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Class Information
Number: 340/310.15
Name: Communications: electrical > Remote control over power line > Impedance matching (e.g., y-match or delta match)
Description: Subject matter under subclass 310.11wherein a circuit is provided to make the impedance of a line terminal equal to the impedance of a circuit to which it is connected in order to achieve optimum signal transfer.


Patents under this class:
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Patent Number Title Of Patent Date Issued
7592899 Low power telemetry system and method Sep. 22, 2009
7583181 Supply line structure for supplying energy to electrical components of a motor vehicle Sep. 1, 2009
7548515 Apparatus for monitoring a network Jun. 16, 2009
7423519 Vehicular power line communication system Sep. 9, 2008
7378944 Controlling power output of a modem for power line communications May. 27, 2008
7376535 Wideband matching circuit and method of effectuating same May. 20, 2008
7315234 Load control apparatus and load control system Jan. 1, 2008
7268670 Power line communications system Sep. 11, 2007
7193506 Method and system for maximizing data throughput rate in a power line communications system by modifying payload symbol length Mar. 20, 2007
7177667 Antenna remote control apparatus of mobile communication base station system Feb. 13, 2007
7091872 Controlled power source for underground line location Aug. 15, 2006
7046124 Power line coupling device and method of using the same May. 16, 2006
7034662 Multi-function integrated automation cable system and method Apr. 25, 2006
6897764 Inductive coupling of a data signal for a power transmission cable May. 24, 2005
6870460 Input impedance arrangement for RF transponder Mar. 22, 2005
6844810 Arrangement of a data coupler for power line communications Jan. 18, 2005
6836810 Backplane system using incident waveform switching Dec. 28, 2004
6331815 Dual-frequency matching circuit Dec. 18, 2001
6218931 Home-appliance network with nodes identified by direct-sequence spreading codes Apr. 17, 2001
6157292 Power distribution grid communication system Dec. 5, 2000
6150922 Serial communication technique Nov. 21, 2000
6104707 Transformer coupler for communication over various lines Aug. 15, 2000
5949327 Coupling of telecommunications signals to a balanced power distribution network Sep. 7, 1999
5933071 Electricity distribution and/or power transmission network and filter for telecommunication over power lines Aug. 3, 1999
5929750 Transmission network and filter therefor Jul. 27, 1999
5805052 Cable system for signal transmission Sep. 8, 1998
5694108 Apparatus and methods for power network coupling Dec. 2, 1997
5635896 Locally powered control system having a remote sensing unit with a two wire connection Jun. 3, 1997
5592482 Video distribution system using in-wall wiring Jan. 7, 1997
5351272 Communications apparatus and method for transmitting and receiving multiple modulated signals over electrical lines Sep. 27, 1994
5241283 Drive amplifier for power line communications Aug. 31, 1993
5148144 Data communication network providing power and message information Sep. 15, 1992
5021779 Security device Jun. 4, 1991
4903006 Power line communication system Feb. 20, 1990
4890089 Distribution of line carrier communications Dec. 26, 1989
4885563 Power line carrier communication system Dec. 5, 1989
4864274 Remote reading thermostat Sep. 5, 1989
4766414 Power line communication interference preventing circuit Aug. 23, 1988
4724381 RF antenna for transmission line sensor Feb. 9, 1988
4675579 Coupling of carrier signal from power line Jun. 23, 1987
4636771 Power line communications terminal and interface circuit associated therewith Jan. 13, 1987
4633217 Communication apparatus Dec. 30, 1986
4623871 Receiving apparatus Nov. 18, 1986
4517548 Transmitter/receiver circuit for signal transmission over power wiring May. 14, 1985
4473816 Communications signal bypass around power line transformer Sep. 25, 1984
4473817 Coupling power line communications signals around distribution transformers Sep. 25, 1984
4471399 Power-line baseband communication system Sep. 11, 1984
4458236 Communications signal coupling around wye/delta power transformation Jul. 3, 1984
4392089 Isolator for use with frequency responsive switching circuit Jul. 5, 1983
4323882 Method of, and apparatus for, inserting carrier frequency signal information onto distribution transformer primary winding Apr. 6, 1982

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