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A simple open slot antenna for the LTE/WWAN operation is presented for the smartphone with a metallic frame. A novel feeding network integrated with a chip capacitor is used to excite the antenna, and the bandwidth of the lower band can be greatly enhanced. Two wide bands for the proposed antenna are easy to adjust and can cover the LTE/WWAN operation in the 698–960 MHz and 1710–2690 MHz bands.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.