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Symmetrical metal-rimmed mobile antenna with decoupling network for penta-band

Authors
Lee, Jae-GonLee, Jeong-Hae
Issue Date
Nov-2018
Publisher
WILEY
Keywords
decoupling network; metal-rimmed antenna; LTE mobile antenna
Citation
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.60, no.11, pp.2724 - 2730
Journal Title
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
Volume
60
Number
11
Start Page
2724
End Page
2730
URI
https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/3025
DOI
10.1002/mop.31466
ISSN
0895-2477
Abstract
A symmetrical metal-rimmed mobile antenna, which is designed to be separated into two antennas covering different bands, is proposed for penta-band in this letter. The proposed antenna consists of a gap-coupled quarter wavelength loop antenna to reduce the length of an antenna and a decoupling network of 90 degrees delay line to improve an isolation in the low band. Its resonant frequencies in low and high band can be controlled by the length of a feed line and a lumped series inductor, respectively. Since the slit of the metal rim is located at the center of the phone, the designed metal-rimmed antenna could be less affected by the hand compared to the case where the slit is located on the side of the phone. To verify the performance, we have simulated and measured the characteristics of the proposed antenna without and with the decoupling network such as reflection coefficients, far-field radiation patterns, and total efficiencies. Good agreement between the simulated and measured results is obtained.
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