US 11,909,130 B2Granted

Antenna structure and communications terminal

AssigneeVivo Mobile Communication Co., Ltd.

InventorRihui Li

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Abstract

An antenna structure includes a first antenna radiator, a second antenna radiator, and a first impedance matching circuit. The first antenna radiator and the second antenna radiator are disposed in a laminated or opposite manner, and a gap exists between the first antenna radiator and the second antenna radiator. The length of the first antenna radiator is greater than that of the second antenna radiator, and the resonant frequency band of the first antenna radiator is smaller than that of the second antenna radiator. The first end of the first antenna radiator is grounded, a first feeding point is provided on the first antenna radiator. The first end of the second antenna radiator is grounded, a second feeding point is provided on the second antenna radiator, and the second feeding point is connected to a second signal source.

Claims20

Dependent claims

An antenna structure, applied to a communications terminal, comprising a first antenna radiator, a second antenna radiator, a first impedance matching circuit, a first signal source, and a second signal source;

wherein
the first antenna radiator and the second antenna radiator are stacked or disposed relative to each other, and there is a gap between the first antenna radiator and the second antenna radiator;
a length of the first antenna radiator is greater than a length of the second antenna radiator, and a resonance band of the first antenna radiator is less than a resonance band of the second antenna radiator;
a first end of the first antenna radiator is grounded, a second end of the first antenna radiator is an open end, the first antenna radiator is provided with a first feed point, the first feed point is connected to a first terminal of the first signal source through the first impedance matching circuit, and a second terminal of the first signal source is grounded;
and
a first end of the second antenna radiator is grounded, a second end of the second antenna radiator is an open end, the second antenna radiator is provided with a second feed point, the second feed point is connected to a first terminal of the second signal source, and a second terminal of the second signal source is grounded;
wherein the first impedance matching circuit comprises a first inductor and a first capacitor, a first terminal of the first inductor is connected to the first feed point, a second terminal of the first inductor is connected to a first terminal of the first capacitor, and a second terminal of the first capacitor is connected to the first terminal of the first signal source;
and
the first impedance matching circuit further comprises a second inductor and a second capacitor, a first terminal of the second inductor is connected to the second terminal of the first inductor, a second terminal of the second inductor is grounded, a first terminal of the second capacitor is connected to the first terminal of the second inductor, and a second terminal of the second capacitor is grounded.

6 more elements

A communications terminal, comprising an antenna structure, wherein the antenna structure comprises a first antenna radiator, a second antenna radiator, a first impedance matching circuit, a first signal source, and a second signal source;

the first antenna radiator and the second antenna radiator are stacked or disposed relative to each other, and there is a gap between the first antenna radiator and the second antenna radiator;
a length of the first antenna radiator is greater than a length of the second antenna radiator, and a resonance band of the first antenna radiator is less than a resonance band of the second antenna radiator;
a first end of the first antenna radiator is grounded, a second end of the first antenna radiator is an open end, the first antenna radiator is provided with a first feed point, the first feed point is connected to a first terminal of the first signal source through the first impedance matching circuit, and a second terminal of the first signal source is grounded;
and
a first end of the second antenna radiator is grounded, a second end of the second antenna radiator is an open end, the second antenna radiator is provided with a second feed point, the second feed point is connected to a first terminal of the second signal source, and a second terminal of the second signal source is grounded;
wherein the first impedance matching circuit comprises a first inductor and a first capacitor, a first terminal of the first inductor is connected to the first feed point, a second terminal of the first inductor is connected to a first terminal of the first capacitor, and a second terminal of the first capacitor is connected to the first terminal of the first signal source;
and
the first impedance matching circuit further comprises a second inductor and a second capacitor, a first terminal of the second inductor is connected to the second terminal of the first inductor, a second terminal of the second inductor is grounded, a first terminal of the second capacitor is connected to the first terminal of the second inductor, and a second terminal of the second capacitor is grounded.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/345,193Filed 11 Jun 2021 · continuation
Priority: CN 201811521132.312 Dec 2018
Published: US 2021/0305703 A130 Sep 2021
Granted: 20 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01Q 5/335
Using frequency dependent circuits or components, e.g. trap circuits or capacitors: at the feed, e.g. for impedance matching
H01Q 9/0442
Substantially flat resonant element parallel to ground plane, e.g. patch antenna: with particular tuning means
H01Q 1/243
Specially adapted for hand-held use: with built-in antennas
H01Q 5/328
Using frequency dependent circuits or components, e.g. trap circuits or capacitors: between a radiating element and ground

Family

PCT/CN2019/117441Parent of this continuation · filed 12 Nov 2019
US 2021/0305703 A1Pre-grant publication · published 30 Sep 2021
US 11,909,130 B2This patent

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

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