Mini isolator

Patent metadata

Field	Value
Publication number	US-10811749-B2
Application number	US-201916523068-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Oct 9, 2015
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

An isolator includes a body including an input connector and an output connector. The isolator also includes an outer shield positioned at least partially around a portion of the body. The isolator also includes a coupling member electrically coupled to the outer shield and positioned at least partially within the outer shield. The isolator also includes a coaxial circuit positioned at least partially around a first portion of the coupling member. The isolator also includes a toroid positioned at least partially around a second portion of the coupling member. The toroid is configured to filter radio frequency (RF) signals. The first portion and the second portion are axially-adjacent to one another. The isolator also includes a conditioning circuit in communication with the input connector and the output connector. The conditioning circuit is configured to condition the RF signals communicated between the input connector and the output connector.

First claim

What is claimed is:

1. A coaxial radio frequency (RF) isolator, comprising:
a first connector configured to connect to a first device;
a conductive body comprising a second connector and a conductive outer shield, wherein the conductive body and the conductive outer shield at least partially form a first internal cavity;
a dielectric barrier positioned at least partially between the conductive body and the conductive outer shield;
a conductive coupling/filtering member positioned at least partially within the conductive outer shield, the dielectric barrier, or both, wherein the conductive coupling/filtering member at least partially forms a second internal cavity;
a thru-RF signal transmission path extending through the first internal cavity and the second internal cavity, the thru-RF signal transmission path configured to receive a RF signal from the first device and output the RF signal to a second device, wherein the RF signal is conditioned in the thru-RF signal path between the first device and the second device;
a coaxial coupling element positioned at least partially within the first internal cavity, wherein the coaxial coupling element is configured to couple the conductive body, the conductive outer shield, and the conductive filtering/coupling member; and
a magnetic toroid positioned at least partially around the conductive coupling/filtering member and coupled to the coaxial coupling element.

2. The isolator of claim 1 , further comprising a compression material configured to apply a force to the coaxial coupling element and the magnetic toroid.

3. The isolator of claim 1 , wherein the thru-RF signal transmission path comprises a RF filter device.

4. The isolator of claim 1 , wherein the coaxial coupling element comprises a DC filter device.

5. The isolator of claim 1 , wherein the magnetic toroid has an inner diameter corresponding to an outer diameter of the conductive coupling/filtering member.

6. An isolator, comprising:
a body comprising an input connector and an output connector;
an outer shield positioned at least partially around a portion of the body;
a coupling member electrically coupled to the outer shield and positioned at least partially within the outer shield;
a coaxial circuit positioned at least partially around a first portion of the coupling member;
a toroid positioned at least partially around a second portion of the coupling member, wherein the toroid is configured to filter radio frequency (RF) signals, wherein the first portion and the second portion are axially-adjacent to one another; and
a conditioning circuit in communication with the input connector and the output connector, wherein the conditioning circuit is configured to condition the RF signals communicated between the input connector and the output connector.

7. The isolator of claim 6 , further comprising a barrier positioned between the outer shield and the body.

8. The isolator of claim 6 , wherein the coaxial circuit electrically couples the coupling member and the body.

9. The isolator of claim 6 , wherein the coaxial circuit comprises:
an insulator ring comprising an inner surface and an outer surface;
a first conductor layer formed on the outer surface of the insulator ring;
a second conductor layer formed on the inner surface of the insulator ring; and
one or more electrical circuits electrically coupled between the first conductor layer and the second conductor layer.

10. The isolator of claim 9 , wherein the coaxial circuit comprises a printed circuit board.

11. The isolator of claim 9 , wherein the one or more electrical circuits comprise one or more of a capacitive circuit, an inductive circuit, a resistive circuit, or a filtering circuit.

12. The isolator of claim 6 , wherein the conditioning circuit comprises one or more of a high pass filter, a low pass filter, an amplifier, a bandpass filter, a band reject filter, or a Multimedia over Coax Alliance (MoCA) circuit.

13. The isolator of claim 6 , further comprising a second coaxial circuit surrounding a third portion of the coupling member.

14. The isolator of claim 13 , further comprising a second toroid surrounding the third portion of the coupling member.

15. The isolator of claim 14 , wherein:
the toroid is positioned at least partially between the coaxial circuit and the second coaxial circuit; and
the second coaxial circuit is positioned at least partially between the toroid and the second toroid.

16. The isolator of claim 6 , further comprising a spring or a resilient member configured to apply a force to the coupling member and the toroid.

17. An isolator comprising:
an outer shield;
an input connector;
an output connector;
a conditioning circuit configured to condition signals communicated between the input connector and the output connector;
a coupling member electrically connected to the output connector, wherein the coupling member comprises an anti-rotation feature that is configured to prevent the conditioning circuit from rotating;
a coaxial circuit configured to provide ground isolation between the input connector and the output connector; and
a compression material configured to apply an axial force to the coaxial circuit.

18. The isolator of claim 17 , further comprising a toroid positioned axially adjacent to the coaxial circuit, wherein:
the coaxial circuit is positioned at least partially around a first portion of the coupling member; and
the toroid is positioned at least partially around a second portion of the coupling member.

19. The isolator of claim 18 , wherein the coaxial circuit comprises:
an insulator ring;
a first conductor layer formed on an outer surface of the insulator ring;
a second conductor layer formed on an inner surface of the insulator ring; and
one or more electrical circuits electrically coupled between the first conductor layer and the second conductor layer.

20. The isolator of claim 19 , wherein:
the one or more electrical circuits comprise one or more of a capacitive circuit, an inductive circuit, a resistive circuit, and a filtering circuit;
the coaxial circuit is a printed circuit board; and
the first circuit comprises one or more of a high pass filter, a low pass filter, an amplifier, a bandpass filter, a band reject filter, and a Multimedia over Coax Alliance (MoCA) circuit.

21. The isolator of claim 17 , wherein the anti-rotation feature comprises a slot that is defined at least partially by:
a first axially extending surface;
a second axially extending surface that is circumferentially offset from the first axially extending surface; and
a circumferentially extending surface that extends between the first and second axially extending surfaces.

22. The isolator of claim 17 , wherein the anti-rotation feature extends from an inner radial surface of the coupling member to an outer radial surface of the coupling member.

23. The isolator of claim 17 , wherein the anti-rotation feature comprises two anti-rotation features that are circumferentially offset from one another around an axial end of the coupling member.

24. An isolator for providing ground isolation between a first cable or a first device and a second cable or a second device, the isolator comprising:
a body;
an outer shield positioned at least partially around the body;
a first connector that is configured to connect to the first cable or the first device;
a second connector configured to connect to the sec

Assignees

• Ppc Broadband Inc

Inventors

• Alkan Erdogan

Classifications

• H01R9/05 Primary

  for coaxial cables · CPC title

• H01P1/20

  Frequency-selective devices, e.g. filters · CPC title

• H01R24/525

  Outlets · CPC title

• H01P3/06

  Coaxial lines · CPC title

• H01P1/36 Primary

  Isolators · CPC title