Terminal monopole antenna

Patent metadata

Field	Value
Publication number	US-12494584-B2
Application number	US-202218279525-A
Country	US
Kind code	B2
Filing date	Aug 17, 2022
Priority date	Sep 3, 2021
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

Embodiments of this application disclose a terminal monopole antenna, relating to the technical field of antennas. The antenna includes a radiation branch, the radiation branch includes at least one radiator, and a first end of the radiator is electrically connected to a reference ground through a first inductor. When the terminal monopole antenna is directly fed by a feeding point, a second end of the radiator is electrically connected to the feeding point. When the terminal monopole antenna is coupled and fed, the second end is electrically connected to the reference ground through a second inductor. The terminal monopole antenna further includes a feeding branch, the feeding branch is configured to perform coupled feeding to the radiation branch. A length of the radiation branch is less than a quarter of an operating wavelength of the terminal monopole antenna.

First claim

What is claimed is:

1 . A terminal monopole antenna, wherein
the antenna comprises a radiation branch, the radiation branch comprises at least one radiator, a first end of the at least one radiator is electrically connected to a reference ground through a first inductor, and the first end is one of ends on two sides of the at least one radiator; a second end of the at least one radiator is electrically connected to the reference ground through a second inductor, the second end is an end different from the first end among the ends on the two sides of the at least one radiator, the terminal monopole antenna further comprises a feeding branch, the feeding branch is not physically connected to the radiation branch, the feeding branch is arranged between the radiation branch and the reference ground, a feeding point comprising a feed is arranged on the feeding branch, and the feeding branch is configured to perform coupled feeding to the radiation branch; and a length of the radiation branch is less than a quarter of an operating wavelength of the terminal monopole antenna.

2 . The terminal monopole antenna according to claim 1 , wherein
when an operating frequency band of the terminal monopole antenna ranges from 450 MHz to 1 GHz, an inductance value of the first inductor and an inductance value of the second inductor are set within [5 nH, 47 nH]; when the operating frequency band of the terminal monopole antenna ranges from 1 GHz to 3 GHz, the inductance value of the first inductor and the inductance value of the second inductor are set within [1 nH, 33 nH]; and when the operating frequency band of the terminal monopole antenna ranges from 3 GHz to 10 GHz, the inductance value of the first inductor and the inductance value of the second inductor are set within [0.5 nH, 10 nH].

3 . The terminal monopole antenna according to claim 1 , wherein the feeding branch comprises a first feeding part, the feeding point is connected to a center of the first feeding part, and ends on two sides of the first feeding part are suspended.

4 . The terminal monopole antenna according to claim 1 , wherein the feeding branch comprises a second feeding part, two sides of the second feeding part are respectively grounded through a third inductor and a fourth inductor, and the feeding point is connected in series on the second feeding part.

5 . The terminal monopole antenna according to claim 1 , wherein the feeding branch comprises a third feeding part, and the feeding point is connected to an end on one side of the third feeding part.

6 . The terminal monopole antenna according to claim 5 , wherein an end on the other side of the third feeding part is suspended.

7 . The terminal monopole antenna according to claim 5 , wherein an end on the other side of the third feeding part is grounded through a third inductor.

8 . The terminal monopole antenna according to claim 5 , wherein an end of the third feeding part that is farthest from the feeding point is grounded; and a through slot is provided on the third feeding part, and the slot divides the third feeding part into two parts that are not connected to each other.

9 . The terminal monopole antenna according to claim 5 , wherein an end of the third feeding part that is farthest from the feeding point is grounded; and a fourth inductor connected in series is arranged on the third feeding part.

10 . The terminal monopole antenna according to claim 1 , wherein feeding branches of different sizes correspond to different port impedances of the terminal monopole antenna.

11 . The terminal monopole antenna according to claim 1 , wherein
when the terminal monopole antenna is operating, an even electric field is distributed between the radiation branch and the reference ground.

12 . The terminal monopole antenna according to claim 1 , wherein
when the terminal monopole antenna is operating, a reverse current is distributed on the at least one radiator.

13 . The terminal monopole antenna according to claim 1 , wherein one or more inductors are connected in series with radiators in the at least one radiator; and
when a plurality of inductors are connected in series with the radiators in the at least one radiator, the plurality of inductors comprise at least two inductors spaced apart from each other by a radiator of the at least one radiator.

14 . An electronic device, comprising at least one processor, a radio frequency module, and a terminal monopole antenna; and
wherein when transmitting or receiving a signal, the electronic device transmits or receives the signal through the radio frequency module and the terminal monopole antenna; wherein the terminal monopole antenna comprises a radiation branch, the radiation branch comprises at least one radiator, a first end of the at least one radiator is electrically connected to a reference ground through a first inductor, and the first end is one of ends on two sides of the at least one radiator; wherein a second end of the at least one radiator is electrically connected to the reference ground through a second inductor, the second end is an end different from the first end among the ends on the two sides of the at least one radiator, the terminal monopole antenna further comprises a feeding branch, the feeding branch is not connected to the radiation branch comprising that electrical current of the feeding branch does not flow through the radiation branch, the feeding branch is arranged between the radiation branch and the reference ground, a feeding point comprising a feed is arranged on the feeding branch, and the feeding branch is configured to perform coupled feeding to the radiation branch; and wherein a length of the radiation branch is less than a quarter of an operating wavelength of the terminal monopole antenna.

15 . The electronic device according to claim 14 , wherein an operating frequency band of the terminal monopole antenna ranges from 450 MHz to 1 GHz, and an inductance value of the first inductor and an inductance value of the second inductor are set within [5 nH, 47 nH].

16 . The electronic device according to claim 14 , wherein an operating frequency band of the terminal monopole antenna ranges from 1 GHz to 3 GHZ, and an inductance value of the first inductor and an inductance value of the second inductor are set within [1 nH, 33 nH].

17 . The electronic device according to claim 14 , wherein an operating frequency band of the terminal monopole antenna ranges from 3 GHz to 10 GHz, and an inductance value of the first inductor and an inductance value of the second inductor are set within [0.5 nH, 10 nH].

18 . The electronic device according to claim 14 , wherein the feeding branch comprises a first feeding part, the feeding point is connected to a center of the first feeding part, and ends on two sides of the first feeding part are suspended.

19 . The electronic device according to claim 14 , wherein the feeding branch comprises a second feeding part, two sides of the second feeding part are respectively grounded through a third inductor and a fourth inductor, and the feeding point is connected in series on the second feeding part.

20 . The electronic device according to claim 14 , wherein the feeding branch comprises a third feeding part, and the feeding point is connected to an end on one side of the third feeding part.

Assignees

• Honor Device Co Ltd

Inventors

• Zhou Dawei
• Li Yuanpeng

Classifications

• H01Q1/24

  with receiving set · CPC title

• H01Q9/42 Primary

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• H01Q5/335

  at the feed, e.g. for impedance matching · CPC title

• H01Q7/00

  Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop · CPC title

• H01Q1/273

  Adaptation for carrying or wearing by persons or animals · CPC title