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Typically, geometrically symmetric 2-port Multiple Input - Multiple Output (MIMO) antennas for LTE-enabled small mobile wireless devices feature radiation modes with significantly different radiation quality factors. It is difficult to precisely match radiation modes over the desired frequency band. Therefore, a solution for low-loss electrical tuning is of interest. The new solution, reported in...
A geometrically symmetric 2-port downlink (DL)- multiple-input–multiple-output (MIMO) antenna for Universal Serial Bus (USB) dongles is described. The design makes use of a center-tapped inductance to independently excite both the common mode and the differential mode. The solution allows for separate, mutually independent, common-mode and differential- mode matching networks. So as to maximize bandwidth...
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