Vol. 23

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2011-04-20

An Improved Design of Hi-LO Microstrip Lowpass Filter Using Uniplanar Double Spiral Resonant Cells

By Ke Lu, Guang-Ming Wang, Ya-Wei Wang, and Xiong Yin
Progress In Electromagnetics Research Letters, Vol. 23, 89-98, 2011
doi:10.2528/PIERL11032112

Abstract

A novel microstrip resonator, uniplanar double spiral resonant cell (UDSRC) is analytically investigated to access the controllability of its bandstop property and one hi-lo microstrip lowpass filter using UDSRCs with enhanced frequency selectivity and rejection level is also presented. The equivalent circuit corresponding to each part of UDSRC is initially proposed to describe its special bandstop property with two transmission zeros. Furthermore, analytical theories of each circuit element are introduced and the comparison of the calculated results and the fullwave-simulated ones is done to verify the proposed equivalent circuit and the analytical theories. Both the analytical investigation and parametric analysis indicate that the two transmission zeros can be controlled through tuning the primary geometrical parameters. Thus, the given property is utilized by embedding two different UDSRCs in the feed lines of the reference filter. Both the simulated and measured results indicate that the frequency selectivity and rejection level are improved effectively. The frequency selectivity of the fabricated prototype is about 65.8 dB/GHz while the stopband rejection level is more than 10dB from 2.08 GHz to 6.62 GHz. Compared with the reference filter, the performance is improved greatly while the transversal dimension of the feed line is not increased because UDSRCs are completely embedded in the feed lines.

Citation


Ke Lu, Guang-Ming Wang, Ya-Wei Wang, and Xiong Yin, "An Improved Design of Hi-LO Microstrip Lowpass Filter Using Uniplanar Double Spiral Resonant Cells," Progress In Electromagnetics Research Letters, Vol. 23, 89-98, 2011.
doi:10.2528/PIERL11032112
http://jpier.org/PIERL/pier.php?paper=11032112

References


    1. Hong, J.-S. and M. J. Lancaster, Microstrip Filters for RF/Microwave Applications, Wiley, New York, 2001.
    doi:10.1002/0471221619

    2. Ahn, D., J.-S. Park, C.-S. Kim, J. Kim, Y. Qian, and T. Itoh, "A design of the low-pass filter using the novel microstrip defected ground structure," IEEE Trans. Microw. Theory Tech., Vol. 49, No. 1, 86-93, 2001.
    doi:10.1109/22.899965

    3. Abdel-Rahman, A. B., A. K. Verma, A. Boutejdar, and A. S. Omar, "Control of bandstop response of Hi-Lo microstrip low-pass filter using slot in ground plane," IEEE Trans. Microw. Theory Tech., Vol. 52, No. 3, 1008-1013, 2004.
    doi:10.1109/TMTT.2004.823587

    4. Chen, W.-L., G.-M. Wang, and Y.-N. Qi, "Fractal-shaped Hi-Lo microstrip low-pass filters with high passband performance," Microwave and Optical Technology Letters, Vol. 49, No. 10, 2577-2579, 2007.
    doi:10.1002/mop.22774

    5. Guo, Y., G. Goussetis, A. P. Feresidis, and J. C. Vardaxoglou, "Efficient modeling of novel uniplanar left-handed metamaterials," IEEE Trans. on Microw. Theory and Tech., Vol. 53, No. 4, 1462-1468, 2005.
    doi:10.1109/TMTT.2005.845204

    6. Kokkinos, T., A. P. Feresidis, and J. C. Vardaxoglou, "On the use of spiral resonators for the design of uniplanar microstrip based left-handed metamaterials," Proc. European Conference on Antennas and Propagation, Nice, France, 2006.

    7. Kokkinos, T., A. P. Feresidis, and J. C. Vardaxoglou, "Equivalent circuit of double spiral resonators supporting backward waves," Loughborough Antennas and Propagation Conference, 289-292, Loughborough University of Technology, UK, 2007.

    8. Keshavarz, R., M. Movahhedi, A. Hakimi, and A. Abdipour, "A novel broad bandwidth and compact backward coupler with high coupling level," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 2–3, 283-293, 2011.
    doi:10.1163/156939311794362885

    9. Huang, J.-Q. and Q.-X. Chu, "Compact UWB band-pass filter utilizing modified composite right/left-handed structure with cross coupling," Progress In Electromagnetics Research, Vol. 107, 179-186, 2010.
    doi:10.2528/PIER10070403

    10. Abdelaziz, A. F., T.M. Abuelfadl, and O. L. Elsayed, "Realization of composite right/left-handed transmission line using coupled lines," Progress In Electromagnetics Research, Vol. 92, 299-315, 2009.
    doi:10.2528/PIER09040305

    11. Kokkinos, T. and A. P. Feresidis, "Low-profile folded monopoles with embedded planar metamaterial phase-shifting lines," IEEE Trans. Antennas Propagat., Vol. 57, No. 10, 2997-3008, 2009.
    doi:10.1109/TAP.2009.2028605

    12. Bilotti, F., A. Toscano, and L. Vegni, "Design of spiral and multiple split-ring resonators for the realization of miniaturized metamaterial samples," IEEE Trans. Antennas Propagat., Vol. 55, No. 8, 2258-2267, 2007.
    doi:10.1109/TAP.2007.901950

    13. Yue, C. P. and S. S. Wang, "A physical model for planar spiral inductors on silicon," International Electron. Devices Meeting Technical Digest, 155-158, 1996.
    doi:10.1109/IEDM.1996.553144

    14. Chi, C.-Y. and G. M. Rebeiz, "Planar microwave and millimeter-wave lumped elements and coupled-line filters using micromachining machining techniques," IEEE Trans. Microw. Theory Tech., Vol. 43, 730-738, 1995.

    15. Wang, J., S. Qu, Z. Xu, H. Ma, Y. Yang, and C. Gu, "A controllable magnetic metamaterial: Split-ring resonator with rotated inner ring," IEEE Trans. Antennas Propagat., Vol. 56, No. 7, 2018-2022, 2008.
    doi:10.1109/TAP.2008.924728