-04-04

Design of Multilayer and Multiline Microstrip Directional Coupler with Closed Form Relations

By Abdullah Eroglu and Daniel Ronnow
Progress In Electromagnetics Research C, Vol. 83, 1-14, 2018
doi:10.2528/PIERC18012202

Abstract

Design, simulation, implementation and measurement results of multiline and multilayer microstrip directional couplers are given with closed form relations. Step-by-step design procedure reflecting the design practice of directional couplers, which requires only information on coupling level, port impedances and operational frequency, is presented. The method based on the synthesis technique applied in the design of conventional two-line microstrip symmetrical directional couplers is adapted to design multilayer directional couplers with the aid of electromagnetic simulators using parametric analysis with curve fitting method. The proposed design method is compared with the measurement results and accuracy is verified. It has been also shown that the directivity of the couplers designed using the multilayer structure is improved significantly. A method such as the one presented in this paper can be used to design multilayer two-line and three-line directional couplers which can be integrated to the front end of an RFID systems to provide the required isolation between transmitter and receiver and prevent signal leakage due to use of conventional circulators.

Citation


Abdullah Eroglu and Daniel Ronnow, "Design of Multilayer and Multiline Microstrip Directional Coupler with Closed Form Relations," Progress In Electromagnetics Research C, Vol. 83, 1-14, 2018.
doi:10.2528/PIERC18012202
http://www.jpier.org/PIERC/pier.php?paper=18012202

References


    1. Bryant, T. G. and J. A. Weiss, "Parameters of microstrip transmission lines and coupled pairs of microstrip lines," IEEE Trans. Microwave Theory Tech., Vol. 16, No. 12, 1021-1027, Dec. 1968.
    doi:10.1109/TMTT.1968.1126858

    2. Kirschning, M. and R. H. Jansen, "Accurate wide-range design equations for frequency-dependent characteristic of parallel coupled microstrip lines," IEEE Trans. Microwave Theory Tech., Vol. 32, No. 1, 83-90, Jan. 1984.
    doi:10.1109/TMTT.1984.1132616

    3. Akhtarzad, S., T. R. Rowbotham, and P. B. Jones, "The design of coupled microstrip lines," IEEE Trans. Microwave Theory Tech., Vol. 23, No. 7, 486-492, Jun. 1975.
    doi:10.1109/TMTT.1975.1128605

    4. Hinton, J. J., "On design of coupled microstrip lines," IEEE Trans. Microwave Theory Tech., Vol. 28, No. 3, 272, Jul. 1980.
    doi:10.1109/TMTT.1980.1130055

    5. Gupta, K. C., R. Garg, and R. Chadha, Computer-aided Design of Microwave Circuits, Chapter 3, Artech House, Massachusetts, 1981.

    6. Eroglu, A. and J. K. Lee, "The complete design of microstrip directional couplers using the synthesis technique," IEEE Trans. Inst. Meas., Vol. 57, No. 12, 2756-2761, 2008.
    doi:10.1109/TIM.2008.926391

    7. Eroglu, A., RF Circuit Design Techniques for MF-UHF Applications, 1st Ed., CRC Press, Florida, 2013.
    doi:10.1201/b14286

    8. Sheleg, B. and B. E. Spielman, "Broadband directional couplers using microstrip with dielectric overlays," IEEE Trans. Microwave Theory Tech., Vol. 22, 1216-1220, Dec. 1974.
    doi:10.1109/TMTT.1974.1128466

    9. Paolino, D. D., "h4IC overlay coupler design using spectral domain techniques," IEEE Trans. Microwave Theory Tech., Vol. 26, 646-649, Sept. 1978.
    doi:10.1109/TMTT.1978.1129456

    10. Klein, J. L. and K. Chang, "Optimum dielectric overlay thickness for equal even- and odd-mode phase velocities in coupled microstrip circuits," Electronics Letters, Vol. 26, 274276, 1990.

    11. Su, L., T. Itoh, and J. Rivera, "Design of an overlay directional coupler by a M-wave analysis," IEEE Trans. Microwave Theory Tech., Vol. 31, 1017-1022, Dec. 1983.
    doi:10.1109/TMTT.1983.1131655

    12. Podell, A., "high-directivity microstrip coupler technique," 1970 IEEE MTT-S Int. Microwave Symp. Dig., 33-36, 1970.
    doi:10.1109/GMTT.1970.1122761

    13. Uysal, S. and H. Aghvami, "Synthesis, design and construction of ultra-wideband nonuniform directional couplers in inhomogeneous media," IEEE Trans. Microwave Theory Tech., Vol. 37, 969-976, Jun. 1989.
    doi:10.1109/22.25398

    14. Uysal, S., Nonuniform Line Microstrip Directional Couplers and Filter, Artech House, Norwood, 1993.

    15. Phromloungsri, R., M. Chongcheawchamnan, and I. Robertson, "Inductively compensated parallel coupled microstrip lines and their applications," IEEE Trans. Microwave Theory Tech., Vol. 54, No. 9, 3571-3582, Nov. 2006.
    doi:10.1109/TMTT.2006.881026

    16. Lee, S. and Y. Lee, "A design method for microstrip directional couplers loaded with shunt inductors for directivity enhancement," IEEE Trans. Microwave Theory Tech., Vol. 58, No. 4, 994-1002, Apr. 2010.
    doi:10.1109/TMTT.2010.2042544

    17. Yoshioka, H., A. Hirota, H. Ishibashi, N. Yoneda1, and M. Miyazaki, "A directivity enhancement for directional couplers using additional coupled lines," IEICE Electronics Express, Vol. 13, No. 18, 20160317, 2016.
    doi:10.1587/elex.13.20160317

    18. Pourzadi, A., A. R. Attari, and M. S. Majedi, "A directivity-enhanced directional coupler using epsilon negative transmission line," IEEE Trans. Microwave Theory Tech., Vol. 60, No. 11, 3395-3402, Apr. 2012.
    doi:10.1109/TMTT.2012.2216283

    19. Horno, M. and F. Medina, "Multilayer planar structures for high directivity directional coupler design," IEEE Trans. Microwave Theory Tech., Vol. 34, No. 12, 1142-1449, Dec. 1986.
    doi:10.1109/TMTT.1986.1133561

    20. Jaisson, D., "Multilayer microstrip directional coupler with discrete coupling," IEEE Trans. Microwave Theory Tech., Vol. 48, No. 9, 1591-1595, Sept. 2000.
    doi:10.1109/22.869015

    21. Eroglu, A., R. Goulding, P. Ryan, J. Caughman, and D. Rasmussen, "Novel broadband multilayer microstrip directional couplers," 2010 IEEE AP-S, Dig., 1-4, Jul. 2010.

    22. Papatheodorou, S., R. F. Harrington, and J. R. Mautz, "The equivalent circuit of microstrip cross over in a dielectric substrate," IEEE Trans. Microwave Theory Tech., Vol. 38, 135-140, Feb. 1990.
    doi:10.1109/22.46422

    23. Papatheodorou, S., R. F. Harrington, and J. R. Mautz, "Full wave analysis of microstrip cross over," IEEE Trans. Microwave Theory Tech., Vol. 38, 1439-1448, Oct. 1990.

    24. Nedil, M., T. A. Denidni, and L. Talbi, "CPW multilayer slot-coupled directional coupler," Electronics Letters, Vol. 41, No. 12, 706-707, Jun. 2005.
    doi:10.1049/el:20050760

    25. Abdelghani, L. M., T. A. Denidni, and D. M. Nedil, "Ultra-broadband 4 × 4 compact Butler matrix using multilayer directional couplers and phase shifters," 2012 IEEE/MTT-S International Microwave Symposium Digest, 1-3, 2012.

    26. Grys, D.-B., R. Storch, and T. Musch, "A multisection ultra wideband directional coupler in multilayer broadside coupled stripline technology," 2016 German Microwave Conference (GeMiC), 39-42, 2016.
    doi:10.1109/GEMIC.2016.7461550

    27. Park, K. H., et al., "900 MHz passive RFID reader transceiver IC," Proceedings of the 36th European Microwave Conference, 1675-1678, Manchester, UK, Sept. 2006.

    28. Gagnon, A. and A. Eroglu, "Multilayer coupler design and implementation for RFID systems and energy harvesting applications," 2016 IEEE/ACES Digest, 1-2, May 2016.

    29. El-Deeb, N. A., "The calibration and performance of a microstrip six-port rdlectometer," IEEE Trans. Microwave Theory Tech., Vol. 31, No. 7, 509-514, 1983.
    doi:10.1109/TMTT.1983.1131538

    30. Eroglu, A., Introduction to RF Power Amplifier Design and Simulation, 1st Ed., CRC Press, Florida, 2015.
    doi:10.1201/b18677

    31. Abdallah, E. and N. El-Deeb, "On the analysis and design of three coupled microstrip lines," IEEE Trans. Microwave Theory Tech., Vol. 33, No. 11, 1217-1222, Nov. 1985.
    doi:10.1109/TMTT.1985.1133197

    32. Pavlidis, D. and H. L. Hartnagel, "The design and performance of three line microstrip directional couplers," IEEE Trans. Microwave Theory Tech., Vol. 24, No. 10, 631-640, Oct. 1976.
    doi:10.1109/TMTT.1976.1128928

    33. Tripathi, V. K., "On the analysis of symmetrical three line microstrip circuits," IEEE Trans. Microwave Theory Tech., Vol. 25, No. 9, 726-729, Sept. 1977.
    doi:10.1109/TMTT.1977.1129202

    34. Yu, L. and B. Rawat, "Quasi-static analysis of three line microstrip symmetrical coupler on anisotropic substrates," IEEE Trans. Microwave Theory Tech., Vol. 39, No. 8, 1433-1437, Aug. 1991.
    doi:10.1109/22.85422