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This paper describes two methods to cancel the effect of two kinds of leakage signals which may be presented when an antenna is measured in a planar near-field range. One method tries to reduce leakage bias errors from the receiver's quadrature detector and it is based on estimating the bias constant added to every near-field data sample. Then, that constant is subtracted from the data, removing its...
In this paper, the authors will discuss different design of a multiband compact antenna for the integration into the new multi function mobile phones. The antenna is matched to operate at GSM 920 MHz, WI-Fi 2.4 Ghz and HiperLan 5.1 GHz standards with low SAR levels. Return loss coefficient and radiation pattern of this antenna are computed in free space as well as in the presence of head. The specific...
A design and performances of a single-layer U-slot MSA have been presented in this paper. The antenna was fabricated easily compared to the conventional two-layer U-slot MSA. The test antenna has good return loss, gain and radiation pattern characteristics at the four operating frequencies and demonstrates that it is a good candidate as a multiband planar antenna.
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