Abstract: The present disclosure provides an electronic device, a mobile terminal and an antenna assembly. The electronic device includes: a case defining an accommodating groove; a movable support slidably connected to the case, and capable of moving out of or retracting into the accommodating groove; and a first antenna installed on the movable support. Since the first antenna may be ejected out of the accommodating groove along with the movable support, influence of other components disposed inside the electronic device on the first antenna may be reduced. Thus, the implementation of the present disclosure may improve antenna performance of the electronic device.

Abstract: A metal rear cover for the terminal (100) and a terminal are provided. The metal rear cover for the terminal (100) includes a base plate (10) provided with at least one micro-seam band (20), the micro-seam band (20) is provided with a plurality of micro-seams (21), and the at least one micro-seam band (20) divides the base plate (10) into at least two radiation parts (30). At least one of the at least two radiation parts (30) is configured to be coupled to a matching circuit (1) and to receive a feeding signal via the matching circuit (1).

Abstract: The present disclosure provides an antenna device including a radio frequency transceiving circuit; a matching circuit, electrically coupled to the radio frequency transceiving circuit; and a metal housing, the edge of the metal housing including an arc-shaped section, the metal housing being provided with at least one micro-seam band, the at least one micro-seam band including an arc-shaped part, said arc-shaped part matching the arc-shaped section of the metal housing, the radio frequency transceiving circuit being electrically coupled to the metal housing by means of the matching circuit, such that the metal housing is used as a radiating body of the antenna device, the metal housing being grounded by means of a grounding wire, the grounding wire being provided with an on-off switch configured to control the grounding wire. The present disclosure further provides a mobile terminal.

Abstract: A starting and stopping method for a static synchronous series compensator (SSSC) is provided. A starting process includes: connecting a converter to a shunt transformer, and closing a breaker which connect the AC system and the shunt transformer to charge the converter until the DC voltage is stable; opening the breaker, and connecting the converter to a series transformer through a change-over switch; and deblocking the converter, and controlling a current of a bypass switch of the series transformer to approach zero. A stopping process includes: switching a control mode of the converter to make the current of the bypass switch approaches zero when closed the bypass switch, then controlling a current of the series transformer to be gradually reduced to zero to make the series transformer out of service, and blocking the converter.

Abstract: The present disclosure provides an electronic device, a mobile terminal and an antenna assembly. The electronic device includes: a case defining an accommodating groove; a movable support slidably connected to the case, and capable of moving out of or retracting into the accommodating groove; and a first antenna installed on the movable support. Since the first antenna may be ejected out of the accommodating groove along with the movable support, influence of other components disposed inside the electronic device on the first antenna may be reduced. Thus, the implementation of the present disclosure may improve antenna performance of the electronic device.

Abstract: The present disclosure provides a conductive cover, a housing assembly and a terminal. The conductive cover includes a first portion, a second portion, a conductive suspended strip and a conductive connecting member. A slot is defined between the second portion and the first portion. The conductive suspended strip is located in the slot and has a length equal to a length of the slot. An insulating layer is provided between the conductive suspended strip and the first portion, and another insulating layer is provided between the conductive suspended strip and the second portion. The conductive connecting member bridges over the slot, is electrically connected with the first portion and the second portion, and is insulated from the conductive suspended strip.

Abstract: A metal rear cover for a terminal and a terminal are provided. The metal rear cover includes a base plate provided with at least one micro-seam band, and the micro-seam band includes a plurality of micro-seams. The plurality of micro-seams are arranged equidistantly, a distance between two adjacent micro-seams is larger than a width of the micro-seam, the at least one micro-seam band divides the base plate into at least two radiation parts including a first radiation part and a second radiation part. A conducting switch is coupled between the first radiation part and the second radiation part, and configured to disconnect or connect the first radiation part with the second radiation part, so that transceiving of different preset frequency ranges can be achieved by the metal rear cover, when the conducting switch disconnects or connects the first radiation part with the second radiation part.

Abstract: A metal rear cover for a terminal and a terminal are provided. The metal rear cover includes a base plate provided with at least one micro-seam band, and the micro-seam band includes a plurality of micro-seams. The plurality of micro-seams are arranged equidistantly, a distance between two adjacent micro-seams is larger than a width of the micro-seam, the at least one micro-seam band divides the base plate into at least two radiation parts including a first radiation part and a second radiation part. A conducting switch is coupled between the first radiation part and the second radiation part, and configured to disconnect or connect the first radiation part with the second radiation part, so that transceiving of different preset frequency ranges can be achieved by the metal rear cover, when the conducting switch disconnects or connects the first radiation part with the second radiation part.

Abstract: The present disclosure provides an antenna device including a radio frequency transceiving circuit; a matching circuit electrically coupled to the radio frequency transceiving circuit; and a metal housing provided with at least one micro-seam band, an edge of the metal housing including an arc-shaped section, the at least one micro-seam including an arc-shaped part matching the arc-shaped section. The radio frequency transceiving circuit is electrically coupled to the metal housing through the matching circuit, such that the metal housing is used as a radiating body of the antenna device. The metal housing is grounded through a grounding wire provided with an on-off switch configured to control the grounding wire. The micro-seam band includes three to twenty arc-shaped micro-seams, a metal strip is formed between the adjacent micro-seams, and the metal strip has the same material as the metal housing. The present disclosure further provides a mobile terminal.

Abstract: A metal rear cover for the terminal (100) and a terminal are provided. The metal rear cover for the terminal (100) includes a base plate (10) provided with at least one micro-seam band (20), the micro-seam band (20) is provided with a plurality of micro-seams (21), and the at least one micro-seam band (20) divides the base plate (10) into at least two radiation parts (30). At least one of the at least two radiation parts (30) is configured to be coupled to a matching circuit (1) and to receive a feeding signal via the matching circuit (1).

Abstract: The present disclosure provides an antenna device including a radio frequency transceiving circuit; a matching circuit, electrically coupled to the radio frequency transceiving circuit; and a metal housing, the edge of the metal housing including an arc-shaped section, the metal housing being provided with at least one micro-seam band, the at least one micro-seam band including an arc-shaped part, said arc-shaped part matching the arc-shaped section of the metal housing, the radio frequency transceiving circuit being electrically coupled to the metal housing by means of the matching circuit, such that the metal housing is used as a radiating body of the antenna device, the metal housing being grounded by means of a grounding wire, the grounding wire being provided with an on-off switch configured to control the grounding wire. The present disclosure further provides a mobile terminal.

Abstract: A unified power flow controller for a double-circuit transmission line comprises at least one parallel-connection transformer, three current converters, at least two series-connection transformers, a parallel-connection side switching circuit, a series-connection side switching circuit and a direct current common bus. The series-connection transformers connected with at least one group of by-pass switches in parallel. The three current converters connected to each loop line in series after being connected with at least one series-connection transformer through the series-connection side switching circuit. The three current converters connected to an alternating current system after connected with at least one parallel-connection transformer through a parallel-connection side switching circuit starting circuit. The three current converters are connected to the direct current common bus through a transfer switch.

Abstract: The present disclosure provides a conductive cover, a housing assembly and a terminal. The conductive cover includes a first portion, a second portion, a conductive suspended strip and a conductive connecting member. A slot is defined between the second portion and the first portion. The conductive suspended strip is located in the slot and has a length equal to a length of the slot. An insulating layer is provided between the conductive suspended strip and the first portion, and another insulating layer is provided between the conductive suspended strip and the second portion. The conductive connecting member bridges over the slot, is electrically connected with the first portion and the second portion, and is insulated from the conductive suspended strip.

Abstract: A starting and stopping method for a static synchronous series compensator (SSSC) is provided.

Abstract: A unified power flow controller for a double-circuit transmission line comprises at least one parallel-connection transformer, three current converters, at least two series-connection transformers, a parallel-connection side switching circuit, a series-connection side switching circuit and a direct current common bus. The series-connection transformers connected with at least one group of by-pass switches in parallel. The three current converters connected to each loop line in series after being connected with at least one series-connection transformer through the series-connection side switching circuit. The three current converters connected to an alternating current system after connected with at least one parallel-connection transformer through a parallel-connection side switching circuit starting circuit. The three current converters are connected to the direct current common bus through a transfer switch.