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In this paper, the user effects on mobile terminal antennas at 28 GHz are statistically investigated with the parameters of body loss, coverage efficiency, and power in the shadow. The data are obtained from the measurements of 12 users in data and talk modes, with the antenna placed on the top and bottom of the chassis. In the measurements, the users hold the phone naturally. The radiation patterns...
Multiple-In-Multiple-Out (MIMO) o‚ffers great potential for increasing network capacity by exploiting spatial diversity with multiple antennas. Multiuser MIMO (MU-MIMO) further enables Access Points (APs) with multiple antennas to transmit multiple data streams concurrently to several clients. However, the uplink data transmission (from client to AP) of MU-MIMO is more vulnerable because its wide...
In this paper, we propose a dualband loop MIMO antenna with Wi-Fi 2.4/5.2/5.8 GHz bands for smart watch applications. The antenna is constituted of a 25-mm long folded loop strip and an L-shape coupling strip. Two antenna elements are put at the adjacent side of the ground and are vertical to the system ground. With the coupling strip, the loop antenna can generate a quarter-wavelength resonant mode...
In this paper, we investigate the SAR performance of an IFA antenna for the smart watch application. The SAR performance is evaluated by both body shape phantoms and FCC standard flat phantoms. Differences of the SAR performance in different phantoms are compared and discussed.
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