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Patent Searching and Data


Title:
SIGNAL TRANSMISSION SYSTEM, SIGNAL OUTPUT CIRCUIT BOARD, SIGNAL RECEIVING CIRCUIT BOARD, SIGNAL OUTPUT METHOD AND SIGNAL RECEIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2006/075516
Kind Code:
A1
Abstract:
A signal transmission system is provided with a driver for outputting a signal; a transmission line for transmitting the signal; an inserting type attenuator inserted into the transmission line in series for attenuating a low frequency signal more than a high frequency signal; and an added type attenuator connected between the transmission line and a reference potential for attenuating the low frequency signal more than the high frequency signal. A synthesized impedance made by the driver, the inserting type attenuator and the added type attenuator is matched with the impedance of the transmission line.

Inventors:
NAKAMURA TAKAYUKI (JP)
SEKINO TAKASHI (JP)
Application Number:
PCT/JP2005/023824
Publication Date:
July 20, 2006
Filing Date:
December 26, 2005
Export Citation:
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Assignee:
ADVANTEST CORP (JP)
NAKAMURA TAKAYUKI (JP)
SEKINO TAKASHI (JP)
International Classes:
G01R31/319; G01R31/28; H03H7/38; H04B3/02
Foreign References:
JPH0194277A1989-04-12
JPH0643580U1994-06-10
JPH038781U1991-01-28
JPH05142301A1993-06-08
JPH04294287A1992-10-19
JPH08288881A1996-11-01
JPS49130164A1974-12-13
JPH05312910A1993-11-26
Other References:
See also references of EP 1837669A4
Attorney, Agent or Firm:
Ryuka, Akihiro (22-1 Nishi-Shinjuku 6-chome, Shinjuku-k, Tokyo ., JP)
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