Abstract

Electrically small antennas (ESA) using passive impedance matching have their inherent limitations imposed by the high Q impedance such as narrow bandwidth and/or poor gain. However, active matching incorporating non-Foster circuits can provide a good solution to overcome these problems. In this paper, a wideband transistor negative LC converter is proposed for application to electrically small half-loop antenna design. Furthermore, the stability of non-Foster impedance matching to electrically small half-loop antenna is analyzed.

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