Abstract: An antenna structure includes a metal shell including a grounded middle frame provided with a main body and sides bent and extending from two sides of the main body and a radiating part serving as an antenna radiating body. The radiating part forms an insulation filled gap with the middle frame. Two ends of the radiating part are arranged opposed to each other for forming an insulation filled breaking joint. A circuit board is arranged below the metal shell, and one side of the circuit board adjacent to the radiating part forms a clearance zone between the circuit board and the radiating part. The antenna further includes a feeding point, at least one ground point, and a tuning circuit. The feeding point is close to the breaking joint, and the ground point includes a first ground point and a second ground point.

Abstract: An antenna system applicable to a mobile communication device is provided in the present disclosure. The antenna system includes a metal shell with a metal frame and a metal back cover, a printed circuit board (PCB) housed in the metal shell, and an antenna part with a first feed point and a second feed point. A first break point and a second break point are formed at two opposite sides of the metal frame; a first gap and a second gap are respectively formed at two opposite sides of the metal back cover for defining a first clearance area and a second clearance area. The first feed point is located in the first clearance area and contacts a left frame portion of the metal frame; the second feed point is located in the second clearance area and contacts a right frame portion of the metal frame.

Abstract: An antenna structure includes a metal shell including a grounded middle frame provided with a main body and sides bent and extending from two sides of the main body and a radiating part serving as an antenna radiating body. The radiating part forms an insulation filled gap with the middle frame. Two ends of the radiating part are arranged opposed to each other for forming an insulation filled breaking joint. A circuit board is arranged below the metal shell, and one side of the circuit board adjacent to the radiating part forms a clearance zone between the circuit board and the radiating part. The antenna further includes a feeding point, at least one ground point, and a tuning circuit. The feeding point is close to the breaking joint, and the ground point includes a first ground point and a second ground point.

Abstract: An antenna module applicable to a mobile device is provided in the present disclosure. The antenna module includes a metal frame, a circuit board surrounded by the metal frame, and an antenna portion on the circuit board. The circuit board includes a main board and a ground board placed on the main board. The antenna portion includes at least one low frequency (LF) ground point and at least one high frequency (HF) ground point arranged on the ground board, and a feed point arranged on the main board. The at least one LF ground point and the at least one HF ground point contact the metal frame; a first current path length between the feed point and the at least one LF ground point is greater than a second current path length between the feed point and the at least one HF ground point.

Abstract: Provided is an LTE full-band cellphone antenna structure, including a ground plate, a circuit board having a feeding point, a feeding terminal matching circuit provided on the circuit board and a metal unit surrounding the circuit board and the ground plate. The metal unit includes a grounding portion electrically connected with the ground plate and a non-grounding portion electrically disconnected with the grounding portion. The feeding point is electrically connected with the non-grounding portion so that the non-grounding portion serves as a middle-high frequency radiator. A gap is provided between the non-grounding portion and the ground plate, and the ground plate is excited in a coupling manner so as to generate a current, such that the ground plate serves as a low frequency radiator. The antenna of the present disclosure covers all LTE frequency bands, which has advantages of less tuning difficulty and less influence by processing accuracy.

Abstract: An antenna system with a full metal back cover is provided in the present disclosure. The antenna system includes a metal back cover with a main body, a first sidewall and a second sidewall opposite to each other, a circuit board with a main ground point, a first antenna module and a second antenna module electrically connected to the circuit board. A first gap is formed between the first sidewall and the main body, and a second gap is formed between the second sidewall and the main body; the metal back cover is divided into a first metal portion including the first sidewall and a second metal portion including the second sidewall. The first metal portion includes a top slit penetrating through an edge of the first sidewall, and the second metal portion includes a bottom slit penetrating through an edge of the second sidewall.

Abstract: An antenna module applicable to a mobile device is provided in the present disclosure. The antenna module includes a metal frame, a circuit board surrounded by the metal frame, and an antenna portion on the circuit board. The circuit board includes a main board and a ground board placed on the main board. The antenna portion includes at least one low frequency (LF) ground point and at least one high frequency (HF) ground point arranged on the ground board, and a feed point arranged on the main board. The at least one LF ground point and the at least one HF ground point contact the metal frame; a first current path length between the feed point and the at least one LF ground point is greater than a second current path length between the feed point and the at least one HF ground point.

Abstract: An antenna system applicable to a mobile communication device is provided in the present disclosure. The antenna system includes a metal shell with a metal frame and a metal back cover, a printed circuit board (PCB) housed in the metal shell, and an antenna part with a first feed point and a second feed point. A first break point and a second break point are formed at two opposite sides of the metal frame; a first gap and a second gap are respectively formed at two opposite sides of the metal back cover for defining a first clearance area and a second clearance area. The first feed point is located in the first clearance area and contacts a left frame portion of the metal frame; the second feed point is located in the second clearance area and contacts a right frame portion of the metal frame.