Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/KIEE.2016.65.2.329
Title & Authors
Signal-to-noise Ratio Improvement of a FM Antenna Using a Non-Foster Circuit Park, Hongwoo; Kahng, Sungtek; Kim, Hongjoon;
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.
Broadband matching;Non-foster impedance matching;Negative impedance converter;FM antenna;Signal-to-noise ratio improvement;
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