US 10,833,396 B2Granted

Electronic device

AssigneeHuawei Device Co., Ltd.

InventorsJianming Li, Kun Feng, Xuefei Zhang, Hanyang Wang

Life of this patent

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Abstract

An electronic device includes a metal frame, an antenna feeding point, an antenna ground, a feeding branch, a grounding branch, an antenna resonance arm, a variable capacitor, and a control circuit. The antenna resonance arm is a part of the metal frame after segmentation, the antenna feeding point is disposed on the feeding branch, a first connection portion and a second connection portion are disposed on the antenna resonance arm, the feeding branch is disposed between the second connection portion and the antenna ground, the grounding branch is disposed between the first connection portion and the antenna ground, the variable capacitor is disposed on the feeding branch, the variable capacitor is disposed between the antenna feeding point and the second connection portion, and the control circuit is configured to adjust a capacitance of the variable capacitor.

Claims31

Dependent claims

An electronic device comprising:

a metal frame;
an antenna ground;
an antenna resonance arm, wherein the antenna resonance arm is a part of the metal frame after segmentation, wherein the antenna resonance arm comprises a first end portion and a second end portion, wherein a first connection portion, a second connection portion, and a third connection portion are disposed on the antenna resonance arm, wherein the first connection portion is disposed on the first end portion of the antenna resonance arm, and wherein the third connection portion is between the first connection portion and the second connection portion;
a feeding branch disposed between the second connection portion and the antenna ground, wherein a feeding point and a variable capacitor are disposed on the feeding branch, and wherein the variable capacitor is disposed between the second connection portion and the feeding point;
a grounding branch disposed between the first connection portion and the antenna ground;
a short grounding branch disposed between the third connection portion and the antenna ground, wherein the short grounding branch is provided with a controlled switch;
and
a control circuit configured to:
control the controlled switch to be switched off or switched on;
and
when the control switch is switched off,
generate a first resonance frequency by a part of the antenna resonance arm between the first connection portion and the second connection portion;
and
generate a second resonance frequency by a part of the antenna resonance arm between the second connection portion and the second end portion of the antenna resonance arm, wherein the first resonance frequency is lower than the second resonance frequency.

11 more elements

An electronic device comprising:

a metal frame;
an antenna ground;
an antenna resonance arm, wherein the antenna resonance arm is a part of the metal frame after segmentation, wherein the antenna resonance arm comprises a first end portion and a second end portion, wherein a first connection portion, a second connection portion, and a third connection portion are disposed on the antenna resonance arm, wherein the first connection portion is disposed on the first end portion of the antenna resonance arm, and wherein the third connection portion is between the first connection portion and the second connection portion;
a feeding branch disposed between the second connection portion and the antenna ground, wherein a feeding point and a variable capacitor are disposed on the feeding branch, and wherein the variable capacitor is disposed between the second connection portion and the feeding point;
a grounding branch disposed between the first connection portion and the antenna ground;
a short grounding branch disposed between the third connection portion and the antenna ground, wherein the short grounding branch is provided with a controlled switch;
and
a control circuit configured to:
control the controlled switch to be switched off or switched on;
generate a first resonance frequency and a second resonance frequency by the antenna resonance arm when the controlled switch is switched off, wherein the first resonance frequency is lower than the second resonance frequency;
and
generate a third resonance frequency by the antenna resonance arm when the controlled switch is switched on.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/377,990Filed 8 Apr 2019 · continuation
Priority: CN 2014 1 010957121 Mar 2014
Published: US 2019/0237854 A11 Aug 2019
Granted: 10 Nov 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01Q 1/243
Specially adapted for hand-held use: with built-in antennas
H01Q 1/48
Details of, or arrangements associated with, antennas: earthing means; Earth screens; Counterpoises
H01Q 1/50
Details of, or arrangements associated with, antennas: structural association of antennas with earthing switches, lead-in devices or lightning…
H01Q 5/328
Using frequency dependent circuits or components, e.g. trap circuits or capacitors: between a radiating element and ground

Family

PCT/CN2015/073649Parent of this continuation · filed 4 Mar 2015
US 2019/0237854 A1Pre-grant publication · published 1 Aug 2019
Application15/124,449Parent of this continuation
US 10,290,922 B2Parent of this continuation
US 2017/0025740 A1Published application
US 10,833,396 B2This patent

From the US filing history. Foreign family members aren’t listed.