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Compact lowpass filter with sharp roll-off and wide stopband using dual-stepped impedance resonator

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Abstract

A lowpass filter unit with sharp roll-off and wide stopband using dual-stepped impedance resonator (DSIR) is presented. The lowpass filter unit is composed of DSIR, open circuited stubs, and high-impedance transmission lines. DSIR mainly dominates the passband and stopband width while open stubs are used to enhance the suppression level with one transmission zero. Three transmission zeros are introduced to stopband and one closed to passband edge. Thus, a very sharp transition can be achieved. A compact lowpass filter with sharp roll-off rate of 201 dB/octave, wide stopband of 5.9f c , and high suppression level of 30 dB was obtained when two asymmetric units were cascaded.

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References

  1. Hsieh L H, Chang K. Compact elliptic-function low-pass filters using microstrip stepped-impedance hairpin resonators. IEEE Trans Microw Theory Tech, 2003, 51: 193–199

    Article  Google Scholar 

  2. Li L, Li Z F, Mao J F. Compact lowpass filters with sharp and expanded stopband using stepped impedance hairpin units. IEEE Microw Wireless Compon Lett, 2010, 20: 310–312

    Article  Google Scholar 

  3. Velidi V K, Sanyal S S. Sharp roll-off lowpass filters with wide stopband using stub-loaded coupled-line hairpin unit. IEEE Microw Wireless Compon Lett, 2011, 21: 301–303

    Article  Google Scholar 

  4. Yang J, Wu W. Compact elliptic-function low-pass filter using defected ground structure. IEEE Microw Wireless Compon Lett, 2008, 18: 578–580

    Article  Google Scholar 

  5. Duran-Sindreu M, Bonache J, Martin F. Compact elliptic-function coplanar waveguide low-pass filters using backside metallic patterns. IEEE Microw Wireless Compon Lett, 2010, 20: 601–603

    Article  Google Scholar 

  6. Aznar F, Velez A, Duran-Sindreu M, et al. Elliptic-function CPW low-pass filters implemented by means of open complementary split ring resonator (OCSRRs). IEEE Microw Wireless Compon Lett, 2009, 19: 689–691

    Article  Google Scholar 

  7. Yang R Y, Lin Y L, Hung C Y, et al. Design of a compact and sharp-rejection low-pass filter with a wide stopband. J Electromagn Waves Appl, 2012, 26: 2284–2290

    Article  Google Scholar 

  8. Cao H, Ying W, Li H, et al. Compact lowpass filter with wide stopband using novel windmill resonator. J Electromag Waves Appl, 2012, 26: 2234–2241

    Article  Google Scholar 

  9. Cao H L, Ying W B, Li H, et al. Compact lowpass filter with ultra-wide stopband rejection using meandered-slot dumbbell resonator. J Electromag Waves Appl, 2012, 26: 2203–2210

    Article  Google Scholar 

  10. Wang J P, Ge L, Guo Y X, et al. Miniaturised microstrip lowpass filter with broad stopband and sharp roll-off. Electron Lett, 2010, 46: 573–574

    Article  Google Scholar 

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Authors and Affiliations

  1. Institute of Microelectronics, Chinese Academy of Sciences, Beijing, 100029, China

    ZeBao Du, Hao Yang, HaiYing Zhang & Min Zhu

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  1. ZeBao Du
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  2. Hao Yang
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  3. HaiYing Zhang
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  4. Min Zhu
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Correspondence to Hao Yang.

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Du, Z., Yang, H., Zhang, H. et al. Compact lowpass filter with sharp roll-off and wide stopband using dual-stepped impedance resonator. Sci. China Inf. Sci. 57, 1–6 (2014). https://doi.org/10.1007/s11432-014-5137-1

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  • DOI: https://doi.org/10.1007/s11432-014-5137-1

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