TECHNIQUES FOR DESIGNING MILLIMETER WAVE PRINTED DIPOLE ANTENNAS

• US 20140361946A1
• Filed: 06/05/2014
• Published: 12/11/2014
• Est. Priority Date: 06/06/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Wilocity, Ltd. (Qualcomm, Inc.)
• Inventors: Diukman, Iddo, Yehezkely, Alon, GANCHROW, Elimelech, MARKISH, Ofer
• Granted Patent: US 9,570,809 B2
• Time in Patent Office: Days
• US Class Current: 343/795
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/50 Structural association of antennas with earthing switches, lead-in devices or lightning protectors
• CPC Class Codes: H01Q 15/02 Refracting or diffracting devices, e.g. lens, prism
• CPC Class Codes: H01Q 19/30 the primary active element being centre-fed and substantially straight, e.g. Yagi antenna
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

A printed millimeter wave dipole antenna and techniques for designing such an antenna are disclosed. In one embodiment, the dipole antenna comprises: a signal wing and at least one ground wing for propagating signals in a millimeter wave band; and an unbalanced feeding structure directly coupled to the signal wing. The unbalanced feeding structure is boarded by a plurality of escorting vias to ensure equipotential grounds.

Claims

1. A printed millimeter wave dipole antenna, comprising:

a signal wing and at least one ground wing for propagating signals in a millimeter wave band; and

an unbalanced feeding structure directly coupled to the signal wing, wherein the unbalanced feeding structure is boarded by a plurality of escorting vias to ensure equipotential grounds.

2. The printed millimeter wave dipole antenna of claim 1, wherein the least one ground wing includes a first ground wing connected to a first ground layer and a second ground wing connected to a second ground layer.

3. The printed millimeter wave dipole antenna of claim 2, wherein the unbalanced feeding structure is a stripline connected between the first ground layer and the second ground layer.

4. The printed millimeter wave dipole antenna of claim 3, wherein the first ground layer and the second ground layer are ground layers of a substrate on which the millimeter wave dipole antenna is printed.

5. The printed millimeter wave dipole antenna of claim 4, wherein the millimeter wave dipole antenna is printed on at least on a middle layer of the substrate.

6. The printed millimeter wave dipole antenna of claim 1, wherein the unbalanced feeding structure further comprises a tapered balun.

7. The printed millimeter wave dipole antenna of claim 6, wherein the tapered balun extends from a ground layer to the signal wing.

8. The printed millimeter wave dipole antenna of claim 7, wherein the tapered balun is shaped as a trapezoid, wherein a first base of the trapezoid is narrower than a second base of the trapezoid, wherein the first base of the trapezoid is closer to the signal wing than the second base of the trapezoid.

9. The printed millimeter wave dipole antenna of claim 8, wherein at least one signal director is placed in front of the at least one ground wing and the signal wing.

10. The printed millimeter wave dipole antenna of claim 1, wherein the millimeter wave band is at least the 60 GHz frequency band.

11. A printed millimeter wave dipole antenna, comprising:

a first dipole wing and a second dipole wing for propagating signals in a millimeter wave band; and

a balanced feeding structure construed to include a first feed stripline connected to the first dipole wing and the second feed stripline connected to the second dipole wing.

12. The printed millimeter wave dipole antenna of claim 11, wherein a portion of a ground layer extends out over the first and second feed striplines, wherein the ground layer is of a substrate on which the millimeter wave dipole antenna is printed.

13. The printed millimeter wave dipole antenna of claim 11, wherein the first and second feed striplines are tapered to match to differential feed lines of the dipole antenna.

14. The printed millimeter wave dipole antenna of claim 11, wherein at least one signal director is placed in front of the first and second wings.

15. The printed millimeter wave dipole antenna of claim 11, wherein the dipole antenna acts as a Yagi-Uda driven element.

16. The printed millimeter wave dipole antenna of claim 11, wherein the dipole antenna acts as a power combiner.

17. The printed millimeter wave dipole antenna of claim 11, wherein the millimeter wave dipole antenna is printed on at least a middle layer of a substrate.

18. The printed millimeter wave dipole antenna of claim 11, wherein the millimeter wave band is at least the 60 GHz frequency band.

22. The printed millimeter wave dipole antenna of claim 12, wherein the millimeter wave band is at least the 60 GHz frequency band.

19. A printed millimeter wave dipole antenna, comprising:

a first dipole wing and a second dipole wing for propagating signals in a millimeter wave band; and

a balanced feeding structure construed to include a feed stripline and a balun, wherein the dipole antenna is printed on a metal layer between ground layers of a substrate.

20. The printed millimeter wave dipole antenna of claim 19, wherein the ground layers are separated by a ground via a wall.

21. The printed millimeter wave dipole antenna of claim 19, wherein the distance from the first and second dipole wings to the ground via wall is a quarter of a wavelength.