Antenna component and methods

• US 8,378,892 B2
• Filed: 09/17/2007
• Issued: 02/19/2013
• Est. Priority Date: 03/16/2005
• Status: Expired due to Fees

• Current Assignee: Pulse Finland Oy (Yageo Corporation)
• Original Assignee: Pulse Finland Oy (Yageo Corporation)
• Inventors: Sorvala, Juha, Annamaa, Petteri, Koskiniemi, Kimmo
• Primary Examiner(s): Choi, Jacob Y
• Assistant Examiner(s): Karacsony, Robert
• Application Number:
  US11/901,611
• Publication Number:
  US 20080088511A1
• Time in Patent Office: 1,982 Days
• Field of Search: 343/700.MS, 343/702, 343/833, 343/907, 343/908
• US Class Current: 343/700.MS
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40

Abstract

An antenna component (200) with a dielectric substrate and two radiating antenna elements. The elements are located on the upper surface of the substrate and there is a narrow slot (260) between them. The antenna feed conductor (241) is connected to the first antenna element (220), which is connected also to the ground by a short-circuit conductor (261). The second antenna element (230) is parasitic; it is galvanically connected only to the ground. The component is preferably manufactured by a semiconductor technique by growing a metal layer e.g. on a quartz substrate and removing a part of it so that the antenna elements remain. In this case the component further comprises supporting material (212) of the substrate chip. The antenna component is very small-sized because of the high dielectricity of the substrate to be used and mostly because the slot between the antenna elements is narrow. The efficiency of an antenna made by the component is high.

Claims

1. An antenna component, comprising:

a dielectric substrate having an upper surface and a first thickness, a conductive coating deposited on the upper surface and forming a first portion and a second portion, the upper surface comprising an area free from the conductive coating and substantially enveloping the first and the second portions, the first portion configured to be electrically coupled to a feed structure at a first location and to a ground plane at a second location, the first and the second locations disposed proximate a first edge of the upper surface; and

an electromagnetic coupling element disposed substantially between the first portion and the second portion, the coupling element configured to electromagnetically couple the second portion to the feed structure, the second portion further configured to be electrically coupled to the ground plane at a third location disposed proximate a second edge of the upper surface;

wherein said first and second edges are disposed substantially at opposite ends of the dielectric substrate; and

wherein;

the upper surface is characterized by third and fourth edges each configured substantially perpendicular to at least one of said first edge and said second edge;

said first edge and said third edge forming a first corner, said first edge and said fourth edge forming a second corner, said second edge and said third edge forming a third corner;

said first location is disposed adjacent said first corner so that said first location is substantially equidistant from each of said first edge and said third edge;

said second location is disposed adjacent said second corner so that said second location is substantially equidistant from each of said second edge and said third edge; and

said third location is disposed adjacent said third corner so that said third location is substantially equidistant from each of said first edge and said fourth edge.

2. The antenna component of claim 1, wherein the first and the second portions comprise a convex polygon shape.

3. The antenna component of claim 2, wherein the polygon comprises a right-angled triangle, and the coupling element is configured to separate a hypotenuse of the first portion from a hypotenuse of the second portion.

4. The antenna component of claim 1, wherein the coupling element comprises a linear slot disposed substantially diagonally on the upper surface.

5. The antenna component of claim 1, wherein the second portion is configured to be electrically coupled to the ground plane at a fourth location.

6. The antenna component of claim 5, wherein the first, the second, the third, and the fourth locations are electrically coupled to a support plate via electrical conductors disposed substantially external to said dielectric substrate.

7. The antenna component of claim 5, wherein the first, the second, the third, and the fourth locations are disposed substantially proximate first, second, third and fourth corner regions on the upper surface, respectively.

8. The antenna component of claim 1, wherein the coupling element comprises a slot comprised of at least one turn.

9. The antenna component of claim 1, wherein the ground plane is configured a predetermined distance away from the first and the second portions along at least a portion of a first edge and along at least a portion of a second edge of the dielectric substrate.

10. The antenna component of claim 1, wherein the second and the third locations are disposed distally relative to the electromagnetic coupling element.

11. An antenna component, comprising:

a dielectric substrate having an upper surface, the upper surface having a conductive coating, the conductive coating forming a first portion and a second portion, the upper surface comprising an area free from the conductive coating and substantially enveloping the first portion and the second portion, the first portion configured to be coupled to a feed structure at a first location and to a ground plane at a second location, the second portion configured to be coupled to the ground plane at third and fourth locations; and

an electromagnetic coupling element disposed substantially between the first portion and the second portion, the coupling element configured to electromagnetically couple the second portion to the feed structure;

wherein;

the second and the third locations are positioned distally relative to the electromagnetic coupling element; and

the upper surface comprises a first edge configured substantially perpendicular to said electromagnetic coupling element, and a second edge configured substantially perpendicular to said electromagnetic coupling element, said first edge and said second edge being disposed substantially at opposite ends of the dielectric substrate;

said first and said second location are disposed adjacent said first edge; and

said third and said fourth location are disposed adjacent said second edge; and

wherein;

the upper surface further comprises;

a third edge configured substantially perpendicular to at least one of said first edge and said second edge; and

a fourth edge configured substantially perpendicular to at least one of said first edge and said second edge;

said first edge and said third edge forming a first corner, said first edge and said fourth edge forming a second corner, said second edge and said third edge forming a third corner;

said first location is disposed adjacent said first corner so that said first location is substantially equidistant from each of said first edge and said third edge;

said second location is disposed adjacent said second corner so that said second location is substantially equidistant from each of said second edge and said third edge; and

said third location is disposed adjacent said third corner so that said third location is substantially equidistant from each of said first edge and said fourth edge.

12. The antenna component of claim 11, wherein the first, second, third, and fourth locations are disposed substantially proximate to first, second, third and fourth corners of the dielectric substrate, respectively.

13. Antenna apparatus comprising:

an antenna component comprising;

a dielectric substrate having an upper surface;

a first portion and a second portion disposed on the upper surface; and

an electromagnetic coupling element disposed substantially between the first portion and the second portion; and

a dielectric support configured to receive the dielectric substrate, the support having a feed point adapted to couple to an antenna feed, and at least a first short circuit point (SP) and a second short circuit point (SP) each adapted to couple to a ground plane, the support comprising an area of a first predetermined width and being free from any conductive coating along at least a portion of a first edge of the dielectric substrate;

wherein the first portion is configured to couple to the feed point via a first coupling point and first conductor, and to the first SP via a second coupling point and second conductor, and the second portion is configured to couple to the second SP via a third coupling point and third conductor, each of the first, second and third conductors disposed at least partly external to the dielectric substrate; and

wherein;

the first and second coupling points are disposed substantially in first and second corners of the first portion, respectively;

the third coupling point is disposed substantially within a corner of the second portion; and

each of the first and second coupling points, and the third coupling point, is disposed substantially equidistant from edges forming said first and second corners of said first portion, and said corner of said second portion, respectively.

14. The antenna of claim 13, wherein the support is adapted to be attached to a printed circuit board (PCB), the PCB comprising at least a portion of the ground plane and at least a portion of the antenna feed.

15. The antenna of claim 14, wherein said PCB further comprises a ground conductor, said ground conductor having an adjustable dimension, the adjustable dimension configured for tuning the antenna.

16. The antenna of claim 14, wherein the ground plane is arranged a first predetermined distance away from the dielectric substrate along at least a portion of a first edge of the support.

17. The antenna of claim 16, wherein the ground plane is arranged a second predetermined distance away from the dielectric substrate along at least a portion of at least one of a second or a third edge of the support, said at least one of a second or a third edge being non-coplanar with said first edge.

18. The antenna of claim 13, wherein said area is free from conductive coating along at least a portion of a second edge of the dielectric substrate.

19. The antenna of claim 13, wherein the antenna component further comprises:

an antenna filter disposed on the upper surface and electrically coupled to the first portion at first and second locations; and

a low-noise amplifier disposed on the upper surface and electrically coupled to said antenna filter.

20. The antenna of claim 19, wherein said antenna filter comprises a film bulk acoustic resonator electrically coupled to the first and the second locations by conductors disposed on the upper surface.

21. Antenna apparatus comprising:

an antenna component comprising;

a dielectric substrate having an upper surface;

a first portion and a second portion disposed on the upper surface; and

an electromagnetic coupling element disposed substantially between the first portion and the second portion; and

a dielectric support configured to receive the dielectric substrate, the support having a feed point adapted to couple to an antenna feed, and at least a first short circuit point (SP) and a second short circuit point (SP) each adapted to couple to a ground plane;

wherein;

the support is adapted to be attached to a printed circuit board (PCB), the PCB comprising at least a portion of the ground plane and at least a portion of the antenna feed;

the first SP and the second SP each are positioned distally relative to the electromagnetic coupling element; and

wherein;

the feed point and first SP, and the second SP, are each electrically coupled to respective first, second and third coupling points;

the first and second coupling points are disposed substantially in first and second corners of the first portion, respectively;

the third coupling point is disposed substantially within a corner of the second portion; and

each of the first and second coupling points, and the third coupling point, is disposed substantially equidistant from edges forming said first and second corners of said first portion, and said corner of said second portion, respectively.

22. The antenna of claim 21, wherein:

the support further comprises a third SP; and

the second portion is further configured to couple to the third SP via a first detachable electrical conductor disposed substantially external to the dielectric substrate.

23. The antenna of claim 21, wherein:

the first portion is configured to couple to the feed point and the first SP via a second and a third detachable electrical conductor disposed substantially external to the dielectric substrate; and

the second portion is configured to couple to the second SP via a fourth detachable electrical conductor disposed substantially external to the dielectric substrate.

24. The antenna of claim 21, wherein the support comprises an area of a first predetermined width, the area being free from any conductive coating along at least a portion of a first edge of the dielectric substrate.