STRUCTURE, PRINTED CIRCUIT BOARD, ANTENNA, TRANSMISSION LINE TO WAVEGUIDE CONVERTER, ARRAY ANTENNA, AND ELECTRONIC DEVICE

• US 20110134010A1
• Filed: 07/31/2009
• Published: 06/09/2011
• Est. Priority Date: 08/01/2008
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Toyao, Hiroshi, Ando, Noriaki
• Granted Patent: US 8,890,761 B2
• Time in Patent Office: Days
• US Class Current: 343/844
• CPC Class Codes: H01P 1/2005 Electromagnetic photonic bandgaps [EPB], or photonic bandgaps [PBG]
• CPC Class Codes: H01P 5/028 between strip lines
• CPC Class Codes: H01Q 21/08 the units being spaced along or adjacent to a rectilinear path waveguide fed H01Q21/0037
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• 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 1/165 incorporating printed inductors
• CPC Class Codes: H05K 2201/09309 Core having two or more power planes; Capacitive laminate of two power planes

Abstract

A structure includes a first conductor plane; a plurality of second conductor planes, at least a portion thereof being provided facing the first conductor plane; a transmission line that is provided with at least a portion thereof facing one conductor plane of the first conductor plane and the second conductor plane, and that is disposed on an opposite side of the other conductor plane with respect to the one conductor plane; and a first conductor connecting portion that electrically connects the transmission line with the other conductor plane, and a unit structure that includes at least the second conductor plane, the transmission line, and the first conductor connecting portion is repeatedly disposed.

Claims

1. A structure comprising:

a first conductor plane;

a plurality of second conductor planes, at least a portion thereof being provided facing the first conductor plane;

a transmission line that is provided with at least a portion thereof facing one conductor plane of the first conductor plane and the second conductor plane, and that is disposed on an opposite side of the other conductor plane with respect to the one conductor plane; and

a first conductor connecting portion that electrically connects the transmission line with the other conductor plane,

wherein a plurality of unit structures each including at least the second conductor plane, the transmission line, and the first conductor connecting portion are repeatedly disposed.

2. The structure according to claim 1, wherein the unit structures are periodically arrayed one-dimensionally or two-dimensionally.

3. The structure according to claim 1, wherein the first conductor plane is in common at the plurality of unit structures that are repeatedly disposed.

4. The structure according to claim 1, wherein each of the unit structures has a band gap in a dispersion relation of frequency with respect to a wave number or a wavelength of an electromagnetic wave that is incident upon the unit structure, and an electromagnetic band gap structure is constituted by including each of the unit structures.

5. The structure according to claim 1, wherein a dielectric layer is provided between the first conductor plane and the second conductor plane, and the first conductor connecting portion is a conductor via that is provided passing through the dielectric layer.

6. The structure according to claim 5, wherein an opening is provided in the one conductor plane, and the conductor via intersects with the one conductor plane by passing through the opening, and makes no contact with the one conductor plane.

7. The structure according to claim 1, wherein the one conductor plane is a return path of the transmission line.

8. The structure according to claim 1, wherein a dimension of the one conductor plane in a surface direction of a surface that faces the second conductor plane differs from a dimension of the second conductor plane in a surface direction of a surface that faces the first conductor plane.

9. The structure according to claim 1, wherein a surface of the second conductor plane that faces the first conductor plane is parallel with a surface of the first conductor plane that faces the second conductor plane.

10. The structure according to claim 1, wherein the transmission line includes a plurality of end portions, and at least one of the plurality of end portions is electrically connected with the first conductor connecting portion.

11. The structure according to claim 1, wherein the transmission line includes a branching portion and branch lines that are mutually branched from the branching portion, and the line lengths of the branch lines mutually differ.

12. The structure according to claim 1, wherein the transmission line is planarly provided on a surface facing the one conductor plane, and the planar shape of the transmission line is a spiral shape.

13. The structure according to claim 1, wherein the transmission line is planarly provided on a surface facing the one conductor plane, and planar shape of the transmission line is a meander shape.

14. The structure according to claim 1, wherein the transmission line is covered by a dielectric portion.

15. The structure according to claim 1, further comprising:

a second conductor connecting portion that electrically connects the one conductor plane and the transmission line,

wherein a portion at which the transmission line is electrically connected to the second conductor connecting portion and a portion at which the transmission line is electrically connected to the first conductor connecting portion are arranged at different positions in an extending direction of the transmission line.

16. The structure according to claim 1, wherein the transmission line is electrically insulated with respect to the one conductor plane.

17. A printed circuit board comprising the structure according to claim 1.

18. The printed circuit board according to claim 17, wherein a reflecting plate is constituted by the structure.

21. An antenna comprising the structure according to claim 1.

22. The antenna according to claim 21, wherein a reflecting plate is constituted by the structure.

19-20. -20. (canceled)

23-30. -30. (canceled)