Circular polarized antennas including static element

• US 10,199,732 B2
• Filed: 12/30/2014
• Issued: 02/05/2019
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: Advanced Micro Devices, Inc., AMD Far East Ltd. (Advanced Micro Devices, Inc.)
• Original Assignee: Advanced Micro Devices, Inc.
• Inventors: Preradovic, Stevan, Yang, Bo, Camilleri, Natalino
• Primary Examiner(s): Levi, Dameon E
• Assistant Examiner(s): Lotter, David
• Application Number:
  US14/586,776
• Publication Number:
  US 20160190697A1
• Time in Patent Office: 1,498 Days
• Field of Search: 343700 MS
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• 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 9/0428 radiating a circular polarised wave

Abstract

An apparatus comprising at least one antenna for transmission and/or reception of circularly polarized electromagnetic radiation. The antenna includes a radiating element, a static element, and a single feed line. The single feed line is coupled between the radiating element and a circuit that drives the antenna. The radiating element has a non-symmetrical outer perimeter shape. The radiating element may include an aperture. The antenna may further include a ground element and a supplemental ground feed structure, the supplemental ground feed structure located between the radiating element and the ground element and the radiating element located between the supplemental ground feed structure and the static element.

Claims

1. An apparatus comprising:

at least one multi-layer antenna structure including a ground element, a radiating element, a static element, a single feed line connected to the radiating element, a first substrate, and a second substrate,

the radiating element having a non-symmetrical outer perimeter shape,

the radiating element located between the ground element and the static element,

the first substrate located between the radiating element and the ground element, and

the second substrate is located between the radiating element and the static element such that the radiating element at least partially overlaps with the ground element and the static element;

wherein the antenna structure emits circularly polarized radiation,

wherein a thickness of the first substrate is at least approximately two times larger than a thickness of the second substrate, and

wherein the apparatus is configured to operate in the 60 GHz range.

2. The apparatus of claim 1, wherein the non-symmetrical outer perimeter shape of the radiating element includes a pair of opposing corners having a truncated shape, a pair of opposing corners having a mitered edge, or a pair opposing corners having a rounded shape.

3. The apparatus of claim 1, wherein the radiating element includes an aperture.

4. The apparatus of claim 3, wherein the aperture is located at a central region of the radiating element or substantially at a center of the radiating element.

5. The apparatus of claim 3, wherein the aperture comprises a geometric shape, a symmetric shape, a non-symmetric shape, a square shape, a rectangular shape, a circular shape, or an elliptical shape.

6. The apparatus of claim 1, wherein the static element comprises a non-radiating structure.

7. The apparatus of claim 1, wherein each of the radiating element, the static element, and the ground element comprises an electrically conductive material, and each of the first substrate and the second substrate comprises a non-electrically conductive material.

8. The apparatus of claim 1, wherein the first substrate has a minimum thickness of approximately λ

/20 and the second substrate has a minimum thickness of approximately λ

/40, where λ

comprises an operating wavelength of the circularly polarized radiation.

9. The apparatus of claim 1, wherein the antenna structure is configured to operate in a millimeter wave (mm-wave) or sub-millimeter wave (sub-mm wave) frequency band.

10. The apparatus of claim 1, wherein the single feed line connects the antenna structure to an integrated circuit, wherein the antenna structure further includes a supplemental ground feed structure electrically coupled to the ground element, wherein the supplemental ground feed structure is located between the single feed line and the ground element.

11. The apparatus of claim 1, wherein the antenna structure further includes a second static element located adjacent to a side of the static element that is distal to the radiating element.

12. The apparatus of claim 1, further comprising:

a second antenna structure including a second radiating element, a second static element, and a second single feed line connected to the second radiating element,

the second radiating element having a second non-symmetrical outer perimeter shape;

an integrated circuit connected to the single feed line to drive the antenna structure and connected to the second single feed line to drive the second antenna structure.

13. An apparatus comprising:

a patch antenna including;

means for emitting a circularly polarized electromagnetic radiation, the means for emitting (1) having a non-symmetrical outer perimeter shape and (2) including an aperture located at a central region of the means for emitting to provide impedance matching at a particular frequency band;

means for increasing bandwidth of the circularly polarized electromagnetic radiation;

means for grounding; and

means for feeding the means for emitting, the means for feeding connected to the means for emitting;

wherein the means for feeding is electrically coupled between the means for emitting and a circuit that drives the patch antenna, and wherein the means for emitting is located between the means for grounding and the means for increasing bandwidth such that the means for emitting at least partially overlaps with the means for grounding and the means for increasing bandwidth.

14. The apparatus of claim 13, wherein the non-symmetrical outer perimeter shape of the means for emitting includes a pair of opposing corners having a truncated shape, a pair of opposing corners having a mitered edge, or a pair opposing corners having a rounded shape.

15. The apparatus of claim 13, wherein the aperture comprises a geometric shape, a symmetric shape, a non-symmetric shape, a square shape, a rectangular shape, a circular shape, or an elliptical shape.

16. The apparatus of claim 13, wherein the means for feeding comprises a single feed line.

17. The apparatus of claim 13, wherein each of the means for emitting, the means for increasing bandwidth, and the means for grounding comprises an electrically conductive material.

18. The apparatus of claim 13, wherein the patch antenna further includes means for reducing a width of the means for feeding, and wherein the means for reducing the width is electrically coupled to the means for grounding and the means for reducing the width is located between the means for feeding and the means for grounding.

19. The apparatus of claim 13, wherein the means for increasing bandwidth at least partially extends over the means for emitting or is substantially a same size as the means for emitting.

20. An antenna comprising:

a radiating element having (1) a non-symmetrical outer perimeter shape and one or more mitered corners, and (2) an aperture located at a central region of the radiating element to provide impedance matching at a particular frequency band;

a ground element;

a parasitic element; and

a single feed line connecting the radiating element to an integrated circuit;

wherein the radiating element is located between the ground element and the parasitic element such that the parasitic element overlaps the central region and at least one mitered corner, from the one or more mitered corners, of the radiating element, and one or more other portions of the radiating element extend beyond the parasitic element.

21. The antenna of claim 20, wherein the non-symmetrical outer perimeter shape of the radiating element includes a pair of opposing corners having a truncated shape, a pair of opposing corners having a mitered edge, or a pair opposing corners having a rounded shape.

22. The antenna of claim 20, further comprising a supplemental ground feed structure electrically coupled to the ground element, wherein the supplemental ground feed structure is located between the single feed line and the ground element.

23. The antenna of claim 20, wherein the parasitic element comprises a geometric shape, a circular shape, a symmetric shape, an approximately circular shape, a shape different from the radiating element, approximately a same size as the radiating element, or is located at least partially co-linear with the radiating element.

24. The antenna of claim 22, wherein the supplemental ground feed structure includes a supplemental ground feed element and a conductive via element, the supplemental ground feed element located between the single feed line and the ground element, and the conductive via element located between the supplemental ground feed element and the ground element.

25. The antenna of claim 20, wherein the single feed line has a width of approximately 0.02λ

, where λ

is an operating wavelength of the antenna.