Vol. 64

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2016-05-10

A Miniaturized 90° Schiffman Phase Shifter with Open-Circuited Trans-Directional Coupled Lines

By Yuan Cao, Zhongbao Wang, Shao-Jun Fang, and Yuan'an Liu
Progress In Electromagnetics Research C, Vol. 64, 33-41, 2016
doi:10.2528/PIERC16030401

Abstract

A symmetrical open-circuited λ/4 trans-directional (TRD) coupled line is proposed to replace the 3λ/4 reference line of an existing 90° Schiffman phase shifter for miniaturization. The coupling factor of the TRD coupled line can be used to control input matching and phase ripple, which adds an additional optimization variable to the design of a Schiffman phase shifter. There are two transmission zeros near the operational frequency band, which can be used to suppress adjacent frequency interferences and accompanies two phase leaps so that the realizable bandwidth is about 28~42%. Simulated and measured results are given to verify the proposed method.

Citation


Yuan Cao, Zhongbao Wang, Shao-Jun Fang, and Yuan'an Liu, "A Miniaturized 90° Schiffman Phase Shifter with Open-Circuited Trans-Directional Coupled Lines," Progress In Electromagnetics Research C, Vol. 64, 33-41, 2016.
doi:10.2528/PIERC16030401
http://www.jpier.org/PIERC/pier.php?paper=16030401

References


    1. Liu, Q., Y. Liu, Y. Wu, M. Su, and J. Shen, "Compact wideband circularly polarized patch antenna for CNSS applications," IEEE Antennas Wirel. Propag. Lett., Vol. 12, 1280-1283, 2013.
    doi:10.1109/LAWP.2013.2283218

    2. Sun, L., B.-H. Sun, H. Wu, J. Yuan, and W. Tang, "Broadband, wide beam circularly polarized antenna with a novel matching structure for satellite communications," Progress In Electromagnetics Research C, Vol. 59, 159-166, 2015.
    doi:10.2528/PIERC15101101

    3. Han, R. C., S. S. Zhong, and J. Liu, "Broadband circularly polarised dielectric resonator antenna fed by wideband switched line coupler," Electron. Lett., Vol. 50, No. 10, 725-726, 2014.
    doi:10.1049/el.2014.0809

    4. Schiffman, B. M., "A new class of broad-band microwave 90-degree phase shifters," IRE Trans. Microwave Theory Tech., Vol. 6, No. 2, 232-237, 1958.
    doi:10.1109/TMTT.1958.1124543

    5. Lee, C. H. and Y. H. Chang, "An alternative implementation for fabricating a Schiffman phase shifter," Microwave Opt. Technol. Lett., Vol. 55, No. 1, 9-12, 2013.
    doi:10.1002/mop.27266

    6. Guo, Y. X., Z. Y. Zhang, and L. C. Ong, "Improved wide-band Schiffman phase shifter," IEEE Trans. Microwave Theory Tech., Vol. 54, No. 3, 1196-1200, 2006.
    doi:10.1109/TMTT.2005.864105

    7. Rhee, S., "Broadband Schiffman phase shifter using coupled suspended lines with tuning septums," Microwave Opt. Technol. Lett., Vol. 55, No. 5, 1036-1038, 2013.
    doi:10.1002/mop.27494

    8. Zhang, Z., Y.-C. Jiao, S.-F. Cao, X.-M. Wang, and F.-S. Zhang, "Modified broadband Schiffman phase shifter using dentate microstrip and patterned ground plane," Progress In Electromagnetics Research Letters, Vol. 24, 9-16, 2011.
    doi:10.2528/PIERL11041406

    9. Donelli, M., M. Rukanuzzaman, and C. E. Saavedra, "A methodology for the design of microwave systems and circuits using an evolutionary algorithm," Progress In Electromagnetics Research M, Vol. 31, 129-141, 2013.
    doi:10.2528/PIERM13041607

    10. Donelli, M., C. Saavedra, and M. D. Rukanuzzaman, "Design and optimization of a broadband X-band bidirectional amplifier," Microwave Opt. Technol. Lett., Vol. 55, No. 8, 1730-1735, 2013.
    doi:10.1002/mop.27712

    11. Azaro, R., G. Boato, M. Donelli, A. Massa, and E. Zeni, "Design of a prefractal monopolar antenna for 3.4–3.6GHz Wi-Max band portable devices," IEEE Antennas Wirel. Propag. Lett., Vol. 5, 116-119, 2006.
    doi:10.1109/LAWP.2006.872427

    12. Donelli, M. and P. Febvre, "An inexpensive reconfigurable planar array for Wi-Fi applications," Progress In Electromagnetics Research C, Vol. 28, 71-81, 2012.
    doi:10.2528/PIERC12012304

    13. Liu, Q., Y. Liu, J. Shen, S. Li, C. Yu, and Y. Lu, "Wideband single-layer 90◦ phase shifter using stepped impedance open stub and coupled-line with weak coupling," IEEE Microwave Wireless Compon. Lett., Vol. 24, No. 3, 176-178, 2014.
    doi:10.1109/LMWC.2013.2295212

    14. Liu, Q., H. Liu, and Y. Liu, "Compact ultra-wideband 90◦ phase shifter using short-circuited stub and weak coupled line," Electron. Lett., Vol. 50, No. 20, 1454-1456, 2014.
    doi:10.1049/el.2014.2271

    15. Sorn, M., R. Lech, and J. Mazur, "Simulation and experiment of a compact wideband 90◦ differential phase shifter," IEEE Trans. Microwave Theory Tech., Vol. 60, No. 3, 494-501, 2012.
    doi:10.1109/TMTT.2011.2175244

    16. Wang, Y., M. E. Bialkowski, and A. M. Abbosh, "Double microstrip-slot transitions for broadband ±90◦ microstrip phase shifters," IEEE Microwave Wireless Compon. Lett., Vol. 22, No. 2, 58-60, 2012.
    doi:10.1109/LMWC.2011.2181348

    17. Eom, S. Y. and H. K. Park, "New switched-network phase shifter with broadband characteristics," Microwave Opt. Technol. Lett., Vol. 38, No. 4, 255-257, 2003.
    doi:10.1002/mop.11030

    18. Zheng, S. Y., W. S. Chan, and K. F. Man, "Broadband phase shifter using loaded transmission line," IEEE Microwave Wireless Compon. Lett., Vol. 20, No. 9, 498-500, 2010.
    doi:10.1109/LMWC.2010.2050868

    19. Yeung, S. H., Q. Xue, and K. F. Man, "Broadband 90◦ differential phase shifter constructed using a pair of multisection radial line stubs," IEEE Trans. Microwave Theory Tech., Vol. 60, No. 9, 2760-2767, 2012.
    doi:10.1109/TMTT.2012.2204899

    20. Zhang, W., Y. Liu, Y. Wu, W. Wang, M. Su, and J. Gao, "A modified coupled-line Schiffman phase shifter with short reference line," Progress In Electromagnetics Research C, Vol. 54, 17-27, 2014.

    21. Shie, C. I., J. C. Cheng, S. C. Chou, and Y. C. Chiang, "Transdirectional coupled-line couplers implemented by periodical shunt capacitors," IEEE Trans. Microwave Theory Tech., Vol. 57, No. 12, 2981-2988, 2009.
    doi:10.1109/TMTT.2009.2034219

    22. Pozar, D. M., Microwave Engineering, 4 Ed., John Wiley & Sons, New York, 2012.