| Title |
Signal-to-noise Ratio Improvement of a FM Antenna Using a Non-Foster Circuit |
| Authors |
박홍우(Park, Hongwoo) ; 강승택(Kahng, Sungtek) ; 김홍준(Kim, Hongjoon) |
| DOI |
https://doi.org/10.5370/KIEE.2016.65.2.329 |
| Keywords |
Broadband matching ; Non-foster impedance matching ; Negative impedance converter ; FM antenna ; Signal-to-noise ratio improvement |
| 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. |