Skip to main content
×
Home
    • Aa
    • Aa

A compact microstrip low-pass filter with ultra wide stopband using compact microstrip resonant cells

  • Saeed Roshani (a1)
Abstract

In this paper, a novel compact microstrip low-pass filter (LPF) with ultra wide stop band and sharp roll off, is proposed. In the proposed structure, a high impedance transmission line is loaded by compact microstrip resonant cells, which results in ultra wide stopband. The −3 dB cut-off frequency of filter is 1.5 GHz and the maximum insertion loss is <0.1 dB in the passband. The proposed LPF presents extremely wide stopband from 1.68 to 44 GHz, with more than the −20 dB attenuation level, which suppresses the 2nd to 29th harmonics with high rejection levels. The size of the proposed LPF is only 0.1 λg × 0.19 λg, which shows excellent size reduction. There is a good agreement between the simulated and measured results.

Copyright
Corresponding author
Corresponding author: S. Roshani Email: s_roshani@iauksh.ac.ir
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

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

[2] S. Xu ; K. Ma ; F. Meng ; K.S. Yeo : DGS embedded transformed radial stub for ultra-wide stopband lowpass filter. Electron. Lett., 48 (2012), 99100.

[3] J. Yang ; W. Wu : Compact elliptic-function low-pass filter using defected ground structure. IEEE Microw. Wireless Compon. Lett., 18 (2008), 578580.

[4] S.S. Karthikeyan ; R.S. Kshetrimayum : Compact and wide stopband lowpass filter using open complementary split ring resonator and defected ground structure. Radioengineering, 24 (2015), 708711.

[6] D.J. Jung ; K. Chang : Low-pass filter design through the accurate analysis of electromagnetic-bandgap geometry on the ground plane. IEEE Trans. Microw. Theory Tech., 57 (2009), 17981798.

[7] S.Y. Huang ; Y.H. Lee : Compact U-shaped dual planar EBG microstrip low-pass filter. IEEE Trans. Microw. Theory Tech., 53 (2005), 37993805.

[8] M. Hayati ; S. Roshani ; S. Roshani ; F. Shamma : A novel miniaturized Wilkinson power divider with nth harmonic suppression. J. Electromagn. Waves Appl., 27 (2013), 726735.

[9] K. Ma ; K.S. Yeo ; W.M. Lim : Ultra-wide rejection band lowpass cell. Electron. Lett., 48 (2012), 99100.

[10] J. Wang ; H. Cui ; G. Zhang : Design of compact microstrip lowpass filter with ultra-wide stopband. Electron. Lett., 48 (2012), 854856.

[11] L. Ge ; J.P. Wang ; Y.-X. Guo : Compact microstrip lowpass filter with ultra-wide stopband. Electron. Lett., 46 (2010), 689691.

[12] J. Wang ; L.J. Xu ; S. Zhao ; Y.X. Guo ; W. Wu : Compact quasi-elliptic microstrip lowpass filter with wide stopband. Electron. Lett., 46 (2010), 13841385.

[13] J.-L. Li ; S.-W. Qu ; Q. Xue : Compact microstrip lowpass filter with sharp roll-off and wide stop-band. Electron. Lett., 45 (2009), 110111.

[14] S. Luo ; L. Zhu ; S. Sun : Stopband-expanded low-pass filters using microstrip coupled-line hairpin units. IEEE Microw. Wireless Compon. Lett., 18 (2008), 506508.

[15] F. Wei ; L. Chen ; X.-W. Shi : Compact lowpass filter based on coupled-line hairpin unit. Electron. Lett., 48 (2012), 379381.

[16] X.B. Wei ; P. Wang ; M.Q. Liu ; Y. Shi : Compact wide-stopband lowpass filter using stepped impedance hairpin resonator with radial stubs. Electron. Lett., 47 (2011), 862863.

[19] K.M. Shum ; T.T. Mo ; Q. Xue ; C.H. Chan : A compact bandpass filter with two tuning transmission zeros using a CMRC resonator. IEEE Trans. Microw. Theory Tech., 53 (2005), 895900.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

International Journal of Microwave and Wireless Technologies
  • ISSN: 1759-0787
  • EISSN: 1759-0795
  • URL: /core/journals/international-journal-of-microwave-and-wireless-technologies
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 5
Total number of PDF views: 47 *
Loading metrics...

Abstract views

Total abstract views: 304 *
Loading metrics...

* Views captured on Cambridge Core between 25th October 2016 - 21st September 2017. This data will be updated every 24 hours.