Circular Polarized Antennas Including Static Element

• US 20160190697A1
• Filed: 12/30/2014
• Published: 06/30/2016
• 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: Nitero Pty. Ltd.
• Inventors: Preradovic, Stevan, Yang, Bo, Camilleri, Natalino
• Granted Patent: US 10,199,732 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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, and a single feed line connected to the radiating element,

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

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

wherein the antenna structure emits circularly polarized radiation.

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 center 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 antenna structure further includes a first substrate and a second substrate, wherein the first substrate is located between the radiating element and the ground element and the second substrate is located between the radiating element and the static element, and wherein the static element comprises a non-radiating structure.

7. The apparatus of claim 6, wherein a thickness of the first substrate is larger than a thickness of the second substrate.

8. The apparatus of claim 6, 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.

9. The apparatus of claim 6, 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.

10. 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.

11. The apparatus of claim 1, 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 radiating element and the ground element.

12. 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.

13. 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.

14. An apparatus comprising:

a patch antenna including means for emitting a circularly polarized electromagnetic radiation, means for increasing bandwidth of the circularly polarized electromagnetic radiation, and means for feeding the means for emitting,

the means for emitting having a non-symmetrical outer perimeter shape;

wherein the means for feeding is electrically coupled between the means for emitting and a circuit that drives the patch antenna.

15. The apparatus of claim 14, 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.

16. The apparatus of claim 14, wherein the means for emitting includes an aperture.

17. The apparatus of claim 16, wherein the aperture is located at a center of the means for emitting or substantially at a center of the means for emitting, and 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.

18. The apparatus of claim 14, wherein the means for feeding comprises a single feed line.

19. The apparatus of claim 14, wherein the patch antenna further includes means for grounding, wherein the means for emitting is located between the means for increasing bandwidth and the means for grounding, and wherein each of the means for emitting, the means for increasing bandwidth, and the means for grounding comprises an electrically conductive material.

20. The apparatus of claim 14, wherein the patch antenna further includes means for grounding and 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, the means for emitting is located between the means for increasing bandwidth and the means for grounding, and the means for reducing the width is located between the means for emitting and the means for grounding.

21. The apparatus of claim 14, 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.

22. An antenna comprising:

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

a ground element;

a parasitic element;

a supplemental ground feed structure electrically coupled to the ground element;

wherein the radiating element is located between the ground element and the parasitic element, and the supplemental ground feed structure is located between the radiating element and the ground element.

23. The antenna of claim 22, 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.

24. The antenna of claim 22, wherein the radiating element includes an aperture located at a center of the radiating element or substantially at a center of the radiating element.

25. The antenna of claim 22, 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.

26. The antenna of claim 22, further comprising:

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

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 radiating element and the ground element, and the conductive via element located between the supplemental ground feed element and the ground element.

27. The antenna of claim 26, wherein a width of the single feed line is smaller with inclusion of the supplemental ground feed structure in the antenna than in the absence of the supplemental ground feed structure.

28. The antenna of claim 26, wherein the single feed line has a width of approximately 0.02λ

, where λ

is an operating wavelength of the antenna.