CST – Computer Simulation Technology

Miniaturized LPDA Antenna for Portable Direction Finding Applications
Junho Yeo, Jong-Ig Lee
ETRI Journal
Volume: 34, Issue: 1, February 2012
Log-periodic dipole array (LPDA) antenna, miniaturization, direction finding (DF), bow-tie element, toploading
In this letter, a miniaturized log-periodic dipole array (LPDA) antenna operating from 1 GHz to 6 GHz is proposed for portable direction finding applications. To reduce the lateral size of an LPDA antenna, bow-tie elements and a toploading technique are utilized and spacing factor is decreased to reduce the spacing between the LPDA elements. The proposed miniaturized LPDA antenna has the measured gain and front-to-back ratio ranging from 1.2 dBi to 3 dBi and from 7 dB to 22 dB, respectively.

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