Signal transmission line including a flexible resin laminate having interior hollow portions overlapping the signal transmission line with the hollow portions having a vent hole

Patent metadata

Field	Value
Publication number	US-11658376-B2
Application number	US-202217568865-A
Country	US
Kind code	B2
Filing date	Jan 5, 2022
Priority date	Jan 27, 2016
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A signal transmission line includes a laminate, a signal conductor, a hollow portion, and a reinforcing conductor. The laminate includes a flexible laminate including resin layers each of which has flexibility. The signal conductor extends in a signal transmission direction of the laminate and is disposed in an intermediate position in a laminating direction of the resin layers. The hollow portion is in the laminate and defined by an opening provided at a portion of the plurality of resin layers. The reinforcing conductor is in the laminate. The hollow portion is disposed at a position overlapping with the signal conductor, in a plan view of the laminate from a surface perpendicular or substantially perpendicular to the laminating direction. The reinforcing conductor is disposed at a position different from the position of the hollow portion in a plan view.

First claim

What is claimed is:

1. A signal transmission line comprising:
a laminate including a plurality of resin layers each of which has flexibility, the plurality of resin layers being laminated, and the laminate having flexibility;
a signal conductor extending in a signal transmission direction of the laminate and being provided in an intermediate position in a laminating direction in which the plurality of resin layers are laminated;
a hollow portion provided in the laminate and defined by an opening provided at a portion of the plurality of resin layers; and
a reinforcing conductor provided in the laminate; wherein
the hollow portion is disposed at a position that overlaps with the signal conductor when viewed in the laminating direction;
the hollow portion is exposed to outside of the laminate through a vent hole provided in the laminate; and
the reinforcing conductor is disposed at a position different from the position of the hollow portion when viewed in the laminating direction.

2. The signal transmission line according to claim 1 further comprising:
a ground conductor; wherein
the ground conductor faces the signal conductor with the hollow portion interposed therebetween in the laminating direction.

3. The signal transmission line according to claim 1 , wherein
the reinforcing conductor includes a plurality of reinforcing conductors; and
the plurality of reinforcing conductors are disposed in the laminating direction.

4. The signal transmission line according to claim 3 , wherein the plurality of reinforcing conductors are connected to each other through an interlayer connection conductor in the laminating direction.

5. The signal transmission line according to claim 1 , wherein
the reinforcing conductor includes a plurality of reinforcing conductors; and
the plurality of reinforcing conductors are disposed at intervals in the signal transmission direction.

6. The signal transmission line according to claim 1 , wherein
the signal conductor is provided on a resin layer of the plurality of resin layers that includes a first portion that does not overlap with the hollow portion and a second portion that overlaps with the hollow portion; and
a thickness of the first portion is smaller than a thickness of the second portion.

7. The signal transmission line according to claim 1 , wherein the hollow portion is filled with an inert gas.

8. The signal transmission line according to claim 1 , wherein
the signal conductor includes a plurality of signal conductors;
the plurality of signal conductors are disposed in a width direction perpendicular or substantially perpendicular to the laminating direction in the flexible laminate;
the flexible laminate includes an intermediate holding portion that does not include the hollow portion between the plurality of signal conductors, in the width direction; and
the intermediate holding portion includes the reinforcing conductor.

9. The signal transmission line according to claim 8 , wherein the reinforcing conductor provided in the intermediate holding portion is grounded.

Assignees

• Murata Manufacturing Co

Inventors

• Iida Kanto
• Ikemoto Nobuo

Classifications

• H01P3/088

  Stacked transmission lines · CPC title

• H01P3/003 Primary

  Coplanar lines · CPC title

• H01P3/087

  Suspended triplate lines · CPC title

• H01P3/08

  Microstrips; Strip lines · CPC title

• H01P3/085

  Triplate lines · CPC title