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Signal-to-noise Ratio Improvement of a FM Antenna Using a Non-Foster Circuit
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 Title & Authors
Signal-to-noise Ratio Improvement of a FM Antenna Using a Non-Foster Circuit
Park, Hongwoo; Kahng, Sungtek; Kim, Hongjoon;
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 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
Broadband matching;Non-foster impedance matching;Negative impedance converter;FM antenna;Signal-to-noise ratio improvement;
 Language
Korean
 Cited by
 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. crossref(new window)

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. crossref(new window)

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. crossref(new window)

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. crossref(new window)

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. crossref(new window)

7.
R. M. Foster, "A reactance theorem", Bell System Technical Journal vol. 3, no. 2, pp. 259-267, April 1924. crossref(new window)

8.
J. G. Linvill, "Transistor negative-impedance converters". Proceedings of the IRE vol. 6, no. 41 pp. 725-729, June 1953.