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| Content Provider | IET Digital Library |
|---|---|
| Author | Chung, Ming An |
| Abstract | An internal etching for three-dimensional structures (ETS) antenna capable of operating in the 810–960, 1370–1450 and 1710–2630 MHz bands, respectively, for long-term evolution (LTE)/wideband code division multiple access (WCDMA)/2.4 GHz industrial, scientific and medical (ISM) band operations suitable for being embedded within a smart wrist wearable wireless mobile communication device is proposed. The proposed antenna radiation efficiency can achieve 37.8–55.3% from 810–960 MHz, 53.1–92.63% from 1370–1450 MHz and 52.9–93.1% from 1710–1630 MHz for LTE/WCDMA bands and 87.4% for ISM band without the hand phantom in the free space condition. The antenna radiation efficiency of the LTE/WCDMA and ISM bands is reduced by half because of the hand phantom with lossy material properties. Furthermore, the health risk related to exposure to electromagnetic radiation, the specific absorption rates of the device are evaluated and the results were far below the limits required by the Federal Communications Commission (FCC) organisation. The embedded three-dimensional (3D) multi-band antenna can be adapted for the smart wrist wearable wireless mobile communication device. This study breaks the pattern that wearable devices must work with mobile phones. The wearable device proposed herein can directly communicate with the carrier base station independently. |
| Starting Page | 93 |
| Ending Page | 100 |
| Page Count | 8 |
| ISSN | 17518725 |
| Volume Number | 14 |
| e-ISSN | 17518733 |
| Issue Number | Issue 1, Jan (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/14/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5486 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2019-09-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Adaptive Antenna Array Antenna Array Antenna Radiation Pattern Artificially Realistic Left Hand Phantom Assembly Materials Broadband Network Code Division Multiple Access Embedded 3D Multiband Antenna Etching ETS Antenna ETS Process Technology FCC Organisation Federal Communication Commission Organisation Frequency 1370.0 MHz to 1450.0 MHz Frequency 1630.0 MHz to 1710.0 MHz Frequency 1710.0 MHz to 2630.0 MHz Frequency 810.0 MHz to 960.0 MHz Industrial Scientific And Medical Band Operation Internal Etching LCD Screen Long Term Evolution Long-term Evolution-wideband Code Division Multiple Access LTE-WCDMA-ISM Band Operation Mobile Radio System Multifrequency Antenna Multiple Access Communication Phantoms Plastic Bottom Frame Cover Plastic Top Frame Cover Plastics Semiconductor Technology Smart Wrist Wearable Wireless Mobile Communication Device Design Spring-loaded Connectors Surface Topography Measurement Three-dimensional Multiband Antenna Radiation Efficiency Three-dimensional Structure Antenna Touch Panel UHF Antenna Wrist-worn Antenna Device |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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