Magnetic switching system

Patent metadata

Field	Value
Publication number	US-9287062-B2
Application number	US-201213461881-A
Country	US
Kind code	B2
Filing date	May 2, 2012
Priority date	May 2, 2012
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A switching element that is at least partially implemented in one or more printed wiring boards (PWBs). A first input and a plurality of outputs may be integrated into the PWB(s). In some embodiments, a plurality of contacts may also be integrated into the PWB(s). The switching element is selectively operable in first and second states, the first state in which the first input is coupled to a first output and the second state in which the first input is coupled to a second output.

First claim

We claim:

1. An analog switching element that is at least partially implemented in one or more printed wiring boards (PWBs), comprising:
a first input and a plurality of outputs integrated into the one or more PWBs;
a plurality of electromagnets, coupled to or comprised in at least one of the one or more PWBs; and
a plurality of floating contact bars, wherein each floating contact bar is comprised in a respective contact bar pocket internal to at least one of the PWBs, wherein each floating contact bar comprises a conductive metal or alloy that is attracted by a magnetic field;
wherein the switching element, via actuation of at least one of the floating contact bars by an externally applied magnetic field of a respective one or more electromagnets, is selectively operable in:
a first state wherein the first input is coupled to a first output of the plurality of outputs such that an analog signal input to the first input is routed to the first output; and
a second state wherein the first input is coupled to a second output of the plurality of outputs such that an analog signal input to the first input is routed to the second output.

2. The switching element of claim 1 , wherein the input and the plurality of outputs are separated from each other by a waveguide-below-cutoff frequency attenuation structure.

3. The switching element of claim 1 , wherein at least one of the plurality of floating contact bars is mounted on non-conductive hinges.

4. The switching element of claim 1 , wherein the plurality of electromagnets are integrated into the one or more PWBs.

5. The switching element of claim 1 , wherein the plurality of electromagnets are mounted to an external surface of the one or more PWBs.

6. The switching element of claim 1 , wherein the switching element is a 2×2 switching element, wherein the one or more PWBs further includes a second input, wherein the switching element is further selectively operable in:
a third state wherein the second input is coupled to the first output such that a signal input to the second input is routed to the first output, and
a fourth state wherein the second input is coupled to the second output such that a signal input to the second input is routed to the second output.

7. The switching element of claim 1 , wherein the switching element is further selectively operable in:
a third state wherein the first input is coupled to a third output of the plurality of outputs such that a signal input to the first input is routed to the third output, and
a fourth state wherein the first input is coupled to a fourth output of the plurality of outputs such that a signal input to the first input is routed to the fourth output.

8. The switching element of claim 1 , wherein the plurality of electromagnets include one or more coils.

9. The switching element of claim 1 , wherein one or more of the plurality of electromagnets include a plurality of coils, wherein the plurality of coils are disposed on a same side or opposite sides of the one or more PWBs.

10. The switching element of claim 1 , further comprising a plurality of magnetic elements disposed on a first side of the one or more PWBs, wherein each magnetic element is configured to hold a respective one of the plurality of floating contact bars in an off state.

11. The switching element of claim 1 , wherein the first input of the switching element is coupled to an output of another switching element.

12. The switching element of claim 1 , wherein each of the plurality of floating contact bars includes a precious metal plated magnetic alloy.

13. The switching element of claim 1 , wherein at least one of the floating contact bars operates as part of a microwave or radio frequency (RF) transmission line.

14. The switching element of claim 1 , wherein at least one of the contact bar pockets comprises at least one of:
a microwave or RF shielded enclosure; or
a waveguide below cutoff frequency attenuation structure.

15. The switching element of claim 1 , wherein each of the first input and the plurality of outputs comprises a precious metal stationary contact on a trace of one of the PWBs.

16. A switch system, comprising:
a plurality of switch inputs;
a plurality of switch outputs;
a switch matrix comprising a plurality of 2×2 switching elements configured to selectively couple one or more of the plurality of switch inputs to one or more of the plurality of switch outputs during use to provide one or more paths for routing signals from one or more of the switch inputs to one or more of the switch outputs during use;
wherein each of the 2×2 switching elements comprises:
a plurality of floating contact bars, a first input, a second input, a first output, a second output, and a respective one or more electromagnets;
wherein the first and second inputs and the first and second outputs are integrated into one or more printed wiring boards (PWBs),
wherein the respective one or more electromagnets are coupled to or comprised in at least one of the one or more PWBs;
wherein each of the plurality of floating contact bars is comprised in a respective contact bar pocket internal to at least one of the PWBs, wherein each floating contact bar comprises a conductive metal or alloy that is attracted by a magnetic field, and is operable to switchably couple a respective one of the first or second input to a respective one of the first or second output;

wherein the 2×2 switching element, via actuation of at least one of the floating contact bars by an externally applied magnetic field of the respective one or more electromagnets, is selectively operable in:
a first state wherein the first input is coupled to the first output such that an analog signal input to the first input is routed to the first output,
a second state wherein the first input is coupled to the second output such that an analog signal input to the first input is routed to the second output,
a third state wherein the second input is coupled to the first output such that an analog signal input to the second input is routed to the first output, and
a fourth state wherein the second input is coupled to the second output such that an analog signal input to the second input is routed to the second output.

17. The switch system of claim 16 , wherein the switch matrix comprises a cylindrical topology, a J-Type topology, a multiplexer-matrix-multiplexer topology, or a sorting topology.

18. The switch system of claim 16 , wherein each of the 2×2 switching elements further comprises a plurality of magnetic elements disposed on a first side of the one or more PWBs, wherein each magnetic element is configured to hold a respective one of the plurality of contacts in an off state.

19. The switch system of claim 16 , wherein each of the plurality of floating contact bars includes a precious metal plated magnetic alloy.

20. The switch system of claim 16 , wherein at least one of the floating contact bars operates as part of a microwave or radio frequency (RF) transmission line.

21. The switch system of claim 16 , wherein at least one of the contact bar pockets comprises at least one of:
a microwave or RF shielded enclosure; or
a waveguide below cutoff frequency attenuation structure.

22. The switch system of claim 16 , wherein each of the plurality of switch inputs and each of the plurality of switch outputs comprises a precious metal stationary contact on a trace of one of the PWBs.

23. A method for routing analog sign

Assignees

• Becker Alvin G
• Reimund James A
• Nat Instr Corp

Inventors

• Becker Alvin G
• Reimund James A

Classifications

• H04Q2213/003

  Constructional details · CPC title

• H04Q3/545

  using a stored program · CPC title

• H01P1/15 Primary

  by semiconductor devices · CPC title

• H01H2001/0073

  Solutions for avoiding the use of expensive silicon technologies in micromechanical switches · CPC title

• H04Q2213/16

  Service observation; Fault circuit; Testing · CPC title