Huawei Technologies Co., Limited

Huawei Device Co., Ltd.

Honor Device Co., Ltd.

Chi Liu

Wei Zhang

Hanyang Wang

Jianming Li

Chien-ming Lee

Xuefei Zhang

Kun Feng

Cheng Xu

Yiwu Hu

Yibo Chen

An antenna system includes an antenna body having one or more connection points between the antenna body and a ground; a tunable component having a changeable operating parameter that is a capacitance or a inductance, wherein the antenna body is connected to the tunable component through a first connection point; and a first filter, wherein the first filter are connected to the antenna body; wherein the first filter is connected in parallel with the tunable component, wherein a first end of the first filter is connected to the antenna body through the first connection point, and a second end of the first filter is connected to the ground, and wherein the first filter presents a high impedance characteristic in a low frequency band, and presents a low impedance characteristic in a high frequency band.

Antenna system and terminal

A slot antenna comprises a printed circuit board, wherein the printed circuit board has a slot, a first capacitor, a radio frequency signal source, a transmission line, and a ground cable, wherein one end of the slot is open, and the other end is closed; the first capacitor and the ground cable are disposed on the printed circuit board, wherein the first capacitor is located on the open end of the slot; the transmission line connects the first capacitor to the radio frequency signal source; and the radio frequency signal source is configured to stimulate a feeding signal, and feed the feeding signal to the open end of the slot, wherein the radio frequency signal source connects the transmission line to the ground cable, and wherein a feed point from the radio frequency signal source to the transmission line is located outside the slot.

Slot antenna and electronic device

A slot antenna includes: a printed circuit board having a slot, a first capacitor, a radio frequency signal source, a transmission line, and a ground cable. The printed circuit board is grounded; one end of the slot is open, and the other end is closed; the first capacitor and the ground cable are disposed on the printed circuit board, the first capacitor is located on the open end of the slot, and is disposed on one side of the slot; the first capacitor is connected to the radio frequency signal source by using the transmission line, and the radio frequency signal source connects the transmission line to the ground cable; and the radio frequency signal source is configured to: stimulate a feeding signal, and feed the feeding signal to the open end of the slot by using the first capacitor.

An antenna system includes an antenna body, a tunable component, and at least one of a first filter and a second filter. The antenna body is connected to the tunable component. The first filter is connected in parallel to the tunable component, and the first filter presents a high impedance characteristic in a low frequency band, and presents a low impedance characteristic in a high frequency band. The second filter is connected in series between the antenna body and the tunable component, a first end of the second filter is connected to the antenna body, and a second end of the second filter is connected to the tunable component. The second filter presents a low impedance characteristic in a low frequency band, and presents a high impedance characteristic in a high frequency band.

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Shenzhen, China

Chi Liu