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http://dx.doi.org/10.6109/jkiice.2017.21.5.906

Broadband Quasi-Yagi Antenna with a Ring-type Balun for Indoor DTV Reception  

Lee, Jong-Ig (Division of Mechatronics Engineering, Dongseo University)
Yeo, Junho (School of Computer and Communication Engineering, Daegu University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.5, 2017 , pp. 906-912 More about this Journal
Abstract
In this paper, we studied a design method for a broadband 3-element quasi-Yagi antenna (QYA) for indoor digital television (DTV) reception. The proposed QYA employs a novel balun between a microstrip (MS) line and a coplanar strip (CPS) line feeding the driver dipole. The proposed balun is constructed by connecting the end of MS line to CPS line through a shorting pin, and the CPS and ground reflector are connected through a circular ring-type conductor. An antenna, as an design example for the proposed antenna, is designed for the operation in the frequency band of 470-806 MHz for terrestrial DTV. The antenna fabricated on an FR4 substrate with a size of $270mm{\times}150mm$ showed a good performance such as a frequency band of 470-820 MHz for a voltage standing wave ratio < 2, a gain > 4.0 dBi, and a front-to-back ratio > 8.4 dB over the DTV frequency band.
Keywords
quasi-Yagi antenna; ring-type balun; broadband antenna; DTV antenna;
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