Vol. 21

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2011-09-14

A Printed Log-Periodic Tree-Dipole Antenna (Plptda)

By Shu Lin, Shan Luan, Yudie Wang, Xiao Luo, Xue Han, Xing-Qi Zhang, Yu Tian, and Xin-Yue Zhang
Progress In Electromagnetics Research M, Vol. 21, 19-32, 2011
doi:10.2528/PIERM11080109

Abstract

A miniaturized printed log-periodic fractal dipole antenna is proposed. Tree fractal structure is introduced in an antenna design and evolves the traditional Euclidean log-periodic dipole array into the log-periodic second-iteration tree-dipole array (LPT2DA) for the first time. Main parameters and characteristics of the proposed antenna are discussed. A fabricated proof-of-concept prototype of the proposed antenna is etched on a FR4 substrate with a relative permittivity of 4.4 and volume of 490 mm × 245 mm × 1.5 mm. The impedance bandwidth (measured VSWR < 2) of the fabricated antenna with approximate 40% reduction of traditional log-periodic dipole antenna is from 0.37 to 3.55 GHz with a ratio of about 9.59 : 1. Both numerical and experimental results show that the proposed antenna has stable directional radiation patterns and apparently miniaturized effect, which are suitable for various ultra-wideband applications.

Citation


Shu Lin, Shan Luan, Yudie Wang, Xiao Luo, Xue Han, Xing-Qi Zhang, Yu Tian, and Xin-Yue Zhang, "A Printed Log-Periodic Tree-Dipole Antenna (Plptda)," Progress In Electromagnetics Research M, Vol. 21, 19-32, 2011.
doi:10.2528/PIERM11080109
http://jpier.org/PIERM/pier.php?paper=11080109

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