Dual band multi-layer dipole antennas for wireless electronic devices

• US 9,496,623 B2
• Filed: 11/21/2014
• Issued: 11/15/2016
• Est. Priority Date: 11/21/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Mobile Communications Incorporated (Sony Group Corp.)
• Inventors: Helander, Jakob, Ying, Zhinong
• Primary Examiner(s): Mancuso, Huedung
• Application Number:
  US14/549,574
• Publication Number:
  US 20160149314A1
• Time in Patent Office: 725 Days
• Field of Search: 343/816, 343/810, 343/795, 343/700.MS, 343/702, 343/812, 343/813
• US Class Current: 1/1
• CPC Class Codes: G06Q 30/0206 Price or cost determination based on market factors
• CPC Class Codes: G06Q 30/0207 Discounts or incentives, e.g. coupons or rebates
• CPC Class Codes: H01Q 21/0075 Stripline fed arrays H01Q21/065 takes precedence
• CPC Class Codes: H01Q 21/20 the units being spaced along or adjacent to a curvilinear path slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/48 Combinations of two or more dipole type antennas
• CPC Class Codes: H01Q 9/065 Microstrip dipole antennas patch antenna H01Q9/0407
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

A wireless electronic device includes a printed circuit board (PCB) with first, second, and third conductive layers separated from one another by dielectric layers. A stripline is included in the first conductive layer. Two highband dipole antenna strips are included in the second conductive layer and/or two lowband dipole antenna strips are included in the third conductive layer. The wireless electronic device may be configured to resonate at a lowband resonant frequency corresponding to the two lowband dipole antenna strips and resonate at a highband resonant frequency corresponding to the two highband dipole antenna strips when excited by a signal transmitted and/or received though the stripline.

Claims

1. A wireless electronic device, comprising:

a printed circuit board (PCB) comprising first, second, and third conductive layers separated from one another by first and second dielectric layers respectively;

a stripline in the first conductive layer;

two highband dipole antenna strips in the second conductive layer; and

two lowband dipole antenna strips in the third conductive layer,

wherein the wireless electronic device is configured to resonate at a lowband resonant frequency corresponding to the two lowband dipole antenna strips and resonate at a highband resonant frequency corresponding to the two highband dipole antenna strips when excited by a signal transmitted and/or received though the stripline,

wherein the second conductive layer is between the first conductive layer that includes the stripline and the third conductive layer that includes the two lowband dipole antenna strips.

2. The wireless electronic device of claim 1, further comprising a balun, wherein the balun comprises:

a ground plane; and

a current phase controlling element that is configured to control a phase of a current of the wireless electronic device.

3. The wireless electronic device of claim 1, further comprising:

a feeding via that electrically connects the stripline to at least one of the highband dipole antenna strips through the first dielectric layer.

4. The wireless electronic device of claim 2, wherein the ground plane and the current phase controlling element are in the second conductive layer.

5. The wireless electronic device of claim 2, wherein the current phase controlling element comprises a first portion and a second portion with a slot therebetween.

6. The wireless electronic device of claim 5, wherein a width of the slot controls the phase of the current of the wireless electronic device.

7. The wireless electronic device of claim 2,

wherein the stripline comprises a first portion and a second portion, and

wherein the first portion of the stripline is positioned to overlap the second portion of the current phase controlling element for electromagnetic coupling to form an electromagnetic radiation beam.

8. The wireless electronic device of claim 7, further comprising:

a feeding via that electrically connects the second portion of the stripline to at least one of the highband dipole antenna strips through the first dielectric layer.

9. The wireless electronic device of claim 2, further comprising:

an antenna element via that electrically connects the current phase controlling element to at least one of the lowband dipole antenna strips through the second dielectric layer.

10. The wireless electronic device of claim 1,

wherein a length of one of the lowband dipole antenna strips is approximately 0.25 wavelengths of the lowband resonant frequency, and

wherein a length of one of the highband dipole antenna strips is approximately 0.25 wavelengths of the highband resonant frequency.

11. The wireless electronic device of claim 2, wherein the stripline is positioned to impedance match the balun.

12. The wireless electronic device of claim 1, wherein the width of the stripline is based on a thickness of the first dielectric layer between the first and second conductive layers.

13. A wireless electronic device, comprising:

a printed circuit board (PCB) comprising first, second, and third layers separated from one another by first and second dielectric layers respectively;

a stripline in the first layer;

a current phase controlling element in the second layer, wherein the second layer is between the first layer and the third layer;

two highband dipole antenna strips in the second layer;

two lowband dipole antenna strips in the third layer;

an antenna element via extending through the second dielectric layer from the current phase controlling element in the second layer to at least one of the lowband dipole antenna strips in the third layer; and

a feeding via extending through the first dielectric layer from the stripline in the first layer to at least one of the highband dipole antenna strips in the second layer.

14. The wireless electronic device of claim 13, further comprising a ground plane in the second layer.

15. The wireless electronic device of claim 13, wherein the current phase controlling element comprises a first portion and a second portion with a slot therebetween.

16. The wireless electronic device of claim 15, wherein a width of the slot controls the phase of the current of the wireless electronic device.

17. The wireless electronic device of claim 13,

wherein the stripline comprises a first portion and a second portion, and

wherein the first portion of the stripline is positioned to overlap the second portion of the current phase controlling element for electromagnetic coupling to form an electromagnetic radiation beam.

18. The wireless electronic device of claim 13,

wherein the wireless electronic device is configured to resonate at a lowband resonant frequency corresponding to the two lowband dipole antenna strips and resonate at a highband resonant frequency corresponding to the two highband dipole antenna strips when excited by a signal transmitted and/or received though the stripline.

19. The wireless electronic device of claim 18,

wherein a length of one of the lowband dipole antenna strips is approximately 0.25 wavelengths of the lowband resonant frequency, and

wherein a length of one of the highband dipole antenna strips is approximately 0.25 wavelengths of the highband resonant frequency.