Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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A Novel Compact Metamaterial Zeroth Order Resonant Bandpass Filter for a VHF Band and Its Stopband Improvement by Transmission Zeros

  • Kahng, Sungtek (Department of Information & Telecommunication Engineering, Incheon National University) ;
  • Jang, Geonho (Department of Information & Telecommunication Engineering, Incheon National University)
  • Received : 2013.11.15
  • Accepted : 2013.12.04
  • Published : 2013.12.31
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Abstract

A novel compact and low-loss VHF bandpass filter is presented with enhanced stopband performance using metamaterial zeroth order resonator (ZOR) characteristics. An in-line ZOR filter is initially suggested and changed to have transmission zeros (TZs) due to source-load coupling for effective improvement of the isolation from UHF wireless channels. The proposed filter is smaller than 1/10 of the conventional filters in terms of size and has relatively very low insertion loss (< 1 dB for the electromagnetic (EM) simulation and < 3 dB for the measurement) and return loss (<-20 dB) in the passband due to the approximately 80% size reduction and the higher isolation in the stopband due to the TZs. The circuit and EM simulation are in good agreement with the measurements.

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References

  1. R. C. Allison, Compact Edge Coupled Filter, US Patent 6,762,660 B2, to Raytheon Company, Washington, DC: Patent and Trademark Office, 2004.
  2. C. C. Yu and K. Chang, "Novel compact elliptic-function narrow-band bandpass filters using microstrip openloop resonators with coupled and crossing lines," IEEE Transactions on Microwave Theory and Techniques, vol. 46, no. 7, pp. 952-958, Jul. 1998. https://doi.org/10.1109/22.701448
  3. J. Zhang, J. Z. Gu, B. Cui, and X. W. Sun, "Compact and harmonic suppression open-loop resonator bandpass filter with tri-section SIR," Progress in Electromagnetics Research, vol. 69, pp. 93-100, 2007. https://doi.org/10.2528/PIER06120702
  4. C. Caloz and T. Itoh, Electromagnetic Metamaterials: Transmission Line Theory and Microwave Applications. New York, NY: John Wiley & Sons, 2006.
  5. R. Marques, F. Martin, and M. Sorolla, Metamaterials with Negative Parameters: Theory, Design, and Microwaves Applications. New York, NY: John Wiley & Sons, 2008.
  6. G. Jang and S. Kahng, "Design of a dual-band metamaterial bandpass filter using zeroth order resonance," Progress in Electromagnetics Research, vol. 12, pp. 149-162, 2010.

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