Small Internal Antenna Using Multiband, Wideband, and High-Isolation MIMO Techniques
| Autor: | Sang Hyeong Kim, Yoon Byung Chae, Zhe Jun Jin, Tae-Yeoul Yun |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Engineering
General Computer Science business.industry Bandwidth (signal processing) MIMO Electrical engineering Impedance matching Communications system Handset Electronic Optical and Magnetic Materials law.invention law Electronic engineering Wi-Fi Electrical and Electronic Engineering Wideband business UMTS frequency bands |
| Zdroj: | ETRI Journal. 35:51-57 |
| ISSN: | 1225-6463 |
| Popis: | 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 Sparameters 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. |
| Databáze: | OpenAIRE |
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