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A Non-Foster VHF Monopole Antenna

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3 Author(s)
White, C.R. ; HRL Labs., LLC, Malibu, CA, USA ; Colburn, J.S. ; Nagele, R.G.

Non-Foster matching promises to improve the performance of electrically small antennas by tens of decibels over a decade of bandwidth, but only a few successful demonstrations have been reported in the literature. A 15-cm monopole antenna has been matched using a variable negative capacitance based on Linvill's balanced negative impedance converter. The realized gain is improved by >;10 dB relative to the unmatched case over 30-200 MHz. This letter reports the design, simulation, and measurement data and gives an equivalent circuit that can be used to synthesize future designs.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )