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A frame antenna based on the inverted-F antenna (IFA) structure for the LTE (long term evolution) metal-casing smartphone is presented. The antenna uses a frame section along the short edge of the metal casing as the IFA's radiating strip. There are no gaps required at the two side edges of the smartphone. The frame section is connected to a feed circuit board (FCB) to achieve wider bandwidth. With...
A small-size half-loop frame antenna integrated with a USB connector and having a 3-mm narrow ground clearance for the LTE metal-framed smartphone is presented. The frame antenna uses a part of metal frame as antenna's radiator and is promising to achieve wide bandwidths for mobile communication. The frame antenna can also integrate with a USB connector, which serves as the data port of the smartphone...
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