Structural body, printed board, antenna, transmission line waveguide converter, array antenna, and electronic device

• US 9,269,999 B2
• Filed: 04/23/2010
• Issued: 02/23/2016
• Est. Priority Date: 04/30/2009
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Toyao, Hiroshi, Ando, Noriaki
• Primary Examiner(s): Levi, Dameon E
• Assistant Examiner(s): LINDGREN BALTZEL, ANDREA J
• Application Number:
  US13/254,326
• Publication Number:
  US 20120032865A1
• Time in Patent Office: 2,132 Days
• Field of Search: 343/835
• US Class Current: 1/1
• CPC Class Codes: H01L 2223/6677 for antenna, e.g. antenna included within housing of semiconductor device antennas per se H01Q
• CPC Class Codes: H01L 2224/16227 the bump connector connecting to a bond pad of the item
• CPC Class Codes: H01L 2924/15192 Resurf arrangement of the internal vias
• CPC Class Codes: H01P 1/2005 Electromagnetic photonic bandgaps [EPB], or photonic bandgaps [PBG]
• CPC Class Codes: H01P 3/08 Microstrips; Strip lines
• CPC Class Codes: H01Q 15/008 said selective devices having Sievenpipers' mushroom elements
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H01Q 21/065 Patch antenna array
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: H05K 1/0236 Electromagnetic band-gap structures
• CPC Class Codes: H05K 1/036 Multilayers with layers of different types
• CPC Class Codes: H05K 1/165 incorporating printed inductors
• CPC Class Codes: H05K 2201/0191 wherein the thickness of the dielectric plays an important role
• CPC Class Codes: H05K 2201/09318 Core having one signal plane and one power plane

Abstract

A structural body of the invention includes a first conductor plane (1), a plurality of second conductor planes (4) of which at least a portion is provided facing the first conductor plane (1), and a transmission line (6), having an open end, which is disposed between the first conductor plane (1) and the second conductor plane (4), electrically connected to any one conductor plane of the first conductor plane (1) or the second conductor plane (4) through a conductor connection portion (5) and provided facing the other conductor plane. A unit structure including at least the second conductor plane (4), the transmission line (6), and the conductor connection portion (5) is repeatedly disposed.

Claims

1. A structural body comprising:

a first conductor; and

a plurality of unit cells, each unit cell comprising;

a second conductor, which is provided on a different layer from that of the first conductor, of which at least a portion is facing the first conductor; and

a transmission line, having an open end, which is disposed between the first conductor and the second conductor, electrically connected to the first conductor through a conductor connection portion and provided facing the second conductor,

wherein the open end is located inside an area between the first conductor and the second conductor.

2. The structural body according to claim 1, wherein the unit cells are repeatedly disposed.

3. The structural body according to claim 1, wherein the first conductor is common to plurality of unit cells which are repeatedly disposed.

4. The structural body according to claim 1, wherein a surface area of the first conductor is different from a surface area of the second conductor in a planar view.

5. The structural body according to claim 1, wherein the first conductor is a return path of the transmission line.

6. The structural body according to claim 1, wherein the surface of the second conductor facing the first conductor is in parallel to the surface of the first conductor facing the second conductor.

7. The structural body according to claim 1, further comprising a dielectric layer disposed between a conductor of the first conductor and the second conductor and the transmission line,

wherein the conductor connection portion is a conductor via provided through the dielectric layer.

8. The structural body according to claim 1, further comprising a dielectric layer disposed between a conductor, of the first conductor and the second conductor, and the transmission line, and a second dielectric layer disposed between another conductor, of the first conductor and the second conductor, and the transmission line,

wherein an opening is provided in the other conductor, and

the conductor connection portion is a conductor via provided through the dielectric layer and the second dielectric layer, and a portion thereof is disposed within the opening and is not in contact with the other conductor.

9. The structural body according to claim 1, wherein the unit structure is periodically disposed one-dimensionally or two-dimensionally on the plane surface parallel to the first conductor.

10. The structural body according to claim 1, wherein the transmission line is provided two-dimensionally on the surface facing the first conductor, and the planar shape of the transmission line is a spiral shape.

11. The structural body according to claim 1, wherein the transmission line is provided two-dimensionally on the surface facing the first conductor plane, and the planar shape of the transmission line is a meandering shape.

12. The structural body according to claim 1, wherein the transmission line comprises a plurality of ends, and at least one of the plurality of ends is electrically connected to the conductor connection portion.

13. The structural body according to claim 1, wherein the transmission line comprises a branch portion and branch lines mutually branched from the branch portion, and the line lengths of the branch lines are different from each other.

14. The structural body according to claim 1, wherein the unit structure comprises a bandgap in a dispersion relation of the frequency to the wave number or the wavelength of electromagnetic waves incident on the unit structure, and a portion of an electromagnetic bandgap structure is formed by the unit structure.

15. A printed board comprising the structural body according to claim 1.

16. The printed board according to claim 15, wherein a reflective plate is formed by the structural body.

17. The printed board according to claim 16, wherein a plurality of devices is provided in the printed board, and the structural body is provided so as to block at least one propagation path of electromagnetic waves between at least two devices of the plurality of devices.

18. The printed board according to claim 15, wherein a power feeding portion that supplies an electrical signal is provided in at least one unit structure constituting the structural body.

19. An antenna comprising the structural body according to claim 1.

20. The antenna according to claim 19, wherein a reflective plate is formed by the structural body.

21. The antenna according to claim 19, wherein a power feeding portion that supplies an electrical signal is provided in at least one unit structure.

22. The antenna according to claim 20, wherein a plurality of unit structures is repeatedly disposed, and

the unit structures comprise at least one auxiliary conductor which is provided on a plane surface different from a plane surface having the second conductor provided thereon, and is disposed so as to overlap two of the second conductors adjacent to each other.

23. The antenna according to claim 22, wherein the auxiliary conductor is disposed on the same plane surface as the plane surface having the transmission line disposed thereon.

24. The antenna according to claim 21, wherein the power feeding portion is provided on the same plane surface as the plane surface having the first conductor provided thereon, and is electrically connected to the first conductor.

25. The antenna according to claim 21, wherein the power feeding portion comprises a coplanar line which is provided on the same plane surface as the plane surface having the one conductor provided thereon and is connected to any one of the conductor connection portions.

26. A transmission line waveguide converter comprising the structural body according to claim 1 as a reflective plate.

27. An array antenna configured by disposing a plurality of array elements in the same plane surface, each of the array element is an antenna according to claim 20.

28. An electronic device comprising the structural body according to claim 1.

29. An electronic device comprising the printed board according to claim 15.

30. An electronic device comprising the antenna according to claim 19.

31. An electronic device comprising the transmission line waveguide converter according to claim 26.

32. An electronic device comprising the array antenna according to claim 27.