System and method for distributing broadband communication signals over power lines

• US 7,079,012 B2
• Filed: 01/21/2004
• Issued: 07/18/2006
• Est. Priority Date: 01/21/2004
• Status: Active Grant

• Current Assignee: Fox Entertainment Group, Inc. (The Walt Disney Company)
• Original Assignee: Evans Wetmore
• Inventors: Wetmore, Evans
• Primary Examiner(s): TWEEL JR, JOHN ALEXANDER
• Application Number:
  US10/763,054
• Publication Number:
  US 20050157442A1
• Time in Patent Office: 909 Days
• Field of Search: 340/310.01, 340/310.05, 340/310.06, 340/310.07, 340/854.8, 340/870.31, 340/310.13, 340/310.17, 375/258, 375/259, 333/131, 333/177
• US Class Current: 307/3
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 2203/5466 using three phases conductors
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

The present invention is directed to a method for decreasing high frequency (HF) radiation emission in a power line. The method involves transmitting a utility power signal over the power line and transmitting a high frequency communication signal over the power line so as to provide a combined utility and high frequency signal over the power line. A plurality of inductors are provided, disposed along the power line.

Claims

1. A method for decreasing high frequency (HF) radiation emission from a power line spanning a plurality of utility poles or towers, said method comprising the steps of:

transmitting a utility power signal over said power line;

transmitting a high frequency communication signal over said power line so as to provide a combined utility and high frequency signal over said power line; and

providing a plurality of inductors disposed along a span of said power line, between each of said poles or towers, such that said high frequency radiation emission from said power line generated by said high frequency communication signal is reduced along said span of said power line where said inductors are maintained.

2. The method in accordance with claim 1 further comprising the step of increasing a voltage level of said combined signal corresponding to an increased impedance in said power line as a result of said step of providing a plurality of inductors.

3. The method in accordance with claim 2, wherein said step of providing a plurality of inductors further comprises the step of providing said plurality of inductors at regular intervals.

4. The method in accordance with claim 2, wherein said step of providing a plurality of inductors further comprises the step of providing said plurality of inductors at irregular intervals.

5. The method in accordance with claim 2, wherein said step of providing a plurality of inductors further comprises the step of providing a plurality of clamped inductors.

6. The method in accordance with claim 2, wherein said step of providing a plurality of inductors further comprises the step of providing a plurality of series inserted inductors.

7. A system for decreasing high frequency (HF) radiation emission from a power line spanning a plurality of utility poles or towers, comprising:

a first transmitter configured to transmit a utility power signal over said power line;

a second transmitter configured to transmit a high frequency communication signal over said power line so as to provide a combined utility and high frequency signal over said power line; and

a plurality of inductors disposed along said power line , between each of said poles or towers, such that said high frequency radiation emission from said power line generated by said high frequency communication signal is reduced along said span of said power line where said inductors are maintained.

8. The system in accordance with claim 7 further comprising means for increasing a voltage level of said combined signal corresponding to an increased impedance in said power line as a result of said plurality of inductors.

9. The system in accordance with claim 7, wherein said plurality of inductors are located at regular intervals.

10. The system in accordance with claim 7, said plurality of inductors are located at irregular intervals.

11. The system in accordance with claim 7, wherein at least one of said inductors is a clamped inductor.

12. The system in accordance with claim 7, wherein at least one of said plurality of inductors is a series inserted inductor.