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Highly compact UWB bandpass filter based on composite right/left-handed transmission line and meander fractal like ring slot in ground

  • Babu Lal Shahu (a1), Srikanta Pal (a2), Neela Chattoraj (a3) and Dileep Kumar Upadhyay (a4)
Abstract

An ultra-wideband (UWB) highly compact bandpass filter with extremely high passband bandwidth is presented. The proposed structure is made using three-staged stepped-impedance lines and a composite right/left-handed transmission line (CRLH-TL) synthesized with meander fractal like ring slot in the ground and series capacitive gap in conductor strip. The capacitive gap in conductor strip and meander fractal like ring slot in the ground plane play major role for controlling the lower and higher cut-off frequencies. The equivalent circuit model of proposed filter is demonstrated and lumped parameters are extracted. A prototype is fabricated to experimentally validate the performance of proposed filter. The proposed UWB filter has extremely wide −10 dB return loss passband bandwidth from 3.14 to 18.26 GHz with relative bandwidth of 142% and insertion loss better than 0.5 dB. Also it achieves a wide upper-stopband from 19.7 to 24.4 GHz with insertion loss better than 13.0 dB, return loss <1.5 dB and sharpened rejection skirts outside the passband at both lower and upper frequency ends. Good agreement is found between simulated and measured results with measured group delay variation in the passband <0.65 ns.

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Corresponding author
Corresponding author: B.L. Shahu Email: sahu.babulal@gmail.com
References
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[1] Federal Communications Commission: Revision of part 15 of the commission's rules regarding ultra wideband transmission system first report and order. Tech. Rep., (2002), 98153.
[2] Hao Z.C.; Hong J.S.: Ultrawideband Filter Technologies. IEEE Microw. Mag., 11 (4) (2010), 5668.
[3] Sun S.; Zhu L.: Multiple-resonator-based bandpass filters. IEEE Microw. Mag., 10 (2) (2009), 8898.
[4] Zhu L.; Sun S.; Menzel W.: Ultra-wideband (UWB) bandpass filters using multiple-mode resonator. IEEE Microw. Wireless Compon. Lett., 15 (11) (2005), 796798.
[5] Zhang Z.; Xiao F.: An UWB bandpass filter based on a novel type of multi-mode resonator. IEEE Microw. Wireless Compon. Lett., 22 (10) (2012), 506508.
[6] Tang C.-W.; Chen M.-G.: A microstrip ultra-wideband bandpass filter with cascaded broadband bandpass and bandstop filters. IEEE Trans. Microw. Theory Tech., 55 (11) (2007), 24122418.
[7] Wang H.; Zhu L.; Menzel W.: Ultra-wideband (UWB) bandpass filter with hybrid microstrip/CPW structure. IEEE Microw. Wireless Compon. Lett., 15 (12) (2005), 844846.
[8] Thomson N.; Hong J.-S.: Compact ultra-wideband microstrip/coplanar waveguide bandpass filter. IEEE Microw. Wireless Compon. Lett., 17 (3) (2007), 184186.
[9] Hong J.-S.; Shaman H.: An optimum ultra-wideband microstrip filter. Microw. Opt. Technol. Lett., 47 (3) (2005), 230233.
[10] Wong S.W.; Zhu L.: EBG-embedded multiple-mode resonator for UWB bandpass filter with improved upper-stopband performance. IEEE Microw. Wireless Compon. Lett., 17 (6) (2007), 421423.
[11] Bu Q.; Ding J.; Guo C.J.: New design of ultra-wideband filter using interdigitated coupled lines CRLH-TL structure, in 2012 10th Int. Symp. on Antennas, Propagation & EM Theory (ISAPE), Xian, China, 2012, 486489.
[12] Ahmed K.U.; Virdee B.S.: Ultra-wideband bandpass filter based on composite right/left handed transmission-line unit-cell. IEEE Trans. Microw. Theory Tech., 61 (2) (2013), 782788.
[13] Alburaikan A.; Aqeeli M.; Huang X.; Hu Z.: Miniaturized ultra-wideband bandpass filter based on CRLH-TL unit cell, in Microw. Conf. (EuMC), Rome, Italy, 2014, 540543.
[14] Abbosh A.M.: Ultra wideband balanced bandpass filter. IEEE Microw. Wireless Compon. Lett., 21 (9) (2011), 480482.
[15] Abbosh A.M.: Planar bandpass filters for ultra-wideband applications. IEEE Trans. Microw. Theory Tech., 55 (10) (2007), 22622269.
[16] Xia B.; Wu L.S.; Mao J.F.: An ultra-wideband (UWB) balanced bandpass filter based on defected ground structure. Prog. Electromag. Res. C, 25 (2012), 133144.
[17] Falcone F.; Lopetegi T.; Baena J.D.; Marques R.; Martín F.; Sorolla M.: Effective negative-ε stopband microstrip lines based on complementary split ring resonators. IEEE Microw. Wireless Compon. Lett., 14 (6) (2004), 280282.
[18] Falcone F. et al. : Babinet principle applied to the design of metasurfaces and metamaterials. Phys. Rev. Lett., 93 (19) (2004), 197401197404.
[19] Lai A.; Itoh T.; Caloz C.: Composite right/left-handed transmission line metamaterials. IEEE Microw. Mag., 5 (3) (2004), 3450.
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International Journal of Microwave and Wireless Technologies
  • ISSN: 1759-0787
  • EISSN: 1759-0795
  • URL: /core/journals/international-journal-of-microwave-and-wireless-technologies
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