Title:
NOISE FILTER AND SENSOR CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2005/045367
Kind Code:
A1
Abstract:
A noise filter capable of realizing an electromagnetic interference tolerance in a desired frequency range in a high frequency band. A noise filter (4) and a sensor circuit (1) using the noise filter. The noise filter (4) is inserted in a path electrically connecting output terminals (2a,2b) of a sensor (2) to a detector circuit (5) that detects an output signal of the sensor (2). The noise filter (4) comprises first and second inductance elements (7,8) located, as at least one impedance element, on the sensor side; and at least one capacitance element (9) connected between the impedance element and the detector circuit (5).
Inventors:
MATSUBARA MAKOTO (JP)
TOMINAGA TORU (JP)
SAKURAI YUKICHI (JP)
OOI TAKAAKI (JP)
TOMINAGA TORU (JP)
SAKURAI YUKICHI (JP)
OOI TAKAAKI (JP)
Application Number:
PCT/JP2004/014609
Publication Date:
May 19, 2005
Filing Date:
October 04, 2004
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
MATSUBARA MAKOTO (JP)
TOMINAGA TORU (JP)
SAKURAI YUKICHI (JP)
OOI TAKAAKI (JP)
MATSUBARA MAKOTO (JP)
TOMINAGA TORU (JP)
SAKURAI YUKICHI (JP)
OOI TAKAAKI (JP)
International Classes:
G01C19/00; H03H1/00; H03H7/09; (IPC1-7): G01C19/00; H03H7/09
Foreign References:
| JPS5476638U | 1979-05-31 | |||
| JP2000151327A | 2000-05-30 | |||
| JPS51108601A | 1976-09-27 | |||
| JPH11307392A | 1999-11-05 |
Attorney, Agent or Firm:
Miyazaki, Chikara Metsugi Makoto . (5-4 Tanimachi 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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