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http://dx.doi.org/10.12673/jant.2021.25.6.536

A triple band printed monopole antenna with a bent branch strips for WiFi / 5G  

Min-Woo Kim (Human Resources Team, Defense Agency for Technology and Quality)
Dong-Gi Shin (Department of Electronic Engineering, Kumoh National Institute of Technology)
Oh-Rim Ryu (RF Team 1, ONETECH)
Young-Soon Lee (Department of Electronic Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of Advanced Navigation Technology / v.25, no.6, 2021 , pp. 536-542 More about this Journal
Abstract
In this paper, we proposed a triple band printed monopole antenna with a bent branch strips for WiFi / 5G. An antenna structure in which bent strips for generating multiple resonance are attached in the form of branches was newly proposed based on a typical monopole strip vertically erected as a triple band antenna structure. The proposed antenna is designed on a FR-4 substrate with dielectric constant 4.3, thickness of 1.6 mm, and size of 28×40 mm2. The measured impedance bandwidth is 430 MHz (2.22~2.65 GHz) in the 2.4 GHz WLAN, 450 MHz (3.38~3.83 GHz) in the 3.5 GHz and 2390 MHz (4.95~7.34 GHz), In particular, it has been observed that antenna has a stable omnidirectional radiation patterns as well as gain of 1.537 dBi, 1.878 dBi and 2.337 dBi in the entire frequency band of interest.
Keywords
WiFi; 5G; Microstrip feed; Printed monopole; Bent branch strip; Omni-directional radiation patterns;
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