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Signal-to-noise Ratio Improvement of a FM Antenna Using a Non-Foster Circuit

Non-Foster 회로를 이용한 FM 안테나의 신호 대 잡음비 개선

  • Park, Hongwoo (Dept. of Electrical Engineering, Kyungpook National University) ;
  • Kahng, Sungtek (Dept. of Information and Telecommunication Engineering, University of Incheon) ;
  • Kim, Hongjoon (Dept. of Electrical Engineering, Kyungpook National University)
  • Received : 2015.11.30
  • Accepted : 2016.01.14
  • Published : 2016.02.01

Abstract

In this paper, we demonstrate a Non-Foster matching method for an electrically small antenna to improve the signal-to-noise ratio (SNR) of communication link. For the experiment, we used a general FM antenna whose resonance frequency is about 52-57 MHz and a floating type Linvill negative impedance converter(NIC)-based circuit as a Non-Foster matching element. By implementing the Non-Foster circuit to cover FM band, we can achieve a wide bandwidth matching covers 40-200 MHz. Our measurement shows 3-7 dB improvement of SNR for the same bandwidth though there are several spikes which means no improvement of SNR in the band.

Keywords

References

  1. RongLin Li, Bo Pan, J. Laskar, M. M. Tentzeris, "A compact broadband planar antenna for GPS, DCS-1800, IMT-2000, and WLAN applications", IEEE Antennas and Wireless Propagation Lett. vol. 6, pp. 25-27, July 2007. https://doi.org/10.1109/LAWP.2006.890754
  2. C. Rowell and E. Y. Lam, "Multiple frequency band and high isolation mobile device antennas using a capacitive slot", IEEE Trans. on Antennas and Propagation vol. 60, no. 8, pp. 3576-3582, July 2012. https://doi.org/10.1109/TAP.2012.2201077
  3. H. A. Wheeler, "Fundamental limitations of small antennas", Proceedings of the IRE vol. 35, no. 12, pp. 1479-1484, Dec 1947.
  4. R. M. Fano, "Theoretical limitations on the broadband matching of arbitrary impedances", Journal of the Franklin Institute vol. 249, no. 1, pp. 57-83, Jan. 1950. https://doi.org/10.1016/0016-0032(50)90006-8
  5. Hongjong Park, Sangho Lee, Sunghwan Park and Youngwoo Kwon, "Negative Impedance Converter IC for Non-Foster Matching", The Journal of Korea Electromagnetic Engineering Society vol. 26, no. 3, pp. 283-291, Mar. 2015. https://doi.org/10.5515/KJKIEES.2015.26.3.283
  6. Hyemin Yang and Kangwook Kim, "NIC-Based Non-Foster Impedance Matching of a Resistively Loaded Vee Dipole Antenna". The Journal of Korea Electromagnetic Engineering Society vol. 26, no. 7, pp. 597-605, July 2015. https://doi.org/10.5515/KJKIEES.2015.26.7.597
  7. R. M. Foster, "A reactance theorem", Bell System Technical Journal vol. 3, no. 2, pp. 259-267, April 1924. https://doi.org/10.1002/j.1538-7305.1924.tb01358.x
  8. J. G. Linvill, "Transistor negative-impedance converters". Proceedings of the IRE vol. 6, no. 41 pp. 725-729, June 1953.

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