Design of log-periodic dipole array inspired antenna with very wide bandwidth.

A parallel-strip line fed antenna with very wide bandwidth is presented in this article. This wideband antenna is designed as a combination of two individual antenna elements that are connected in a way inspired by the log-periodic antenna array technique. To miniaturize the size of the structure, metamaterial-based antennas are used as the basic radiating elements. The proposed antennas are designed on FR4 substrate and measured results show that it has a very wide bandwidth from 0.68 to 120 GHz with a VSWR < 3 for frequency range from 0.68 to 3.2 GHz and VSWR < 2 for the remaining bandwidth, with relative stable radiation characteristics. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2646-2650, 2012; this online at wileyonlinelibrary.com. DOI 10.1002/mop.27150 [ABSTRACT FROM AUTHOR]