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International Journal of Antennas and Propagation
Volume 2013, Article ID 548610, 5 pages
Research Article

Simplified Printed Log-Periodic Dipole Array Antenna Fed by CBCPW

1School of Information and Science Technology, East China Normal University, Shanghai 200241, China
2Shanghai Normal University, Tianhua College, Shanghai 201815, China

Received 29 August 2013; Accepted 3 September 2013

Academic Editor: Xiao Ping Chen

Copyright © 2013 Guohua Zhai et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel simple approach for designing single-layer printed log-periodic dipole array (PLPDA) antenna fed by conductor-backed coplanar waveguide (CBCPW) is presented. The PLPDA antenna has the merits of wide bandwidth, low profile, and stable radiation pattern, which should be fed by the balanced line. The balanced line, created by the geometric features of the CBCPW, provides a balun with a considerably wide bandwidth with low profile, broad bandwidth, low insertion loss, and so forth. The prototype of the proposed CBCPW-fed printed log-periodic array at Ka band is designed and fabricated; the measured data are in good agreement with the simulated results.