An antenna structure utilizing as radiating elements only the metal frame of an electronic device includes a metal frame, a feeding portion, and a ground point. The metal frame defines a first gap and a second gap. The metal frame forms a radiating portion, a first coupling portion, and a second coupling portion through the first gap and the second gap. When the feed supplies current, the current flows through the radiating portion and, being coupled to the first coupling portion and second coupling portion through the first and second gaps, first, second, and third operating modes at different frequencies can be invoked to generate wireless signals in first, second, and third LTE-A frequency bands.

An antenna structure utilizing as radiating elements only the metal frame of an electronic device includes a metal frame, a feeding portion, and a ground point. The metal frame defines a first gap and a second gap. The metal frame forms a radiating portion, a first coupling portion, and a second coupling portion through the first gap and the second gap. When the feed supplies current, the current flows through the radiating portion and, being coupled to the first coupling portion and second coupling portion through the first and second gaps, first, second, and third operating modes at different frequencies can be invoked to generate wireless signals in first, second, and third LTE-A frequency bands.

A radiating system comprises a radiating structure including two or more radiation boosters for transmission and reception of electromagnetic wave signals, a radiofrequency system and an external port. The radiating system is capable of operation in at least a first and second frequency regions which are preferably separated. The radiofrequency system comprises two or more matching networks and a combining structure at which, in transmission, electromagnetic wave signals from the external port are substantially separated and coupled to each radiation booster based on the frequency of the signals; and, in reception, signals from each radiation booster are combined and coupled to the external port. The radiofrequency system provides impedance matching to the radiating structure in the first and second frequency regions at the external port. An advantage of such radiating system is that signals from the first and second frequency regions are fed to and retrieved in one single port.

A radiating system comprises a radiating structure including two or more radiation boosters for transmission and reception of electromagnetic wave signals, a radiofrequency system and an external port. The radiating system is capable of operation in at least a first and second frequency regions which are preferably separated. The radiofrequency system comprises two or more matching networks and a combining structure at which, in transmission, electromagnetic wave signals from the external port are substantially separated and coupled to each radiation booster based on the frequency of the signals; and, in reception, signals from each radiation booster are combined and coupled to the external port. The radiofrequency system provides impedance matching to the radiating structure in the first and second frequency regions at the external port. An advantage of such radiating system is that signals from the first and second frequency regions are fed to and retrieved in one single port.

An antenna structure is provided for use in an electronic device. The antenna structure includes a first feeding part; a second feeding part; and an antenna radiator including a first connection pattern including a first end and a second end, the first end of the first connection pattern being electrically connected to the first feeding part; a second connection pattern including a first end and a second end, the first end of the second connection pattern being electrically connected to the second feeding part; a first pattern that connects the second end of the first connection pattern and the second end of the second connection pattern; and a second pattern that extends from at least one end of the first pattern. The first feeding part is configured to transmit or receive a signal of a first frequency band, and the second feeding part is configured to transmit or receive a signal of a second frequency band that at least partially overlaps the first frequency band.

An antenna structure is provided for use in an electronic device. The antenna structure includes a first feeding part; a second feeding part; and an antenna radiator including a first connection pattern including a first end and a second end, the first end of the first connection pattern being electrically connected to the first feeding part; a second connection pattern including a first end and a second end, the first end of the second connection pattern being electrically connected to the second feeding part; a first pattern that connects the second end of the first connection pattern and the second end of the second connection pattern; and a second pattern that extends from at least one end of the first pattern. The first feeding part is configured to transmit or receive a signal of a first frequency band, and the second feeding part is configured to transmit or receive a signal of a second frequency band that at least partially overlaps the first frequency band.

An antenna structure includes a metal housing, a first radiating portion, a second g radiating portion, a third radiating portion, and a signal feed source. The metal housing includes a front frame, a backboard, and a side frame. The side frame defines a slot and the front frame defines a groove and a gap. The metal housing is divided into at least an antenna section by the slot, the groove, and the gap. The first radiating portion, the second radiating portion, and the third radiating portion are spaced apart from each other. One of three radiating portions is electrically connected to the antenna section. The remaining of the three radiating portions are spaced apart from the antenna section. The signal feed source is electrically connected to one radiating portion and the radiating portions of the three radiating portions not electrically connected to the signal feed source are grounded.

An antenna structure includes a metal housing, a first radiating portion, a second g radiating portion, a third radiating portion, and a signal feed source. The metal housing includes a front frame, a backboard, and a side frame. The side frame defines a slot and the front frame defines a groove and a gap. The metal housing is divided into at least an antenna section by the slot, the groove, and the gap. The first radiating portion, the second radiating portion, and the third radiating portion are spaced apart from each other. One of three radiating portions is electrically connected to the antenna section. The remaining of the three radiating portions are spaced apart from the antenna section. The signal feed source is electrically connected to one radiating portion and the radiating portions of the three radiating portions not electrically connected to the signal feed source are grounded.

According to various embodiments of the present invention, an antenna system comprises: an antenna including a first radiator element operating in a first frequency band and a second radiator element operating in a second frequency band; a power supply part connected to the antenna; a first grounding part and a second grounding part; a matching circuit connected to the first grounding part; and a switch, wherein the switch can connect the first radiator element to the second grounding part and connect the second radiator element to the matching circuit when the antenna transmits or receives a signal through the first frequency band, and can connect the second radiator element to the second grounding part and connect the first radiator element to the matching circuit when the antenna transmits or receives the signal through the second frequency band.

According to various embodiments of the present invention, an antenna system comprises: an antenna including a first radiator element operating in a first frequency band and a second radiator element operating in a second frequency band; a power supply part connected to the antenna; a first grounding part and a second grounding part; a matching circuit connected to the first grounding part; and a switch, wherein the switch can connect the first radiator element to the second grounding part and connect the second radiator element to the matching circuit when the antenna transmits or receives a signal through the first frequency band, and can connect the second radiator element to the second grounding part and connect the first radiator element to the matching circuit when the antenna transmits or receives the signal through the second frequency band.