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http://dx.doi.org/10.6109/jkiice.2014.18.3.497

Design of Broadband Planar Dipole Antenna for Indoor Digital TV Reception  

Lee, Jong-Ig (Department of Electronics Engineering, Dongseo University)
Yeo, Junho (School of Computer and Communication Engineering, Daegu University)
Park, Jin-Taek (Department of Mobile Communication Engineering, Changshin University)
Abstract
In this paper, a design method for a broadband planar dipole antenna for terrestrial digital television (DTV) reception is studied. The dipole is modified to half bow-tie type for size reduction. The balun between feeding microstrip line and coplanar strip (CPS) line is implemented with a rectangular patch inserted along the center of the CPS line. The proposed antenna is the structure of dual resonances, one is due to the dipole and the other is due to the CPS line attached by the balun. The effects of various geometrical parameters on the antenna performance are examined, and the antenna is designed for terrestrial DTV band (470-806 MHz). The prototype antenna is fabricated on an FR4 substrate with a size of $95mm{\times}178mm$, and tested experimentally to verify the results of this study.
Keywords
planar dipole antenna; half bow-tie dipole; broadband antenna; balun; digital TV antenna;
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