Title:
SWITCH CIRCUIT, FILTER CIRCUIT AND TESTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2007/129583
Kind Code:
A1
Abstract:
A switch circuit is provided for switching to output an input signal or not. The switch circuit is provided with a transmission path for transmitting the input signal from the input port to the output port of the switch circuit; a first semiconductor switch arranged on the transmission path for switching to transmit the input signal or not; a second semiconductor switch, which opens when the first semiconductor switch is short-circuited and short-circuits when the first semiconductor switch is opened so as to drop to the ground potential a high-frequency signal leaked to the transmission path between the first semiconductor switch and the output port; and a voltage control section for giving potential difference to both ports of the second semiconductor switch when the second semiconductor switch is opened.
Inventors:
KIMURA HIROKI (JP)
MAEDA CHISATO (JP)
MAEDA CHISATO (JP)
Application Number:
PCT/JP2007/058983
Publication Date:
November 15, 2007
Filing Date:
April 25, 2007
Export Citation:
Assignee:
ADVANTEST CORP (JP)
KIMURA HIROKI (JP)
MAEDA CHISATO (JP)
KIMURA HIROKI (JP)
MAEDA CHISATO (JP)
International Classes:
H03K17/00; G01R31/316; H03K17/06
Foreign References:
| JPH0832431A | 1996-02-02 | |||
| JPH06334463A | 1994-12-02 | |||
| JPH08293776A | 1996-11-05 | |||
| JP2006511179A | 2006-03-30 | |||
| JPH10336000A | 1998-12-18 |
Attorney, Agent or Firm:
RYUKA, Akihiro (22-1 Nishi-Shinjuku 6-chome, Shinjuku-k, Tokyo 05, JP)
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