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Patent Searching and Data


Title:
VARIABLE REACTANCE DEVICE, OSCILLATOR, AND RADAR DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/057717
Kind Code:
A1
Abstract:
There is provided a rotor (2) having a deformed shape in the circumferential direction and arranged in the proximity of a substrate (11) consisting of a coplanar line and a micro-strip line. The rotor (2) includes a conductor and a dielectric body. Accordingly, by rotating the rotor (2), it is possible to change the position and amount of the capacitance generated between the transmission line and the rotor (2) and at the side of the rotor (2), thereby changing the reactance viewed from the side of the transmission line. Thus, when handling a high-frequency signal such as a millimetric-wave band, it is difficult to change the reactance by an electric method but it is possible to realize a reactance change by a mechanical method and obtain an excellent linearity and frequency characteristic at a low cost.

Inventors:
Kato, Takatoshi c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Nishiyama, Taiyo c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Ishikawa, Yohei c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Tanizaki, Toru c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Application Number:
PCT/JP2004/015393
Publication Date:
June 23, 2005
Filing Date:
October 19, 2004
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-shi, Kyoto 55, 61785, JP)
Kato, Takatoshi c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Nishiyama, Taiyo c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Ishikawa, Yohei c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
Tanizaki, Toru c/o Murata Manufacturing Co. Ltd. (10-1, Higashikotari 1-chom, Nagaokakyo-shi Kyoto 55, 61785, JP)
International Classes:
H01P1/06; H03B5/18; (IPC1-7): H01P1/00; G01S13/34; H01P5/04; H03B5/18; H03C3/12
Foreign References:
JPH07303003A
JPH09246846A
JPS51120651A
JP3045923B2
JPH09211112A
JP3256389B22002-02-12
JPS6213002U
JPS56150104U
JPH0496101U
JPS6272204A
JP2002122661A
JP2001514392A
Attorney, Agent or Firm:
Komori, Hisao (1-4-34, Noninbashi Chuo-k, Osaka-shi Osaka 11, 54000, JP)
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