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Small Internal Antenna Using Multiband, Wideband, and High-Isolation MIMO Techniques

Title
Small Internal Antenna Using Multiband, Wideband, and High-Isolation MIMO Techniques
Author
윤태열
Keywords
Diversity; internal antenna; MIMO; multiband
Issue Date
2013-02
Publisher
한국전자통신연구원(한국전자통신연구원)
Citation
ETRI journal, 35, 1, 51 - 57
Abstract
In this paper, a small internal antenna for a mobile handset is presented using multiband, wideband, and high-isolation multiple-input multiple-output techniques. The proposed antenna consists of three planar inverted-F antennas (PIFAs) that operate in the global system for mobile communication (GSM900), the digital communication system (DCS), the personal communication system (PCS), the universal mobile telecommunication system (UMTS), and wireless local area network (WLAN) bands with a physical size of 40 mm × 10 mm × 10 mm. A resonator attached to the folded PIFA creates dual resonances, achieving a wide bandwidth of approximately 460 MHz, covering the DCS, PCS, and UMTS bands; a meander shorting line is used to improve impedance matching. Additionally, a modified neutralization link is embedded between diversity antennas to enhance isolation, which results in a 6-dB improvement in the isolation and less than 0.1 in the envelope correlation coefficient evaluated from the far-field radiation patterns. Simulation and measurements demonstrate very similar results for S-parameters and radiation patterns. Peak gains show 3.73 dBi, 3.77 dBi, 3.28 dBi, 2.15 dBi, and 5.86 dBi, and antenna efficiencies show 56.15%, 72.15%, 68.59%, 52.92%, and 82.93% for GSM900, DCS, PCS, UMTS, and WLAN bands, respectively.
URI
http://onlinelibrary.wiley.com/doi/10.4218/etrij.13.0112.0183/abstract;jsessionid=67057311385D49B7DE60380E2FB54E43.f02t01http://hdl.handle.net/20.500.11754/44859
ISSN
1225-6463
DOI
10.4218/etrij.13.0112.0183
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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