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Design of a compact multi-mode UWB band pass filter with flexible notch band employing interdigital coupled lines

  • Fatemeh Sabaghi (a1) (a2), Gholamreza Karimi (a3) and Arash Ahmadi (a3)

Abstract

A novel ultra-wideband Microstrip bandpass filter using Radial Stub Loaded Resonator (RSLR) and interdigital coupled Lines is presented in this paper. The RSLR and decagonal patch form a resonator named M to create tuneable multiple notches in the passband for the suppression of Wireless Local Area Network systems’ interference. To realize sharp roll-off, two adjustable transmission nulls are located at the lower and upper frequencies out of the passband. Even and odd-mode analysis is presented to calculate modal resonance frequencies contributing to create the ultra-wide passband. Bessel function is employed to estimate the input impedance of the radial stub which is used in formulation of even and odd mode admittances. Simulated and measured results show a passband from 3.4 to 12 GHz (135% bandwidth around 6.39 GHz) with a rejection notch at 4.99 GHz is achieved with return losses better than 14 and 12 dB in the first and second passbands, respectively. The insertion loss is lower than 0.9 dB in the 90% of passband and rejection level is greater than 19 dB from 12.25 to 17.45 GHz.

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Corresponding author

Corresponding author: Gh. Karimi Email: ghkarimi@razi.ac.ir

References

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[1]Revision of part 15 of the Commission's Rules Regarding ultra wide-band Transmission System FCC, Washington, DC, ET-Docket 98-153, 2002.
[2] Hong, J.S.; Lancaster, M.J.: Microstrip Filters for RF/Microwave Applications. John Wiley & Sons, Inc., New York, 2001.
[3] Hsu, C.-Y.; Yeh, L.-k.; Chen, C.-Y.; Chuang, H.-R.: A 3–10 GHZ Ultra-Wideband Bandpass Filter with 5–6 GHZ Rejection band, in Proc. of Asia-Pacific Microwave, 2007.
[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] Liu, C.-Y.; Jiang, T.; Li, Y.-S.: A novel UWB filter with notch band characteristic using radial UIR/SIR loaded stub resonators. J. Electromagn. Waves Appl., 15 (2011), 24282433.
[6] Pirani, S.; Nourinia, J.; Ghobadi, Ch.: Band-notched UWB BPF design using parasitic coupled line. IEEE Microw. Wireless Compon. Lett, 20 (8) (2010), 444446.
[7] Sekar, V.; Entesari, K.: Miniaturized UWB bandpass filters with notch using slow-wave CPW multiple-mode resonators. IEEE Microw. Wireless Compon. Lett., 21 (2) (2011), 8082.
[8] Luo, X.; Ma, J.-G.; Yeo, K.S.; Li, Er.-P.: Compact ultra-wideband (UWB) bandpass filter with ultra-narrow dual and quad notched bands. IEEE Microw.Wireless Compon. Lett., 59 (6) (2011), 15091519.
[9] Xu, J.; Miao, C.; Wu, W.: Sharp rejection UWB bandpass filter with notched band. Electron. Lett., 48 (16) (2012), 10051006.
[10] Xu, J.; Wu, W.; Kang, W.; Miao, C.: Compact UWB bandpass filter with a notched band using radial stub loaded resonator. IEEE Microw. Wireless Compon. Lett., 22 (7) (2012), 351353.
[11] Wk, H.-W.; Chen, Y.-F.: Ultra wide band bandpass filter with dual-notched bands using stub-loaded rectangular ring multi-mode resonator. Microelectron. J., 43 (2012), 257262.
[12] Kim, C.H.; Cheng, K.: Ultra-wideband (UWB) ring resonator bandpass filter with a notch band. IEEE Microw. Wireless Compon. Lett., 21 (4) (2011), 206208.
[13] Fallahzadeh, S.; Tayarani, M.: A new Microstrip UWB bandpass filter using defected microstrip structures. J. Electromagn. Waves Appl., 24 (2012), 893902.
[14] Chu, Q.X.; Wu, X.H.; Tian, X.K.: Novel UWB bandpass filter using stub loaded multiple-mode resonator. IEEE Microw. Wireless Compon. Lett., 21 (8) (2011), 403405.
[15] Wadell, B.C.: Transmission Line Design Handbook, Artech House, Inc., British, 1991.
[16] Mirzaee, M.; Virdee, B.S.: UWB bandpass filter with notch-band based on transversal signal-injection concepts. Electron. Lett., 49 (6) (2013), 399401.

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Design of a compact multi-mode UWB band pass filter with flexible notch band employing interdigital coupled lines

  • Fatemeh Sabaghi (a1) (a2), Gholamreza Karimi (a3) and Arash Ahmadi (a3)

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