Title:
複数の変調搬送周波数を使用した、様々な線路を介した高周波ネットワーク多重化通信
Document Type and Number:
Japanese Patent JP2005516523
Kind Code:
A
Abstract:
An improved apparatus for high frequency multiplexed electrical line communication for cable TV, telephone, internet, security and other control applications over the mid and low voltage power lines and directly through the transformers includes a transmitter, a receiver, a modem, a multiplexer and multiple couplers at each of two or more locations along an electrical line. The couplers have capacitive circuits serially connected with an air-core or dielectric-core transformer. The capacitive circuits resonate with the transformer at a preselected frequency. The coupler eliminates noise and is matched to the characteristic impedance of the line at the preselected frequency, which linearizes communication on the line and allows high speed data and voice communication over long distances.
Inventors:
Charles Abraham
Application Number:
JP2003565063A
Publication Date:
June 02, 2005
Filing Date:
January 31, 2003
Export Citation:
Assignee:
Satius, Inc.
International Classes:
H04B3/54; H01F19/00; H04B3/56; H04L25/02; H04M11/04; (IPC1-7): H04B3/54
Attorney, Agent or Firm:
Seiji Okuda