Switch matrices

Abstract

A switch matrix having a plurality of switch devices each of which has switch terminals is disclosed. An input side and an output side of the switch matrix are connected through the plurality of switch devices with coaxial cables. Two of the plurality of switch devices are disposed such that their terminal sides face each other. The rest of the plurality of switch devices are disposed in a vicinity of space between the terminal sides of the two switch devices, which face each other.

Description

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram showing a structure of a switch matrix according to an embodiment of the present invention;

FIG. 2 is a perspective view showing an appearance of an SPDT switch;

FIG. 3 is a perspective view showing an appearance of an SP6T switch;

FIG. 4 is a perspective view showing an internal structure of a switch matrix;

FIG. 5 is a bottom view showing a structure of the switch matrix from which coaxial cables are removed;

FIG. 6 is a perspective view showing a mounting part of an SP6T switch;

FIG. 7 is a perspective view showing an appearance of a rack that accommodates four SPDT switches;

FIG. 8 is a perspective view showing an appearance of a rack that accommodates three SPDT switches;

FIG. 9 is a sectional view showing the switch matrix taken along line A-A of FIG. 5;

FIG. 10 is a sectional view showing the switch matrix taken along line B-B of FIG. 5;

FIG. 11 is a schematic diagram showing a structure of a switch matrix according to another embodiment of the present invention;

FIG. 12 is a schematic diagram showing a structure of a switch matrix according to another embodiment of the present invention;

FIG. 13 is a schematic diagram showing a structure of a switch matrix according to another embodiment of the present invention;

FIG. 14 is a schematic diagram showing a structure of a switch matrix according to another embodiment of the present invention; and

FIG. 15 is a schematic diagram showing a structure of a switch matrix according to another embodiment of the present invention.

Claims

1. A switch matrix, comprising: a plurality of switch devices each of which has switch terminals, an input side and an output side of the switch matrix being connected through the plurality of switch devices with coaxial cables,wherein two of the plurality of switch devices are disposed such that their terminal sides face each other, andwherein the rest of the plurality of switch devices are disposed in a vicinity of space between the terminal sides of the two switch devices, which face each other.

2. The switch matrix as set forth in claim 1, wherein the two switch devices are disposed such their terminal sides contact a virtual circle, andwherein at least a part of the rest of the plurality of switch devices is disposed such that its terminal side contacts the virtual circle.

3. The switch matrix as set forth in claim 1, wherein at least a part of the rest of the plurality of switch devices is disposed such that its terminal side contacts a virtual circle whose center matches a center of a line which connects centers of the terminal sides of the two switch devices, which face each other, the virtual circle being placed on a plane perpendicular to the line.

4. The switch matrix as set forth in claim 1, wherein the two switch devices are multi-contact switch devices having three or more selectable contacts each, andwherein the rest of the plurality of switch devices are two-contact switch devices having two selectable contacts each.

5. The switch matrix as set forth in claim 4, wherein the multi-contact switch devices are disposed on the input side, andwherein the two-contact switch devices are disposed on the output side.

6. The switch matrix as set forth in claim 5, wherein the two-contact switch devices are collectively disposed at two positions, andwherein the two multi-contact switch devices on the input side and the two-contact switch devices at two positions are alternately disposed.

7. The switch matrix as set forth in claim 1, wherein the switch matrix has two inputs and five outputs.

8. The switch matrix as set forth in claim 4, further comprising: two-contact switch devices disposed at an upstream stage of the two multi-contact switch devices,wherein the switch matrix has three or more inputs.

9. A switch matrix, comprising: a plurality of switch devices each of which has switch terminals, an input side and an output side of the switch matrix being connected through the plurality of switch devices with coaxial cables,wherein at least three of the plurality of switch devices are disposed such that their terminal sides contact a virtual circle.

10. A switch matrix, comprising: a plurality of switch devices each of which has switch terminals, an input side and an output side of the switch matrix being connected through the plurality of switch devices with coaxial cables,wherein at least three of the plurality of switch devices are disposed such that their terminal sides are placed on different sides of a virtual polyhedron.

11. The switch matrix as set forth in claim 1, wherein the switch devices are high frequency type coaxial switches.