antennas;
antenna efficiency;
electrically small antennas;
metamaterials;
parasitics;
ELECTRICALLY SMALL ANTENNAS;
D O I:
10.1002/mop.25067
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Several dual-band three-dimensional magnetic EZ antenna designs and their simulated performance characteristics are presented. The proposed antennas are formed by integrating multiple capacitively loaded loop elements with a coaxially fed electrically small semicircular loop antenna. They can he designed for a broad range of frequencies by tuning the near field resonant parasitic elements separately. The design details. radiation efficiencies, and fractional bandwidths of these antenna systems for their different dual-hand frequency ranges are reported. (C) 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 971-975, 2010: Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25067