Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

Provided is a method for matching antenna impedance in a wireless communication system. The method includes determining an approximate reflection coefficient based on an input signal and an output signal of a bidirectional coupler connected to a signal path of an antenna; determining an antenna impedance matching parameter corresponding to the determined approximate reflection coefficient by using a lookup table; and performing antenna impedance matching based on the antenna impedance matching parameter.

An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a radiating section. Current enters the radiating section from the first feed portion, the current flows through the radiating section and towards the first gap and the first radiating portion, thus activating radiating signals in a first frequency band; the current flows through the radiating section and towards the first ground portion, thus activating radiating signals in a second frequency band; the current flows through the radiating section and towards the second gap and the second radiating portion, thus activating radiation signals in a third different frequency band. A wireless communication device using the antenna structure is provided.

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.

An antenna structure includes a metallic member including a front frame and a side frame. The side frame defines a slot. The front frame defines a second gap and a third gap communicating with the slot and extending across the front frame. A portion of the front frame between the second gap and the third gap forms a first radiating section. Current enters the first radiating section from the first feed portion, flows through the first radiating section and towards the second gap to generate radiation signals in a first frequency band, flows through the first radiating section and towards the third gap to generate radiation signals in a second frequency band, and flows through the first radiating section and towards the second gap and the third gap to generate radiation signals in a third frequency band. A wireless communication device using the antenna structure is provided.

An antenna structure includes a metallic member, a feed portion, a ground portion and a radiating portion. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap, which are in communication with the slot and extend across the front frame. A straight portion of the front frame between the first gap and the second gap forms a radiating section. The feed portion and the ground portion are electrically connected to the radiating section. Current enters the radiating section from the feed portion. The current flows through the radiating section and towards the second gap. The radiating portion obtains current from the radiating section by coupling. The radiating section and the radiating portion generate radiation signals in two different frequency bands. A wireless communication device using the antenna structure is provided.

An antenna structure includes a metallic member, a feed portion, a ground portion and a radiating portion. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap, which are in communication with the slot and extend across the front frame. A straight portion of the front frame between the first gap and the second gap forms a radiating section. The feed portion and the ground portion are electrically connected to the radiating section. Current enters the radiating section from the feed portion. The current flows through the radiating section and towards the second gap. The radiating portion obtains current from the radiating section by coupling. The radiating section and the radiating portion generate radiation signals in two different frequency bands. A wireless communication device using the antenna structure is provided.

An antenna structure includes a metallic member. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap and a second gap. The front frame between the first gap and the second gap forms a first radiating section, the front frame between the first gap and an end of the slot forms a third radiating section. Current enters the first radiating section from the first feed portion, the current flows through the first radiating section and towards the first gap and the second gap, respectively, thus activating radiating signals in a first frequency band and a second frequency band, the third radiating section obtains current from the first radiating section by coupling, thus activating radiation signals in a fourth different frequency band. A wireless communication device using the antenna structure is provided.

A device may include a housing, a wireless transceiver carried by the housing, and an antenna element carried by the housing and having first and second feeds, and a split antenna feed network carried by the housing and providing a phase shift between the first and second feeds. The split antenna feed network may include a first capacitor having a first terminal coupled to the first feed and a second terminal coupled to the wireless transceiver, a second capacitor having a first terminal coupled to the second feed and a second terminal, a first inductor having a first terminal coupled to the second terminal of the first capacitor and a second terminal coupled to the second terminal of the second capacitor, and a second inductor having a first terminal coupled to the second terminal of the second capacitor and a second terminal coupled to a voltage reference.