TY - JOUR
T1 - Broad-Bandwidth, Electrically Small Antenna Augmented With an Internal Non-Foster Element
AU - Zhu, Ning
AU - Ziolkowski, Richard W.
N1 - Funding Information:
Manuscript received June 08, 2012; revised August 26, 2012; accepted September 14, 2012. Date of publication September 18, 2012; date of current version October 04, 2012. This work was supported in part by the NSF under Contract No. ECCS-1126572.
PY - 2012
Y1 - 2012
N2 - A broad-bandwidth, electrically small, near-field resonant parasitic (NFRP) dipole antenna has been designed, analyzed, and measured. Unlike conventional active external matching network approaches, a non-Foster component with a negative reactance slope was incorporated into the NFRP element of an Egyptian-axe dipole antenna to significantly increase its bandwidth. The measurement results showed approximately a 25.3 MHz 10 dB bandwidth around 300 MHz for the active system (ka = 0.49), which is 6.02 and 3.89 times greater than, respectively, the simulated and measured values of the original passive design.
AB - A broad-bandwidth, electrically small, near-field resonant parasitic (NFRP) dipole antenna has been designed, analyzed, and measured. Unlike conventional active external matching network approaches, a non-Foster component with a negative reactance slope was incorporated into the NFRP element of an Egyptian-axe dipole antenna to significantly increase its bandwidth. The measurement results showed approximately a 25.3 MHz 10 dB bandwidth around 300 MHz for the active system (ka = 0.49), which is 6.02 and 3.89 times greater than, respectively, the simulated and measured values of the original passive design.
KW - Broadband antennas
KW - Chu-Thal limit
KW - Electrically small antennas (ESAs)
KW - Metamaterial-inspired antennas
KW - Non-Foster elements
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U2 - 10.1109/LAWP.2012.2219572
DO - 10.1109/LAWP.2012.2219572
M3 - Article
AN - SCOPUS:84867487398
SN - 1536-1225
VL - 11
SP - 1116
EP - 1120
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
M1 - 6305461
ER -