ELECTROMAGNETIC WAVE PROPAGATION PATH AND ELECTROMAGNETIC WAVE PROPAGATION DEVICE

• US 20140167882A1
• Filed: 07/11/2011
• Published: 06/19/2014
• Est. Priority Date: 07/11/2011
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Shinoda, Hiroshi, Terada, Takahide, Hara, Kazunori
• Granted Patent: US 9,362,605 B2
• Time in Patent Office: Days
• US Class Current: 333/136
• CPC Class Codes: H01P 3/023 Fin lines; Slot lines
• CPC Class Codes: H01P 5/028 between strip lines
• CPC Class Codes: H01P 5/12 Coupling devices having more than two ports H01P5/04 takes precedence

Abstract

An electromagnetic wave propagation device includes multiple planar propagation media each formed by laminating at least one planar conductor and at least one planar dielectric, multiple transceivers for transmitting and receiving information among electronic apparatuses, and a first interface for transmitting and receiving the electromagnetic wave between the transceivers and the planar propagation media. Planar dielectric spacers are provided for isolating the multiple planar propagation media from one another. The planar propagation medium is disposed to have an overlapped part with at least the other of the planar propagation media so that an obverse face of the medium and a reverse face of the other medium are at least partially overlapped with each other. The planar conductor is provided with an electromagnetic wave linking unit at the overlapped part that transmits and receives the electromagnetic wave between the planar propagation media.

Claims

1. An electromagnetic wave propagation device comprising:

multiple planar propagation media;

planar dielectric spacers disposed for isolating the multiple planar propagation media from one another; and

a first interface for transmitting and receiving an electromagnetic wave between the planar propagation media and a transceiver,

wherein each of the planar propagation media is formed by laminating at least one planar conductor and at least one planar dielectric;

each of the planar propagation media is disposed to have an overlapped part with at least another of the planar propagation media; and

the planar conductor is provided with an electromagnetic wave linking unit at the overlapped part that transmits and receives the electromagnetic wave between the planar propagation media.

2. The electromagnetic wave propagation device according to claim 1,

wherein the planar propagation medium is formed by laminating the planar conductor, the planar dielectric and a planar mesh conductor, sequentially;

and

the planar mesh conductor transmits and receives the electromagnetic wave to and from the transceiver.

3. The electromagnetic wave propagation device according to claim 1,

wherein a first planar conductor, the planar dielectric and a second planar conductor are sequentially laminated to form at least one of the planar propagation media;

and

a slot is formed in the second planar conductor for transmitting and receiving the electromagnetic wave to and from the transceiver.

4. The electromagnetic wave propagation device according to claim 1, wherein a slot is formed in the planar conductor at the overlapped part as at least one of the electromagnetic wave linking units.

5. The electromagnetic wave propagation device according to claim 1, wherein the planar conductor has a mesh structure at the overlapped part as at least one of the electromagnetic wave linking units.

6. The electromagnetic wave propagation device according to claim 4, wherein the planar propagation medium is disposed so that a distance from an end surface to the slot in a propagation direction of the electromagnetic wave in the planar propagation medium is set to ¼

×

(integer multiple of effective wavelength).

7. The electromagnetic wave propagation device according to claim 1, wherein the planar propagation media are disposed so that the overlapped part between the two planar propagation media in a propagation direction of the electromagnetic wave in the planar propagation medium has a distance set to ¼

×

(integer multiple of effective wavelength).

8. The electromagnetic wave propagation device according to claim 4, wherein a dimension of the slot formed in one of the planar propagation media is smaller than a dimension of the slot formed in the other of the planar propagation media disposed having an obverse face of the medium partially overlapped with a reverse face of the other medium.

9. The electromagnetic wave propagation device according to claim 2, wherein a pitch of the planar mesh conductor of the planar propagation medium at the overlapped part is smaller than a pitch at a non-overlapped part.

10. The electromagnetic wave propagation device according to claim 1,

wherein the multiple planar propagation media are configured to have a first planar propagation medium and multiple second planar propagation media;

the second planar propagation medium includes the overlapped part structured to have at least a part overlapped between an obverse face of the medium and a reverse face of the other medium in the same propagation direction as the propagation direction of the electromagnetic wave in the first planar propagation medium, and the other part bent to the overlapped part to incline the propagation direction of the electromagnetic wave to the second planar propagation media; and

the first planar propagation medium and the multiple second planar propagation media are three-dimensionally branched for extension.

11. The electromagnetic wave propagation device according to claim 10,

wherein the multiple second planar propagation media are connected in an axial direction of the first planar propagation medium at predetermined intervals so that the multiple planar propagation media are three-dimensionally branched for extension;

the electromagnetic wave from the first planar propagation medium is input to the planar propagation media via the electromagnetic wave linking units provided at the respective overlapped parts; and

each distribution ratio of each electromagnetic wave from the first planar propagation medium to the second planar propagation media is adjusted in accordance with a dimension of the respective electromagnetic wave linking units.

12. The electromagnetic wave propagation device according to claim 10,

wherein a parallel transformation type interface connected to a communication base station is connected to the first planar propagation medium;

and

an electronic apparatus for transmitting and receiving the electromagnetic wave to and from the transceiver is connected to the transceiver connected to the second planar propagation media via the first interface.

13. An electromagnetic wave propagation path comprising:

multiple planar propagation media; and

planar dielectric spacers disposed for isolating the multiple planar propagation media from one another,

wherein each of the planar propagation media is formed by laminating at least one planar conductor and at least one planar dielectric;

each of the planar propagation media is disposed to have an overlapped part with at least another of the planar propagation media; and

the planar conductor is provided with an electromagnetic wave linking unit at the overlapped part for transmitting and receiving the electromagnetic wave between the planar propagation media.

14. The electromagnetic wave propagation path according to claim 13, wherein the planar conductor has a slot at the overlapped part as at least one of the electromagnetic wave linking units.

15. The electromagnetic wave propagation path according to claim 13, wherein the planar conductor has a mesh structure at the overlapped part as at least one of the electromagnetic wave linking units.