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Design of compact microstrip low pass filter using triangular and rectangular shaped resonator with ultra-wide stopband and sharp roll-off

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Abstract

In this paper a new microstrip lowpass filter (LPF) is designed and fabricated with sharp roll-off and ultra-wide stop-band. To obtain these features, triangular and T-shaped resonators are utilized. The main resonator is created by two triangular and rectangular shaped structures. LC equivalent circuit and transfer function of the main resonator is extracted to compute transmission zeros of the main resonator. The proposed LPF has a 3 dB cut-off frequency of 1.663 GHz. The occupied size of the designed filter is 209.33 mm2 (17.3 mm × 12.1 mm). The ultra-wide stopband is achieved from 1.81 to 29.4 GHz with better than 20 dB attenuation. The achieved figure-of-merit of the proposed LPF is 33,813, which shows good specifications of the filter.

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References

  1. Hong, J. S., & Lancaster, M. J. (2004). Microstrip filters for RF/microwave applications. London: Wiley.

    Google Scholar 

  2. Verma, A. K., et al. (2011). Design of low-pass filters using some defected ground structures. International Journal of Electronics and Communications, 65(10), 864–872.

    Article  Google Scholar 

  3. Ballam, A., et al. (2007). Quasi-elliptic microstrip low-pass filters using an interdigital DGS slot. IEEE Microwave and Wireless Components, 17(8), 586–588.

    Article  Google Scholar 

  4. Roshani, S., & Roshani, S. (2019). Design of a very compact and sharp bandpass diplexer with bended lines for GSM and LTE applications. AEU-International Journal of Electronics and Communications, 1(99), 354–360.

    Article  Google Scholar 

  5. Heshmati, H., & Roshani, S. (2018). A miniaturized lowpass bandpass diplexer with high isolation. AEU-International Journal of Electronics and Communications, 1(87), 87–94.

    Article  Google Scholar 

  6. Noori, L., & Rezaei, A. (2018). Design of a compact narrowband quad-channel diplexer for multi-channel long-range RF communication systems. Analog Integrated Circuits and Signal Processing, 94(1), 1–8.

    Article  Google Scholar 

  7. Roshani, S., Roshani, S., & Zarinitabar, A. (2018). A modified Wilkinson power divider with ultra harmonic suppression using open stubs and lowpass filters. Analog Integrated Circuits and Signal Processing, 98, 1–5.

    Google Scholar 

  8. Pirasteh, A., Roshani, S., & Roshani, S. (2018). A modified class-F power amplifier with miniaturized harmonic control circuit. AEU-International Journal of Electronics and Communications, 1(97), 202–209.

    Article  Google Scholar 

  9. Ge, L., et al. (2010). Compact microstriplowpass filter with ultra-wide stopband. Electronics Letters, 46(10), 689–691.

    Article  Google Scholar 

  10. Wang, J., et al. (2010). Compact quasi-elliptic microstriplowpass filter with wide stopband. Electronics Letters, 46(20), 1384–1385.

    Article  Google Scholar 

  11. Karimi, G., et al. (2014). Design of microstrip LPF with sharp cut-off frequency and wide stopband. Frequenz, 68(7–8), 313–319.

    Google Scholar 

  12. Li, L., et al. (2010). Compactlowpass filters with sharp and expanded stopband using stepped impedance hairpin units. IEEE Microwave and Wireless Components Letters, 20(6), 310–312.

    Article  Google Scholar 

  13. Zhang, R., et al. (2014). Design of a wideband bandpass filter with composite short-and open-circuited stubs. IEEE Microwave and Wireless Components Letters, 24(2), 96–98.

    Article  Google Scholar 

  14. Karimi, G., et al. (2013). Design of sharp roll-off lowpass filter with ultra wide stopband. IEEE Microwave and Wireless Components Letters, 23(6), 303–305.

    Article  Google Scholar 

  15. Pirasteh, A., Roshani, S., & Roshani, S. (2018). Compact microstrip lowpass filter with ultrasharp response using a square-loaded modified T-shaped resonator. Turkish Journal of Electrical Engineering and Computer Sciences, 26(4), 1736–1746.

    Article  Google Scholar 

  16. Jiang, S., & Xu, J. (2017). Compact microstriplowpass filter with ultra-wide stopband based on dual-plane structure. Electronics Letters, 53(9), 607–609.

    Article  Google Scholar 

  17. Roshani, S. (2017). A compact microstrip low-pass filter with ultra wide stopband using compact microstrip resonant cells. International Journal of Microwave and Wireless Technologies, 9(5), 1023–1027.

    Article  Google Scholar 

  18. Liu, S., Xu, J., & Xu, Z. (2015). Compact lowpass filter with wide stopband using stepped impedance hairpin units. Electronics Letters, 51(1), 67–69.

    Article  Google Scholar 

  19. Kumar, L., & Parihar, M. S. (2016). Compact hexagonal shape elliptical lowpass filter with wide stop band. IEEE Microwave and Wireless Components Letters, 26(12), 978–980.

    Article  Google Scholar 

  20. Majidifar, S. (2016). High performance microstrip LPFs using dual taper loaded resonator. International Journal for Light and Electron Optics, 127(6), 3484–3488.

    Article  Google Scholar 

  21. Sheikhi, A., Alipour, A., & Hemesi, H. (2017). Design of microstrip wide stopband lowpass filter with lumped equivalent circuit. Electronics Letters, 53(21), 1416–1418.

    Article  Google Scholar 

  22. Raphika, P. M., Abdulla, P., & Jasmine, P. M. (2016). Planar elliptic function lowpass filter with sharp roll-off and wide stopband. Microwave and Optical Technology Letters, 58(1), 133–136.

    Article  Google Scholar 

  23. Majidifar, S. (2016). Design of high performance miniaturized lowpass filter using new approach of modeling. Applied Computational Electromagnetics Society Journal, 31(1), 52–57.

    Google Scholar 

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Authors and Affiliations

  1. Department of Electrical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran

    Meisam Tahmasbi & Farhad Razaghian

  2. Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

    Sobhan Roshani

Authors
  1. Meisam Tahmasbi
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  2. Farhad Razaghian
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  3. Sobhan Roshani
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Correspondence to Farhad Razaghian.

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Tahmasbi, M., Razaghian, F. & Roshani, S. Design of compact microstrip low pass filter using triangular and rectangular shaped resonator with ultra-wide stopband and sharp roll-off. Analog Integr Circ Sig Process 101, 99–107 (2019). https://doi.org/10.1007/s10470-019-01525-8

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  • DOI: https://doi.org/10.1007/s10470-019-01525-8

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