A wireless device includes at least one radiating system having a redundancy system and a combining system. The redundancy system includes two or more radiation boosters. The radiating system is characterized by its simplicity that facilitates its integration within the wireless device and achieves enhanced radio-electric performance in at least one frequency region of the electromagnetic spectrum, which may include multiple wireless services. The combining system enables a substantially balanced power distribution among the radiation boosters of the redundancy system, and the radiating system provides an increased robustness to human loading effects in at least one frequency region of operation.

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).

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).

A broadband blade monopole antenna is disclosed. The broadband blade monopole antenna includes a body portion that is substantially flat to define a two-dimensional plane that the body portion extends along. The body portion defines an outer perimeter having four sides. The four sides are grouped into two pairs of equal-length sides positioned directly adjacent to each other. The broadband blade monopole antenna provides at least about 100% impedance bandwidth.

A broadband blade monopole antenna is disclosed. The broadband blade monopole antenna includes a body portion that is substantially flat to define a two-dimensional plane that the body portion extends along. The body portion defines an outer perimeter having four sides. The four sides are grouped into two pairs of equal-length sides positioned directly adjacent to each other. The broadband blade monopole antenna provides at least about 100% impedance bandwidth.

An antenna structure of an external antenna device includes an elongated substrate, a grounding segment, an antenna segment, a matching module, and a low-frequency extending segment, the latter four of which are disposed on the substrate. The grounding segment and the low-frequency extending segment are respectively arranged on two opposite sides of the antenna segment. The antenna segment includes a feeding portion, a high-frequency portion, and a low-frequency portion. The high-frequency portion and the low-frequency portion are electrically connected to the feeding portion and the grounding segment via the matching module. The low-frequency portion and the low-frequency extending segment each has a signal path, and a total length of the two signal paths is 0.3750.625 times of a wavelength corresponding to a center frequency of a low-frequency band. The low-frequency extending segment is arranged apart from and is electrically coupled to the low-frequency portion.

A mobile device including a ground plane, a grounding branch, wherein a slot is formed between the ground plane and the grounding branch, a connecting element, wherein the grounding branch is electrically coupled through the connecting element to the ground plane and a feeding element, extending across the slot, and electrically coupled between the grounding branch and a signal source, wherein an antenna structure is formed by the grounding branch and the feeding element.

A mobile device including a ground plane, a grounding branch, wherein a slot is formed between the ground plane and the grounding branch, a connecting element, wherein the grounding branch is electrically coupled through the connecting element to the ground plane and a feeding element, extending across the slot, and electrically coupled between the grounding branch and a signal source, wherein an antenna structure is formed by the grounding branch and the feeding element.

Disclosed is an electronic device including an antenna including a radiating portion and a feeding portion connected to the radiating portion; a tunable element electrically connected to the radiating portion and configured to influence an electrical length of the radiating portion with respect to a specified frequency; an amplifier electrically connected to the feeding portion and configured to amplify a signal to be transmitted to an external electronic device through the radiating portion; and a control circuit electrically connected with the antenna, the tunable element, and the amplifier. The control circuit is configured to determine strength of a signal reflected from the radiating portion while the signal is transmitted to the external electronic device through the radiating portion; and adjust a value of the tunable element to reduce the strength of the reflected signal.

Disclosed is an electronic device including an antenna including a radiating portion and a feeding portion connected to the radiating portion; a tunable element electrically connected to the radiating portion and configured to influence an electrical length of the radiating portion with respect to a specified frequency; an amplifier electrically connected to the feeding portion and configured to amplify a signal to be transmitted to an external electronic device through the radiating portion; and a control circuit electrically connected with the antenna, the tunable element, and the amplifier. The control circuit is configured to determine strength of a signal reflected from the radiating portion while the signal is transmitted to the external electronic device through the radiating portion; and adjust a value of the tunable element to reduce the strength of the reflected signal.