Deployment structure comprised of flat panels with waveguides disposed therein, where the flat panels are rotated into engagement with each other to couple the waveguides

Patent metadata

Field	Value
Publication number	US-10290913-B2
Application number	US-201414900048-A
Country	US
Kind code	B2
Filing date	Jun 19, 2014
Priority date	Jun 19, 2013
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

Provided is a high-frequency wave feeding system capable of feeding microwaves with little loss and without addition of resistive noise, using a simple deployment mechanism. The system includes a first waveguide fixed to a first structure of a deployment structure and having a choke flange, and a second waveguide fixed to a second structure of the deployment structure and having a cover flange. When the deployment structure is in a deployed state, the choke flange and the cover flange face each other so that high-frequency waves are fed to the deployment structure via the first and second waveguides.

First claim

The invention claimed is:

1. A deployment structure comprising:
a plurality of flat panels being deployed by rotation around an axis of rotation; and
a respective waveguide provided to each of the plurality of flat panels for feeding high-frequency waves from one to another of the plurality of flat panels when the plurality of flat panels are deployed,
wherein the respective waveguide is provided with respect to the corresponding flat panel so that a direction of propagation of the high-frequency waves is parallel to the flat panel and perpendicular to the axis of rotation, and
wherein a choke flange provided at an end of the respective waveguide that is provided to one of the adjacent flat panels and a cover flange provided at an end of the respective waveguide that is provided to another of the adjacent flat panels are configured to be arranged such that the choke flange and the cover flange face each other and are spaced apart from each other when the plurality of flat panels are deployed.

2. The deployment structure according to claim 1 , wherein a shape of a choke groove of the choke flange is formed of a non-circular curved line which passes through points which are located at a length of λ/4 from sides of a rectangle of cross section of the respective waveguide provided to the one of the adjacent flat panels, the sides having a largest magnitude of an electric field, and
wherein λ is a wavelength.

3. The deployment structure according to claim 1 , wherein each of the plurality of flat panels is connected to a movable portion of a hinge and is configured to be deployed by rotational operation of the hinge, and each waveguide is integrally constructed with the movable portion of the hinge.

4. The deployment structure according to claim 1 , wherein a choke groove of the choke flange is circular in shape.

5. The deployment structure according to claim 1 , wherein a shape of a choke groove of the choke flange is formed of a non-circular curved line.

6. The deployment structure according to claim 3 , wherein the deployment structure is a part of a deployable antenna.

7. The deployment structure according to claim 3 , wherein a choke groove of the choke flange is circular in shape.

8. The deployment structure according to claim 3 , wherein a shape of a choke groove of the choke flange is formed of a non-circular curved line which passes through points which are located at a length of λ/4 from sides of a rectangle of cross section of the respective waveguide provided to the one of the adjacent flat panels, the sides having a largest magnitude of an electric field, and
wherein λ is a wavelength.

9. The deployment structure according to claim 3 , wherein a shape of a choke groove of the choke flange is formed of a non-circular curved line.

10. The deployment structure according to claim 1 , wherein the deployment structure is a part of a deployable antenna.

Assignees

• Japan Aerospace Exploration

Inventors

• Saito Hirobumi
• TOMIKI Atsushi

Classifications

• H01P1/042 Primary

  Hollow waveguide joints · CPC title

• H01P1/064 Primary

  the axis of rotation being perpendicular to the transmission path, e.g. hinge joint · CPC title

• H01Q1/288

  Satellite antennas · CPC title

• H01P5/024

  between hollow waveguides · CPC title

• H01P3/127

  with a circular, elliptic, or parabolic cross-section · CPC title