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Compact Frequency and Bandwidth Reconfigurable Microwave Filter

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Abstract

This paper details the construction and working of a compound reconfigurable filter capable of frequency and bandwidth reconfiguration in the frequency range from 2 to 3 GHz. The switching between frequency and bandwidth reconfiguration is inherited by two PIN diodes. Bandwidth tuning is facilitated by tuning two transmission zeros individually using varactor diodes, giving flexibility in reconfiguring the upper and lower pass edges. The two transmission zeros are obtained using simple concentric square loop resonators. The maximum bandwidth obtained is 1.5 times the minimum bandwidth offered by the filter. Hence the filter can be used for dynamic bandwidth allocation. This prototype is fabricated and validated in real-time. The simulated and measured results are analogous to each other.

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Authors and Affiliations

  1. Faculty of Engineering, Symbiosis Institute of Technology, Pune, India

    Saffrine Kingsly

  2. Department of Electronics and Communication Engineering, Anna University, Chennai, India

    Malathi Kanagasabai

  3. Department of Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India

    M. Gulam Nabi Alsath

  4. Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Chennai, India

    P. Sandeep Kumar & T. Rama Rao

  5. Department of Electronics and Communication Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India

    K. Indhumathi

  6. School of Electronics Engineering, Vellore Institute of Technology, Vellore, India

    Sangeetha Subbaraj

  7. Department of Electronics and Communication Engineering, Sastra Deemed University, Thanjavur, India

    Yogeshwari Panneer Selvam

Authors
  1. Saffrine Kingsly
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  2. Malathi Kanagasabai
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  3. M. Gulam Nabi Alsath
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  4. P. Sandeep Kumar
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  5. T. Rama Rao
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  6. K. Indhumathi
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  7. Sangeetha Subbaraj
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  8. Yogeshwari Panneer Selvam
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Correspondence to Saffrine Kingsly.

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Kingsly, S., Kanagasabai, M., Alsath, M.G.N. et al. Compact Frequency and Bandwidth Reconfigurable Microwave Filter. Wireless Pers Commun 115, 1755–1768 (2020). https://doi.org/10.1007/s11277-020-07652-0

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  • DOI: https://doi.org/10.1007/s11277-020-07652-0

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