Dual-Band Antenna, Wireless Local Area Network Device, and Method for Manufacturing Dual-Band Antenna

Patent metadata

Field	Value
Publication number	US-2018358697-A1
Application number	US-201816006524-A
Country	US
Kind code	A1
Filing date	Jun 12, 2018
Priority date	Jun 13, 2017
Publication date	Dec 13, 2018
Grant date	—

Abstract

A dual-band antenna, a wireless local area network (WLAN) device, and a method for manufacturing a dual-band antenna, where the dual-band antenna includes a conductive plane, a smooth curved-surface assembly joined onto the conductive plane, and a feed pin connected to the smooth curved-surface assembly. The conductive plane is configured to function as a first antenna, for receiving and sending a radio frequency signal of a first frequency band, and the smooth curved-surface assembly is configured to function as a second antenna, for receiving and sending a radio frequency signal of a second frequency band. Hence, a curved surface of a surface of the curved-surface assembly that is used as the second antenna transits smoothly. Therefore, a current is distributed relatively evenly, and radiation efficiency is relatively high.

First claim

1 . A dual-band antenna, comprising:
a conductive configured to function as a first antenna for receiving and sending a radio frequency signal of a first frequency band; a smooth curved-surface assembly coupled to the conductive plane and configured to function as a second antenna for receiving and sending a radio frequency signal of a second frequency band; and a feed pin coupled to the smooth curved-surface assembly.

2 . The dual-band antenna according of claim 1 , wherein the smooth curved-surface assembly comprises a curved conical surface, and the curved conical surface comprising a surface of revolution using a two-dimensional curve in a plane perpendicular to the conductive plane as a generatrix.

3 . The dual-band antenna of claim 2 , wherein the generatrix of the curved conical surface is determined by an equation z=H(2x/d) n , the n comprising an order of a symmetrical curved conical surface of revolution, the n>1, the H comprising a vertical distance from the conductive plane to a bottom of the curved conical surface, the D comprising a diameter of an opening of the curved conical surface, and the x≤D/2.

4 . The dual-band antenna of claim 3 , wherein the conductive plane is in a ring shape, and an inner diameter of the conductive plane is equal to the diameter of the opening of the curved conical surface.

5 . The dual-band antenna of claim 1 , further comprising a short-circuit plate, the short-circuit plate comprising a conductor and configured to couple the conductive plane to a ground plane.

6 . The dual-band antenna of claim 1 , wherein the first frequency band comprises a 2.4 gigahertz (GHz) frequency band, and the second frequency band comprising a 5 GHz frequency band.

7 . A method for manufacturing a dual-band antenna, comprising:
forming a conductive plane functioning as a first antenna, the conductive plane receiving and sending a radio frequency signal of a first frequency band; forming a smooth curved-surface assembly functioning as a second antenna and coupled to the conductive plane, the smooth curved-surface assembly receiving and sending a radio frequency signal of a second frequency band; and coupling a feed pin onto the smooth curved-surface assembly.

8 . The method according of claim 7 , wherein the smooth curved-surface assembly comprises a curved conical surface, and the curved conical surface is a surface of revolution using a two-dimensional curve in a plane perpendicular to the conductive plane as a generatrix.

9 . The method of claim 8 , wherein the generatrix of the curved conical surface is determined by an equation z=H(2x/D) n , n comprising an order of asymmetrical curved conical surface of revolution, the n>1, the H comprising a vertical distance from the conductive plane to a bottom of the curved conical surface, the D comprising a diameter of an opening of the curved conical surface, and the x≤D/2.

10 . The method of claim 7 , further comprising: forming a short-circuit plate, and the short-circuit plate being configured to couple conductive plane to a ground plane.

11 . The method of claim 7 , wherein coupling the feed pin onto the smooth curved-surface assembly comprises welding the feed pin onto the smooth curved-surface assembly.

12 . The method of claim 7 , wherein the first frequency band comprises a 2.4 gigahertz (GHz) frequency band, and the second frequency band comprising a 5 GHz frequency band.

13 . A wireless local area network device, comprising a dual-band antenna comprising:
a conductive plane configured to function as a first antenna for receiving and sending a radio frequency signal of a first frequency band; a smooth curved-surface assembly coupled to the conductive plane and configured to function as a second antenna for receiving and sending a radio frequency signal of a second frequency band; and a feed pin coupled to the smooth curved surface assembly.

14 . The wireless local area network device of claim 13 , wherein the wireless local area network device comprises a wireless access point (AP).

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhou Xiao
• Yuan Bo
• Jiang Xingfeng
• Zhang Kun

Classifications

• H01Q9/0407

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title

• H01Q5/30 Primary

  Arrangements for providing operation on different wavebands · CPC title

• H01Q1/246

  specially adapted for base stations · CPC title

• H01Q1/2291 Primary

  used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W) · CPC title

• H01Q9/0464

  Annular ring patch · CPC title