DIELECTRIC WAVEGUIDE-PATH DEVICE

• US 20170155180A1
• Filed: 11/22/2016
• Published: 06/01/2017
• Est. Priority Date: 11/26/2015
• Status: Active Grant

• Current Assignee: Kazuyuki Ouchi
• Original Assignee: Kazuyuki Ouchi
• Inventors: OUCHI, Kazuyuki
• Granted Patent: US 10,446,900 B2
• Time in Patent Office: Days
• CPC Class Codes: H01P 3/16 Dielectric waveguides, i.e. without a longitudinal conductor
• CPC Class Codes: H01P 5/188 the guides being dielectric waveguides
• CPC Class Codes: H01Q 1/00 Details of, or arrangements associated with, antennas arrangements for varying orientation of directional pattern H01Q3/00

Abstract

Provided is a dielectric waveguide-path device in which it is possible to accurately, effectively, and less-noisily input and output an external signal.

A refractive index n of a dielectric material is larger than a refractive index of the outside in a lateral direction X and/or a vertical direction Y perpendicular to an electromagnetic wave travelling direction Z, the inside of a waveguide-path has slow electromagnetic wave propagation velocity, compared to an area on the outside, the maximum dimension in the lateral direction and/or the vertical direction of the waveguide-path has a dimension which is specified by a formula below, an electric field lateral vibration mode curve in the waveguide-path and an electric field attenuation curve outside of the waveguide-path are continuous on both surfaces in the lateral direction and/or the vertical direction, and an electromagnetic wave is transmitted in the form of a cosine distribution or a sine distribution in the Z direction while being totally reflected by both surfaces. The dielectric waveguide-path device has an input electrode structure or an output electrode structure, in which a plurality of electrodes or electrode portions are arranged at regular intervals with respect to the Z direction, on the inside or the surface thereof.

tan(k_sa/2)=k_f/k_s, or tan(k_sa/2)=−k_s/k_f. Here, k_s:

propagation constant of an electromagnetic wave low-speed area, k_f: propagation constant of an electromagnetic wave high-speed area, and a: maximum dimension in the X direction and/or the Y direction of the waveguide-path.

Claims

1. A dielectric waveguide-path device in which a waveguide-path is configured of a dielectric material, and when an electromagnetic wave travelling direction of the waveguide-path is set to be a Z direction and directions perpendicular to the Z direction and perpendicular to each other are set to be an X direction and a Y direction, a refractive index n of the dielectric material of the waveguide-path is larger than a refractive index of the outside in the X direction and/or the Y direction,

wherein the waveguide-path inner region has slow electromagnetic wave propagation velocity, compared to an area on the outside in the X direction and/or the Y direction, the maximum dimension in the X direction and/or the Y direction of the waveguide-path has a dimension which is specified by formula 1, whereby a lateral vibration mode curve of an electric field inherent in the waveguide-path and an electric field attenuation curve outside of the waveguide-path are continuous on both surfaces of the waveguide-path in the X direction and/or the Y direction, an electromagnetic wave in a lateral vibration mode of an electric field is transmitted in the form of a cosine distribution or a sine distribution in the Z direction while being totally reflected by both surfaces in the X direction and/or the Y direction of the waveguide-path, and

the waveguide-path has an input electrode structure in which a plurality of electrodes or electrode portions extending in the X direction and/or the Y direction are arranged at regular intervals with respect to the Z direction, on the inside or the surface thereof.

tan(k_sa/2)=k_f/k_s, or

tan(k_sa/2)=−

k_s/k_f  

 

[Formula 1]

(here, the former expression is an expression when an electromagnetic wave is propagated in a cosine (cos) distribution, and the latter expression is an expression when an electromagnetic wave is propagated in a sine (sin) distribution, k_s;

propagation constant of an electromagnetic wave low-speed area, k_f;

propagation constant of an electromagnetic wave high-speed area, and a;

maximum dimension in the X direction and/or the Y direction of the waveguide-path.)

3. The dielectric waveguide-path device according to claim 1, wherein an interval in the Z direction of the plurality of electrodes or electrode portions is an interval of ½

of a wavelength in the electromagnetic wave travelling direction Z, which is determined by a material of a dielectric and the maximum dimension in the X direction and/or the Y direction of the waveguide-path, and the dielectric waveguide-path device is made such that a high-frequency current is applied between the electrodes adjacent to each other, or an electric signal is output from between the electrodes adjacent to each other.

4. The dielectric waveguide-path device according to claim 1, wherein an outer peripheral shape which is configured by the plurality of electrodes or electrode portions has a shape satisfying formula 2.

5. The dielectric waveguide-path device according to claim 1, wherein an outer peripheral shape which is configured by the plurality of electrodes or electrode portions has a shape of a portion or the whole of a cosine curve or a sine curve with respect to the waveguide-path width direction.

6. The dielectric waveguide-path device according to claim 1, wherein an outer peripheral shape which is configured by the plurality of electrodes or electrode portions has a rectangular shape.

7. The dielectric waveguide-path device according to claim 1, wherein the dielectric has a shape corresponding to a portion or the whole of a cosine curve or a sine curve, at an end face thereof in the electromagnetic wave travelling direction, or has metal at an end portion thereof.

8. The dielectric waveguide-path device according to claim 1, wherein the dielectric has a rectangular shape in vertical section, a circular shape in vertical section, or an elliptical shape in vertical section.

9. The dielectric waveguide-path device according to claim 1, further comprising:

an array of electrodes or electrode portions having an output electrode structure, wherein an electric field lateral vibration mode of the maximum order which is determined by the waveguide-path width is inherent in the waveguide-path.

2. A dielectric waveguide-path device in which a waveguide-path is configured of a dielectric material, and when an electromagnetic wave travelling direction of the waveguide-path is set to be a Z direction and directions perpendicular to the Z direction and perpendicular to each other are set to be an X direction and a Y direction, a refractive index n of the dielectric material of the waveguide-path is larger than a refractive index of the outside in the X direction and/or the Y direction,

wherein the waveguide-path inner region has slow electromagnetic wave propagation velocity, compared to an area on the outside in the X direction and/or the Y direction, the maximum dimension in the X direction and/or the Y direction of the waveguide-path has a dimension which is specified by formula 1, whereby a lateral vibration mode curve of an electric field inherent in the waveguide-path and an electric field attenuation curve outside of the waveguide-path are continuous on both surfaces of the waveguide-path in the X direction and/or the Y direction, an electromagnetic wave in a lateral vibration mode of an electric field is transmitted in the form of a cosine distribution or a sine distribution in the Z direction while being totally reflected by both surfaces in the X direction and/or the Y direction of the waveguide-path,

the waveguide-path has an output electrode structure in which a plurality of electrodes or electrode portions extending in the X direction and/or the Y direction are arranged at regular intervals with respect to the Z direction, on the inside or the surface thereof.

tan(k_sa/2)=k_f/k_s, or

tan(k_sa/2)=−

k_s/k_f  

 

[Formula 1]

(here, the former expression is an expression when an electromagnetic wave is propagated in a cosine (cos) distribution, and the latter expression is an expression when an electromagnetic wave is propagated in a sine (sin) distribution, k_s;

propagation constant of an electromagnetic wave low-speed area, k_f;

propagation constant of an electromagnetic wave high-speed area, and a;

maximum dimension in the X direction and/or the Y direction of the waveguide-path.)