Patent ID: 9509041
Filing Date: 2016-11-29
CPC Classification: H01Q

Claim Text:
1. A mobile communication device, consisting essentially of: a metallic rear cover having a planar main plate and a side plate perpendicularly extending from a edge of the metallic rear cover, a circuit board arranged within the rear cover and an antenna; the antenna consisting essentially of a radiation source connecting to the metallic rear cover and a circuitry portion on the circuit board; the radiation source, functioning as a radiator of the antenna, consisting essentially of a first metallic piece connecting to the metallic rear cover, a second metallic piece connecting to the first metallic piece and the metallic rear cover, an insulating frame for generating an isolation between any two of the metallic rear cover, the first metallic piece and the second metallic piece, with narrow slots formed between the second metallic piece and the sidewalls, and a first conductor positioned on the insulating frame for electrically connecting the first metallic piece to the second metallic piece; wherein, the first metallic piece is perpendicular to the second metallic piece and parallel to the planar main plate, the first metallic piece and the second metallic piece are planar and elongated, the second metallic piece forms a end wall of the mobile communication device, and the first metallic piece and the second metallic piece are located with respect to each other such that forms a narrow and elongated gap that is spanned only by the first conductor; the circuitry portion consisting essentially of a feed portion connecting to the radiation source, a grounding portion, and a controlling circuitry for controlling the grounding portion to connect or disconnect to the second metallic piece, the feed portion connecting to the second metallic piece of the radiation source.