POWER LINE CARRIER-USE MODEM COUPLING CIRCUIT

Title:

POWER LINE CARRIER-USE MODEM COUPLING CIRCUIT

Document Type and Number:

WIPO Patent Application WO/2004/084430

Kind Code:

A1

Abstract:

A modem coupling circuit comprising a transformer (1) having a core (1a) forming a gap, primary windings (N1a, N1b) for providing to this core (1a) bifilar windings connected to power lines (L1, L2) as a one-layer structure, a secondary winding (N2) forming a sandwich structure along with this one-layer-structure primary winding and connected to a transmission circuit (2), and a secondary winding (N3) connected to a reception circuit (3), a coupling capacitor (C1) connected to the middle point of primary windings at terminals not connected to the power line (L1, L2) sides, current limiting resistors (R1a, R1b) connected to primary windings (N1a, N1b) of a bifilar winding structure, drive resistors (R2a, R2b) connected to a transmitting secondary winding (N2), and terminal resistors (R3a, R3b) connected to a receiving secondary winding (N3).

More Like This:

JP2005150198	TRANSFORMER FOR COMMUNICATION
WO/2004/049675	ARRANGEMENT OF AN INDUCTIVE COUPLER FOR POWER LINE COMMUNICATIONS
WO/2004/042922	SYSTEM FOR GENERATING HIGH-POWER PULSE

Inventors:

Kaku, Takashi c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Tsuda, Fumishiro c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Tojo, Toshiro c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Obikawa, Toyomi c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Sato, Toshiya c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Yamauchi, Hideaki c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Kunii, Masahiko c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)

Application Number:

PCT/JP2004/003661

Publication Date:

September 30, 2004

Filing Date:

March 18, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HONDA ELECTRON CO., LTD. (14-1, Kyobashi 2-chome Chuo-ku, Tokyo, 104-0031, JP)
NEC TOKIN CORPORATION (7-1 Koriyama 6-chome, Taihaku-ku Sendai-shi, Miyagi, 982-8510, JP)
Kaku, Takashi c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Tsuda, Fumishiro c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Tojo, Toshiro c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Obikawa, Toyomi c/o Honda Electron Co. Ltd. (14-1, Kyobashi 2-chom, Chuo-ku Tokyo, 104-0031, JP)
Sato, Toshiya c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Yamauchi, Hideaki c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)
Kunii, Masahiko c/o NEC Tokin Corporation (7-1 Koriyama 6-chome, Taihaku-k, Sendai-shi Miyagi, 982-8510, JP)

International Classes:

H01F19/08; H04B3/56; (IPC1-7): H04B3/56; H01F27/28; H01F27/24; H01F30/00

Attorney, Agent or Firm:

Manabe, Kiyoshi (Shinwa Bldg, 9-11 Toranomon 2-chom, Minato-ku Tokyo, 105-0001, JP)

Download PDF:

View/Download PDF PDF Help

Previous Patent: RADIO COMMUNICATION TERMINAL

Next Patent: SIGNAL PATH SELECTION IN A DIVERSITY ANTENNA SYSTEM