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http://dx.doi.org/10.5762/KAIS.2013.14.3.1445

Design of a Broadband Series-Fed Bow-tie Dipole Pair Antenna for Mobile Base Station  

Yeo, Junho (School of Computer and Communication Engineering, Daegu University)
Lee, Jong-Ig (Department of Electronics Engineering, Dongseo University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.3, 2013 , pp. 1445-1450 More about this Journal
Abstract
In this paper, a broadband series-fed bow-tie dipole pair (SBDP) antenna operating in the band of 1.7-2.7 GHz for mobile communication base station applications is proposed. The proposed antenna uses bow-tie-shaped dipole elements instead of straight strip dipole ones used in a conventional series-fed dipole pair (SDP) antenna. The simulation results show that the lowest operating frequency is shifted toward lower frequency as the flare angle increases, and so the lengths of the bow-tie dipole elements can be reduced in proportion to the frequency shift toward lower frequency. An SBDP antenna with a flare angle of 10 degrees is fabricated on an FR4 substrate (dielectric constant = 4.4 and thickness = 1.6 mm) and total width of the fabricated antenna is reduced by 10% compared to that of the conventional SDP antenna. The measured impedance bandwidth for voltage standing wave ratio (VSWR) < 2 is 48.8% (1.69-2.78 GHz), gain is 5.8-6.3 dBi, and the front-to-back ratio (FBR) is 14-17 dB.
Keywords
Base station antenna; Bow-tie shape; Broadband antenna; Compact antenna; Series-fed dipole pair antenna;
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