A dual band printed antenna that includes a metal substrate, an electrically isolated supporting element and a monopole antenna element. The metal substrate includes a slot. A side of the isolated supporting element is formed on the metal substrate. The monopole antenna element is formed on the other side of the isolated supporting element and corresponding to the position of the slot. The monopole antenna element includes a radiation part that includes a feed point and a ground part separated from the radiation part for a distance. The radiation part resonates with the slot to generate a radiation pattern of a first frequency band. The radiation part resonates itself to generate a radiation pattern of a second frequency band.

A dual band printed antenna that includes a metal substrate, an electrically isolated supporting element and a monopole antenna element. The metal substrate includes a slot. A side of the isolated supporting element is formed on the metal substrate. The monopole antenna element is formed on the other side of the isolated supporting element and corresponding to the position of the slot. The monopole antenna element includes a radiation part that includes a feed point and a ground part separated from the radiation part for a distance. The radiation part resonates with the slot to generate a radiation pattern of a first frequency band. The radiation part resonates itself to generate a radiation pattern of a second frequency band.

The present invention discloses an antenna and a terminal, which can extend antenna bandwidth. The antenna includes a capacitor component and at least one radiator, where one end of each radiator of the at least one radiator is connected to form a first node, the first node is connected to one end of the capacitor component to form a second node, and the second node is grounded; and the other end of the capacitor component receives a feed signal.

The present invention discloses an antenna and a terminal, which can extend antenna bandwidth. The antenna includes a capacitor component and at least one radiator, where one end of each radiator of the at least one radiator is connected to form a first node, the first node is connected to one end of the capacitor component to form a second node, and the second node is grounded; and the other end of the capacitor component receives a feed signal.

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.

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.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to an antenna structure for signal radiation in a transmission device. An apparatus for signal radiation includes a feeding unit configured to radiate a signal, and a guiding unit, that consists of a plurality of elements physically spaced from one another, configured to adjust a radiation pattern of the signal radiated by the feeding unit by generating a radio wave in a Transverse Electric (TE) mode. Further, the present invention also includes embodiments different from the above-described embodiment.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to an antenna structure for signal radiation in a transmission device. An apparatus for signal radiation includes a feeding unit configured to radiate a signal, and a guiding unit, that consists of a plurality of elements physically spaced from one another, configured to adjust a radiation pattern of the signal radiated by the feeding unit by generating a radio wave in a Transverse Electric (TE) mode. Further, the present invention also includes embodiments different from the above-described embodiment.

A communication system is provided, including one or more antennas coupled to multiple RF paths, one or more matching blocks, each block including multiple matching networks, a look-up table including characterization data according to frequency bands and conditions, and a controller configured to control the multiple matching networks by referring to the look-up table to provide optimum impedance for a frequency band selected and a condition detected during a time interval. The matching block may further include switches and adjustment circuits.

A communication system is provided, including one or more antennas coupled to multiple RF paths, one or more matching blocks, each block including multiple matching networks, a look-up table including characterization data according to frequency bands and conditions, and a controller configured to control the multiple matching networks by referring to the look-up table to provide optimum impedance for a frequency band selected and a condition detected during a time interval. The matching block may further include switches and adjustment circuits.