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Active Metamaterial-Inspired Broad-Bandwidth, Efficient, Electrically Small Antennas

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2 Author(s)
Ning Zhu ; Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA ; Ziolkowski, R.W.

Realistic designs of broad-bandwidth metamaterial-inspired electric and magnetic antennas are characterized numerically. By augmenting their narrow bandwidth counterparts with internal non-Foster elements, active metamaterial unit cells are introduced as near-field resonant parasitic (NFRP) elements. The driven and NFRP elements in each presented case are designed to achieve nearly complete matching of the entire system to a 50- Ω source without any matching network and to yield high radiation efficiencies over their FBW10 dB bandwidths that are more than 75 times their original values.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )