Techniques for designing millimeter wave printed dipole antennas

• US 9,570,809 B2
• Filed: 06/05/2014
• Issued: 02/14/2017
• Est. Priority Date: 06/06/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ganchrow, Elimelech, Markish, Ofer, Diukman, Iddo, Yehezkely, Alon
• Primary Examiner(s): Phan, Tho G
• Application Number:
  US14/296,875
• Publication Number:
  US 20140361946A1
• Time in Patent Office: 985 Days
• Field of Search: 343/700.MS, 343/795, 343/821, 343/846, 343/859
• US Class Current: 1/1
• 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. An apparatus, comprising:

a substrate comprising a plurality of ground layers;

a signal wing and at least one ground wing, said at least one ground wing being coupled to at least one of the plurality of ground layers; and

an unbalanced feeding structure coupled to the signal wing, wherein the unbalanced feeding structure is boarded by a plurality of vias coupled to the ground layers, wherein the plurality of ground layers comprise a first ground layer and a second ground layer, and wherein the least one ground wing includes a first ground wing coupled to the first ground layer and a second ground wing coupled to the second ground layer.

2. The apparatus of claim 1, wherein the unbalanced feeding structure is a stripline routed between the first ground layer and the second ground layer.

3. The apparatus of claim 2, wherein the signal wing and the unbalanced feeding structure form an antenna used to propagate signals in a frequency band.

4. The apparatus of claim 3, wherein the antenna is printed on a layer of the substrate between the first ground layer and the second ground layer.

5. The apparatus of claim 3, wherein the frequency band is a 60 GHz frequency band.

6. The apparatus of claim 1, wherein the unbalanced feeding structure further comprises a tapered balun.

7. The apparatus of claim 6, wherein the tapered balun extends from at least one of the plurality of ground layers to the signal wing.

8. The apparatus 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 apparatus of claim 1, further comprising at least one signal director, wherein the at least one signal director is placed in front of the at least one ground wing and the signal wing.

10. A computing device, comprising:

a substrate comprising a plurality of ground layers;

a signal wing and at least one ground wing, the ground wing coupled to at least one of the plurality of ground layers;

an unbalanced feeding structure coupled to the signal wing, wherein the unbalanced feeding structure is boarded by a plurality of vias coupled to the ground layers; and

a radio frequency (RF) circuit configured to transmit or receive signals via the signal wing and the at least one ground wing, wherein the plurality of ground layers comprise a first ground layer and a second ground layer, and wherein the least one ground wing includes a first ground wing coupled to the first ground layer and a second ground wing coupled to the second ground layer.