A Printed Log-Periodic Koch-Dipole Array (LPKDA)

Author

Anagnostou, Dimitris E. ; Papapolymerou, John ; Tentzeris, Manos M. ; Christodoulou, Christos G.

Author_Institution

Electr. Eng. Dept., South Dakota Sch. of Mines & Technol., Rapid City, SD

Volume

7

fYear

2008

fDate

6/30/1905 12:00:00 AM

Firstpage

456

Lastpage

460

Abstract

Koch-shaped dipoles are introduced for the first time in a wideband antenna design and evolve the traditional Euclidean log-periodic dipole array into the log-periodic Koch-dipole array (LPKDA). Antenna size can be reduced while maintaining its overall performance characteristics. Observations and characteristics of both antennas are discussed. Advantages and disadvantages of the proposed LPKDA are validated through a fabricated proof-of-concept prototype that exhibited approximately 12% size reduction with minimal degradation in the impedance and pattern bandwidths. This is the first application of Koch prefractal elements in a miniaturized wideband antenna design.

Keywords

broadband antennas; dipole antenna arrays; fractal antennas; log periodic antennas; microstrip antenna arrays; Koch prefractal elements; LPKDA; fabricated proof-of-concept prototype; printed log-periodic Koch-dipole antenna array; wideband antenna design; Koch; log-periodic Koch-dipole array (LPKDA); log-periodic dipole antenna array; log-periodic dipole array (LPDA); miniaturized antenna;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2008.2001765

Filename

4555261