A radiating system of a wireless device transmits and receives electromagnetic wave signals in a frequency region and comprises an external port, a radiating structure, and a radiofrequency system. The radiating structure includes: a ground plane layer with a connection point; a radiation booster with a connection point and being smaller than 1/30 of a free-space wavelength corresponding to a lowest frequency of the frequency region; and an internal port between the radiation booster connection point and the ground plane layer connection point. The radiofrequency system includes: a first port connected to the radiating structure's internal port; and a second port connected to the external port. An input impedance at radiating structure's disconnected internal port has a non-zero imaginary part across the frequency region. The radiofrequency system modifies impedance of the radiating structure to provide impedance matching to the radiating system within the frequency region at the external port.

A communication device is provided. The communication device comprises a metal back cover electrically connected to a system ground plane; a first antenna unit for generating a first operating frequency band of the communication device; a second antenna unit for generating a second operating frequency band of the communication device. The first antenna unit includes a first signal source electrically connected to a first metal frame via a first matching circuit. The second antenna unit includes a second signal source electrically connected to a second metal frame via a second matching circuit. The first matching circuit and the second matching circuit are configured to adjust bandwidths and frequency ratios of the first operating frequency band and the second operating frequency band.

A mobile terminal is disclosed. The mobile terminal includes a housing having an accommodation space, the housing including a metal frame; a mainboard received in the accommodation space and including a ground point provided on a surface thereof; an antenna system grounded through the mainboard. The antenna system includes a main antenna including a low-frequency feeding portion and a high-frequency feeding portion both of which are respectively connected to the metal frame; and a matching system configured on the metal frame for adjusting the frequency band of the antenna system. The high-frequency feeding portion is isolated from the low-frequency feeding portion through a LC filtering system.

According to an embodiment, an electronic device includes: a housing forming an inner space of the electronic device; a printed circuit board (PCB) disposed in the inner space and including a ground; a microphone module including a microphone housing disposed at a point on the PCB adjacent to a side surface of the housing, the microphone housing being electrically connected with the ground; a conductive member comprising a conductive material disposed, spaced apart from a surface of the microphone housing by a specified distance or less, and overlapping at least part of the microphone housing with reference to a first direction in which a rear surface of the electronic device faces, the conductive member being coupled and electrically connected with the microphone housing; and a wireless communication circuit disposed on the PCB, and the wireless communication circuit is configured to transmit and/or receive a signal of a specified frequency band, based on an electrical path including the conductive member and the microphone housing, by feeding the conductive member.

A wireless device comprises a radiating structure that comprises a ground plane layer etched on a PCB, including a clearance area nearby one edge of the PCB, and an antenna element mounted on the clearance area. The radiating structure is included in a radiating system that also includes a radiofrequency system comprising at least a matching network, including more than three components. The radiofrequency system connects the antenna element to a feeding line connected at its end to an external port. The antenna element features a maximum length within the 22-30 mm range to match the radiating system in the multiple frequency bands of operation. In general, a radiating system features extended bandwidth, typically including LTE700 bands or below. The antenna element may include two conductive adjacent surfaces with a convex shape connected between them.

An antenna structure includes a first ground element, a second ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a first capacitor. The first capacitor is coupled between the first radiation element and the first ground element. The second radiation element and the third radiation element are coupled to the second ground element, and are disposed adjacent to the first radiation element. The first radiation element is disposed between the second radiation element and the third radiation element. The fourth radiation element and the fifth radiation element are coupled between the first ground element and the second ground element. The first radiation element, the second radiation element, and the third radiation element are substantially surrounded by the first ground element, the second ground element, the fourth radiation element, and the fifth radiation element.

An antenna structure includes a first ground element, a second ground element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a first capacitor. The first capacitor is coupled between the first radiation element and the first ground element. The second radiation element and the third radiation element are coupled to the second ground element, and are disposed adjacent to the first radiation element. The first radiation element is disposed between the second radiation element and the third radiation element. The fourth radiation element and the fifth radiation element are coupled between the first ground element and the second ground element. The first radiation element, the second radiation element, and the third radiation element are substantially surrounded by the first ground element, the second ground element, the fourth radiation element, and the fifth radiation element.

Disclosed in an electronic device, which includes a housing that includes a first plate and a second plate facing a direction opposite the first plate, a conductive plate that is disposed in a first plane between the first plate and the second plate, and is parallel to the second plate, a wireless communication circuit that is disposed within the housing and is configured to transmit and/or receive a signal having a frequency ranging from 20 GHz to 100 GHz, a first electrical path having a first end electrically connected with the wireless communication circuit and a second end floated, the first electrical path including a first portion between the first end and the second end, a second electrical path having a third end electrically connected with the conductive plate and a fourth end floated, the second electrical path including a second portion between the third end and the fourth end.

Disclosed in an electronic device, which includes a housing that includes a first plate and a second plate facing a direction opposite the first plate, a conductive plate that is disposed in a first plane between the first plate and the second plate, and is parallel to the second plate, a wireless communication circuit that is disposed within the housing and is configured to transmit and/or receive a signal having a frequency ranging from 20 GHz to 100 GHz, a first electrical path having a first end electrically connected with the wireless communication circuit and a second end floated, the first electrical path including a first portion between the first end and the second end, a second electrical path having a third end electrically connected with the conductive plate and a fourth end floated, the second electrical path including a second portion between the third end and the fourth end.

An electronic device may have wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from peripheral conductive structures running along the edges of a device housing that are separated from a round by an elongated opening. The electronic device may have a central longitudinal axis that divides the antenna resonating element arm and other antenna structures into symmetrical halves that exhibit mirror symmetry with respect to the central longitudinal axis. The antenna structures may include symmetrical slot antenna resonating elements on opposing sides of the central longitudinal axis. Electrical components such as switches and antenna tuning inductors may be coupled to the antenna structures in a configuration that is symmetrical with respect to the central longitudinal axis. The electrical components may be used to place the antenna structures in an unflipped configuration or in a symmetrical flipped configuration.