SIGNAL SPLITTER FOR USE IN MOCA/CATV NETWORKS

• US 20120081190A1
• Filed: 05/20/2010
• Published: 04/05/2012
• Est. Priority Date: 05/22/2009
• Status: Active Grant

• Current Assignee: Technetix Group Limited
• Original Assignee: Technetix Group Limited
• Inventors: Rijssemus, Martien
• Granted Patent: US 8,810,334 B2
• Time in Patent Office: Days
• US Class Current: 333/25
• CPC Class Codes: H03H 7/482 particularly adapted for use in common antenna systems
• CPC Class Codes: H04N 7/104 Switchers or splitters

Abstract

There is provided a splitter circuit for use with a CATV network comprising a signal input in communication with a balun to supply two signal outputs, a resistor connected in parallel between the outputs, and capacitive, inductive, and resistive elements associated with the resistor, thereby to give an insertion loss in to out in the range of 3 to 10 dB.

Claims

1-9. -9. (canceled)

10. A splitter circuit for use with a CATV network, the splitter circuit comprising:

a signal input;

a balun in communication with the signal input to supply two signal outputs;

a resistor connected in parallel between the two signal outputs; and

capacitive, inductive, and resistive elements associated with the resistor, thereby to give an insertion loss in to out in the range of 3 to 10 dB for signal frequencies in the range 1125 MHz to 1525 MHz.

11. The splitter circuit of claim 10, further comprising:

a first capacitive element connected in parallel with the resistor;

a first inductive element in series with the resistor;

a second inductive element in parallel with the resistor;

a second capacitive element; and

a resistive element connected in series with the second capacitive element.

12. The splitter circuit of claim 11, wherein the first inductive element has an inductance in the range 10 nH to 40 nH, and wherein the second inductive element has an inductance in the range 30 nH to 90 nH.

13. The splitter circuit of claim 12, wherein the first capacitive element has a capacitance in the range 0.8 pF to 2.2 pF, and wherein the second capacitive element has a capacitance in the range 0.3 pF to 1.0 pF.

14. The splitter circuit of claim 13, wherein the resistive element has a resistance in the range 5 to 22 Ohm.

15. The splitter circuit of claim 14, wherein the splitter circuit has an insertion loss in to out in the range 3 to 6 dB for signal frequencies in the range 5 MHz to 1000 MHz.

16. The splitter circuit of claim 15, wherein the splitter circuit has an isolation out to out of <

17 dB for frequencies in the range 1125 MHz to 1525 MHz.

17. A signal splitter incorporating at least one splitter circuit according to claim 16.

18. A cable television network incorporating at least one signal splitter according to claim 17.

19. The splitter circuit of claim 11, wherein the first capacitive element has a capacitance in the range 0.8 pF to 2.2 pF, and wherein the second capacitive element has a capacitance in the range 0.3 pF to 1.0 pF.

20. The splitter circuit of claim 11, wherein the resistive element has a resistance in the range 5 to 22 Ohm.

21. The splitter circuit of claim 10, wherein the splitter circuit has an insertion loss in to out in the range 3 to 6 dB for signal frequencies in the range 5 MHz to 1000 MHz.

22. The splitter circuit of claim 10, wherein the splitter circuit has an isolation out to out of <

17 dB for frequencies in the range 1125 MHz to 1525 MHz.

23. A signal splitter incorporating at least one splitter circuit according to claim 10.

24. A cable television network incorporating at least one signal splitter according to claim 23.

25. A cable television network incorporating at least one splitter circuit according to claim 10.

26. A splitter circuit for use with a CATV network, the splitter circuit comprising:

a signal input;

a balun in communication with the signal input to supply two signal outputs;

a resistor connected in parallel between the two signal outputs; and

means for giving an insertion loss in to out in the range of 3 to 10 dB for signal frequencies in the range 1125 MHz to 1525 MHz.

27. The splitter circuit of claim 26, wherein the means for giving includes means for giving an insertion loss in to out in the range 3 to 6 dB for signal frequencies in the range 5 MHz to 1000 MHz.

28. The splitter circuit of claim 26, wherein the means for giving includes means for giving an isolation out to out of <

17 dB for frequencies in the range 1125 MHz to 1525 MHz.

29. A signal splitter incorporating at least one splitter circuit according to claim 26.