Title :
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
fDate :
6/30/1905 12:00:00 AM
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2008.2001765
