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Mobile antenna performance improvement by ground mode tuning using a closed loop

Title
Mobile antenna performance improvement by ground mode tuning using a closed loop
Author
김형동
Keywords
mobile antennas; UHF antennas; loop antennas; antenna feeds; planar inverted-F antennas; mobile antenna performance improvement; ground mode tuning; modified ground plane; mobile devices; wireless communications; planar inverted-F antenna; feeding capacitor; antenna design; closed loop antenna; lumped inductors; ground mode resonant frequency; reference antenna; bandwidth 140 MHz; frequency 2; 34 GHz to 2; 66 GHz; bandwidth 320 MHz; efficiency 61 percent; efficiency 36 percent
Issue Date
2017-07
Publisher
INST ENGINEERING TECHNOLOGY-IET
Citation
IET MICROWAVES ANTENNAS & PROPAGATION, v. 11, no. 8, page. 1121-1126
Abstract
An antenna with a modified ground plane is proposed for modern mobile devices in the wireless communications. The proposed antenna design comprises a planar inverted-F antenna with a feeding capacitor (C-F) at the top side of the ground plane, and an additional closed loop with lumped inductors (L-1 and L-2) at the end of the ground plane. The closed loop is connected to the small ground plane for ground mode tuning so that the ground mode resonant frequency is equal to the operating frequency. In the simulation, the -10dB bandwidth is 140MHz (from 2.39 to 2.53GHz) without the closed loop, and is 320MHz (from 2.34 to 2.66GHz) with the proposed closed loop. The measured efficiency is 61% on average from 2.3 to 2.6GHz for the proposed antenna, and is 36% for the reference antenna. The ground mode resonance can be easily tuned, and the proposed technique is a versatile approach for antenna performance improvement.
URI
https://digital-library.theiet.org/content/journals/10.1049/iet-map.2016.0638https://repository.hanyang.ac.kr/handle/20.500.11754/114866
ISSN
1751-8725; 1751-8733
DOI
10.1049/iet-map.2016.0638
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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