Abstract: An antenna system applicable to a mobile communication device is provided in the present disclosure. The antenna system includes a metal frame; a grounding unit surrounded by the metal frame, and an internal antenna. One end of the grounding unit cooperates with the metal frame to form a clearance area, and the internal antenna is located in the clearance area. The internal antenna includes a feeding portion and a radiating portion; the radiating portion is spaced from the metal frame and is coupled to the metal frame. The feeding portion is connected to a feed source via a feed line.

Abstract: The present invention relates to a high-plasticity free-cutting zinc alloy, which includes the following components in percentage of weight: 1-10% Cu, 0.1-3.0% Bi, 0.01-1.5% Mn, 0.001-1% Ti and/or 0.01-0.3% Zr, optional component X, optional component Y, and a remainder component being Zn having less than or equal to 0.01% unavoidable impurities, wherein component X amounts to 0-1.0% and includes at least one element selected from Cr, V, Nb, Ni and Co; and component Y amounts to 0-1.0% and includes at least one element selected from B, As, P and rare earth metal. Compared with existing zinc alloys, the present invention has good machinability, higher plasticity and improved processability, which can be widely used in F connectors, pen manufacturing, socket connectors, locks and etc.

Abstract: An antenna module for a mobile communication device is provided in the present disclosure. The antenna module includes a main board, a feed point and at least one ground point provided on the main board, a metal radiator opposite to the main board and electrically connected with the at least one ground point of the main board and a capacitive coupling feed part attached to a surface of the metal radiator and facing the main board, the capacitive coupling feed part being electrically connected to the feed point of the main board via a connecting member.

Abstract: An antenna system applicable to a mobile communication device is provided in the present disclosure. The antenna system includes a metal frame; a grounding unit surrounded by the metal frame, and an internal antenna. One end of the grounding unit cooperates with the metal frame to form a clearance area, and the internal antenna is located in the clearance area. The internal antenna includes a feeding portion and a radiating portion; the radiating portion is spaced from the metal frame and is coupled to the metal frame. The feeding portion is connected to a feed source via a feed line.

Abstract: The present invention relates to a high-plasticity free-cutting zinc alloy, which includes the following components in percentage of weight: 1-10% Cu, 0.1-3.0% Bi, 0.01-1.5% Mn, 0.001-1% Ti and/or 0.01-0.3% Zr, optional component X, optional component Y, and a remainder component being Zn having less than or equal to 0.01% unavoidable impurities, wherein component X amounts to 0-1.0% and includes at least one element selected from Cr, V, Nb, Ni and Co; and component Y amounts to 0-1.0% and includes at least one element selected from B, As, P and rare earth metal. Compared with existing zinc alloys, the present invention has good machinability, higher plasticity and improved processability, which can be widely used in F connectors, pen manufacturing, socket connectors, locks and etc.

Abstract: A mobile terminal is disclosed. The mobile terminal includes a metal back cover; an NFC coil located under the metal cover; a first slot set on the metal cover, the first slot including a plurality of slot cells set intervally along a same straight line, the slot cells dividing the metal back cover into a top and a body portion; and a second slot set on the top. A part of the NFC coil is located within a projection area of the top.

Abstract: A mobile phone antenna system includes a metal rear cover, a circuit board, a first antenna module and a second antenna module connected electrically with the circuit board. The metal rear cover includes a top cover, a middle cover with a distance from the top cover, and a connector used for connecting electrically the top cover and the middle cover. The circuit board is provided with several grounding points. The top cover takes the connector as dividing point. The first antenna module and the second antenna module are connected electrically with the top cover at one side of the connector. A number of second match circuits are connected electrically with the grounding points, and the mobile phone antenna system has better adjusting ability.

Abstract: An NFC antenna structure is disclosed in the present disclosure. The NFC antenna structure includes a metal back cover including a side frame, and including a plurality of through-holes; a NFC coil positioned below the metal back cover. The NFC coil is located at least partially in a normal projection area of the through-holes, and the side frame is provided with a plurality of slits communicating with the through-holes.

Abstract: An antenna assembly is disclosed. The antenna assembly includes a radiation body, an antenna feed portion, a RF feed portion, a first branch having one end electrically connecting to the antenna feed portion, and another end electrically connects to a first feed point of the radiation body, the first feed point dividing the radiation body into a first radiation portion and a second radiation portion. The antenna assembly further includes a second branch electrically connecting to a second feed point of the second radiation portion, an impedance matching circuit coupled between the antenna feed portion and the RF feed portion. The impedance matching circuit receives the low frequency signals and matches the impedance, then feeds to the antenna feed portion.

Abstract: The present disclosure provides an antenna and an electronic device using same. The antenna includes an antenna radiating element for radiating signals, a capacitive feed plate separated from and substantially parallel to the antenna radiating element for carrying out capacitive feed on the antenna radiating element, and a FPC antenna electrically connecting with the capacitive feed plate for feeding for the capacitive feed plate. The FPC antenna includes a plate-shaped main body, a feeding end, a ground end, an extending portion for being electrically connected with the capacitive feed plate, and a feeding strip extending vertically from the extending portion for improving the low-frequency performance of the antenna.

Abstract: An antenna module for a mobile communication device is provided in the present disclosure. The antenna module includes a main board, a feed point and at least one ground point provided on the main board, a metal radiator opposite to the main board and electrically connected with the at least one ground point of the main board and a capacitive coupling feed part attached to a surface of the metal radiator and facing the main board, the capacitive coupling feed part being electrically connected to the feed point of the main board via a connecting member.

Abstract: An antenna assembly is disclosed. The antenna assembly includes a radiation body, an antenna feed portion, a RF feed portion, a first branch having one end electrically connecting to the antenna feed portion, and another end electrically connects to a first feed point of the radiation body, the first feed point dividing the radiation body into a first radiation portion and a second radiation portion. The antenna assembly further includes a second branch electrically connecting to a second feed point of the second radiation portion, an impedance matching circuit coupled between the antenna feed portion and the RF feed portion. The impedance matching circuit receives the low frequency signals and matches the impedance, then feeds to the antenna feed portion.

Abstract: The present disclosure provides an antenna and an electronic device using same. The antenna includes an antenna radiating element for radiating signals, a capacitive feed plate separated from and substantially parallel to the antenna radiating element for carrying out capacitive feed on the antenna radiating element, and a FPC antenna electrically connecting with the capacitive feed plate for feeding for the capacitive feed plate. The FPC antenna includes a plate-shaped main body, a feeding end, a ground end, an extending portion for being electrically connected with the capacitive feed plate, and a feeding strip extending vertically from the extending portion for improving the low-frequency performance of the antenna.

Abstract: The present invention relates to a photolabile compound including a coumarin family caging group covalently bound to an organic moiety containing a carboxyl group, an amino group, a sulfhydryl group, and/or a hydroxyl group. The photolabile compound, upon absorbing visible light, releases the organic moiety. Also disclosed is a method of making a photolabile compound that releases a biologically active compound upon absorbing visible light by providing an organic moiety and binding a coumarin family caging group to the organic moiety under conditions effective to make the photolabile compound. The present invention also relates to a method of obtaining a biologically active compound in a sample. The method involves adding to a sample a photolabile compound including a coumarin family caging group covalently bound to an organic moiety. The sample is then illuminated with visible light under conditions effective to obtain a biologically active compound including the organic moiety.

Abstract: The present invention relates to a photolabile compound including a coumarin family caging group covalently bound to an organic moiety containing a carboxyl group, an amino group, a sulfhydryl group, and/or a hydroxyl group. The photolabile compound, upon absorbing visible light, releases the organic moiety. Also disclosed is a method of making a photolabile compound that releases a biologically active compound upon absorbing visible light by providing an organic moiety and binding a coumarin family caging group to the organic moiety under conditions effective to make the photolabile compound. The present invention also relates to a method of obtaining a biologically active compound in a sample. The method involves adding to a sample a photolabile compound including a coumarin family caging group covalently bound to an organic moiety. The sample is then illuminated with visible light under conditions effective to obtain a biologically active compound including the organic moiety.