Multilayer waveguide comprising at least one transition device between layers of this multilayer waveguide

Patent metadata

Field	Value
Publication number	US-10879577-B2
Application number	US-201716343258-A
Country	US
Kind code	B2
Filing date	Oct 16, 2017
Priority date	Oct 21, 2016
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

The present disclosure relates to a multilayer electromagnetic waveguide that includes a plurality of layers forming guide channels for an electromagnetic wave, and at least one transition device including at least one dielectric layer between two guide channels, referred to as coupled guide channels, extending as an extension. Each transition device includes at least one adaptation channel extending in a longitudinal direction, and each adaptation channel is defined by two electrically conductive walls. At least one wall extends along the dielectric spacer layer from one end of the coupled guide channel, over a length suitable for optimizing the transmission of an electromagnetic wave between the two coupled guide channels.

First claim

The invention claimed is:

1. A multilayer electromagnetic waveguide comprising:
several superimposed layers forming guide channels for guiding an electromagnetic wave; and
at least one transition device comprising at least one dielectric interlayer between two guide channels, provided as coupled guide channels, extending according to a direction of transmission of the electromagnetic wave between the coupled guide channels via the transition device,
wherein each of the at least one transition device comprises at least one adaption channel extending from the coupled guide channels, according to a longitudinal direction secant to the transmission direction,
wherein each of the at least one adaptation channel is delimited by at least two electrically-conductive walls, provided as adaptation walls, spaced from each other by the dielectric interlayer of the transition device,
wherein each of the adaptation walls extend according to the longitudinal direction along the dielectric interlayer from one end, provided as coupling end, of one of the coupled guide channels, and at least one of the adaptation walls extend according to the longitudinal direction over a length selected between 0.1λ and 0.5λ, to obtain an input impedance of at least substantially zero between the adaptation walls of the adaptation channel at level of the coupling ends of the coupled guide channels to optimize the transmission of the electromagnetic wave between the coupled guide channels.

2. The waveguide according to claim 1 , wherein the longitudinal direction of each of the at least one adaptation channel is orthogonal to the transmission direction.

3. The waveguide according to claim 1 , wherein at least one of the adaptation walls of the at least one adaptation channel includes a metallic blade.

4. The waveguide according to claim 1 , wherein the at least one adaptation wall of the at least one adaptation channel is formed by a plurality of contiguous electrically-conductive vias parallel to each other.

5. The waveguide according to claim 4 , wherein the vias extend along the dielectric interlayer from the coupling end.

6. The waveguide according to claim 4 , wherein the vias extend along the dielectric interlayer orthogonally to the longitudinal direction of the at least one adaptation channel and to the transmission direction.

7. The waveguide according to claim 1 , wherein the dielectric interlayer is interposed between two of the superimposed layers in which extend the coupled guide channels and in that each of the adaptation walls extends between the dielectric interlayer and one of the superimposed layers.

8. The waveguide according to claim 1 , wherein each of the coupled guide channels is delimited by the at least two electrically-conductive walls, provided as guide walls, spaced from each other.

9. The waveguide according to claim 1 , wherein each of the coupled guide channels is delimited by guide walls parallel in pairs and arranged to form a polygonal cross-section of the coupled guide channel.

10. The waveguide according to claim 1 , wherein the at least one transition device comprises two of the at least one adaptation channel extending opposite to each other.

11. An antenna comprising at least one waveguide according to claim 1 .

12. A method for manufacturing a multilayer electromagnetic waveguide comprising:
superimposing several layers to form guide channels for guiding an electromagnetic wave; and
providing at least one transition device comprising at least one dielectric interlayer between two guide channels, provided as coupled guide channels, extending according to a direction of transmission of the electromagnetic wave between the coupled guide channels via the transition device,
wherein each of the at least one transition device comprises at least one adaptation channel extending from the coupled guide channels, according to a longitudinal direction secant to the transmission direction,
wherein each of the at least one adaptation channel is delimited by at least two electrically-conductive walls, provided as adaptation walls, spaced from each other by the dielectric interlayer of the transition device,
wherein each of the adaptation walls extends according to the longitudinal direction along the dielectric interlayer from one end, provided as a coupling end, of one of the coupled guide channels, and at least one of the adaptation walls extends according to the longitudinal direction over a length selected so as to obtain an input impedance of at least substantially zero between the adaptation walls of the adaptation channel at a level of the coupling ends of the coupled guide channels to optimize the transmission of the electromagnetic wave between the coupled guide channels.

Assignees

• Centre Nat Detudes Spatiales Cnes
• Centre Nat Rech Scient
• Luniversite De Rennes 1

Inventors

• Capet Nicolas
• Foglia Manzillo Francesco
• Tekkouk Karim
• Sauleau Ronan
• Ettorre Mauro

Classifications

• H01P5/022

  Transitions between lines of the same kind and shape, but with different dimensions · CPC title

• H01P3/16 Primary

  Dielectric waveguides, i.e. without a longitudinal conductor · CPC title

• H01P5/024 Primary

  between hollow waveguides · CPC title