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NIC-Based Non-Foster Impedance Matching of a Resistively Loaded Vee Dipole Antenna
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 Title & Authors
NIC-Based Non-Foster Impedance Matching of a Resistively Loaded Vee Dipole Antenna
Yang, Hyemin; Kim, Kangwook;
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Negative impedance converter(NIC)-based non-Foster impedance matching is proposed for an electrically small antenna. The antenna considered in this work is a resistively loaded vee dipole(RVD) antenna, which has considerable reflection at the feed point because of its large negative input reactance. The non-Foster matching circuit built near the feed point consists of two-stage NIC circuit and a capacitor connected between the stages. The NIC is realized by using operational amplifiers(op-amps) and resistors. The circuit is designed by considering of the input impedance according to the finite open-loop gain of the practical NICs. The stability test of the impedance-matched RVD antenna is performed. The non- Foster matching circuit is implemented with the RVD antenna. The measured impedance demonstrates that the proposed non-Foster matching circuit effectively reduces the input reactance of the RVD antenna.
Non-Foster Impedance Matching;Negative Impedance Converter;Resistively Loaded Vee Dipole Antenna;Impedance Matching;
 Cited by
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