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Apparatus comprising an antenna element, which efficiently performs at both a first resonant frequency band and a second resonant frequency band, method and computer program therefore
Apparatus comprising an antenna element, which efficiently performs at both a first resonant frequency band and a second resonant frequency band, method and computer program therefore
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机译:包括天线元件的设备,方法和计算机程序,该设备有效地在第一谐振频带和第二谐振频带两者上执行,
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摘要
An apparatus including a matching circuit; a first variable reactance component, having a first range of reactance values, and connected to the matching circuit and connectable to an antenna element operable in a first frequency band and a second frequency band; a second variable reactance component, having a second range of reactance values, and connected to the matching circuit; a detector for detecting a parameter, indicative of the impedance of the apparatus, over at least a part of the first range and second range of reactance values; and a controller configured to determine, using information provided by the detector, optimum ratios of second reactance values to first reactance values, at a frequency in the first frequency band, and configured to select a first optimum ratio when the second frequency band is greater than the first frequency band and configured to select a second different optimum ratio when the second frequency band is less than the first frequency band.
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