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Wideband Artificial Magnetic Conductors Loaded With Non-Foster Negative Inductors

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3 Author(s)
Daniel. J. Gregoire ; HRL Laboratories, LLC, Malibu, CA, USA ; Carson. R. White ; Joseph. S. Colburn

We examine how the bandwidth of artificial magnetic conductors (AMCs) can be greatly increased when loaded with negative-inductance non-Foster circuits. This increase in bandwidth is achieved by enhancing the structural inductance of the AMC by combining it in parallel with a negative inductance, thus achieving a bandwidth that exceeds what is possible with passive approaches. A prototype VHF-UHF active AMC was fabricated and measured, which achieved a bandwidth greater than 80% at a resonant frequency of 263 MHz.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:10 )