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Patent Searching and Data


Title:
IMPEDANCE MATCHING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/103134
Kind Code:
A1
Abstract:
[Problem] To provide an impedance matching circuit capable of being used for a high-power application of several tens of watts or more, and capable of higher-speed impedance matching. [Solution] An impedance matching circuit provided with a variable frequency alternating-current power source is connected to a desired object load, the frequency of the variable frequency alternating-current power source is changed, the trajectory of an output impedance is represented in a spiral form on a Smith chart, and the output impedance is either matched to an impedance being the complex conjugate of the impedance of the object load, or is brought into a desired numerical range. Furthermore, a plurality of frequency ranges in which the output impedance is either matched to the impedance being the complex conjugate of the impedance of the object load, or is brought into the desired numerical range are caused to exist. It is preferable that the impedance being the complex conjugate of the impedance of the object load be plotted in a predetermined place within the whole range on the Smith chart, and that the frequency range in which the frequency of the variable frequency alternating-current power source is changed be a desired frequency range.

Inventors:
SUZUKI Asako (Ltd. 8-22 Shinden 3-chome, Adachi-k, Tokyo 11, 〒1238511, JP)
TANI Tohru (Setatsukinowa-cho Otsu-sh, Shiga 92, 〒5202192, JP)
NAKA Shigeyuki (Setatsukinowa-cho Otsu-sh, Shiga 92, 〒5202192, JP)
OHIRA Takashi (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 〒4418580, JP)
MIYAZAKI Motoaki (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 〒4418580, JP)
TSUKAMOTO Satoshi (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 〒4418580, JP)
SAKAI Naoki (1-1 Hibarigaoka, Tempaku-cho, Toyohashi-sh, Aichi 80, 〒4418580, JP)
Application Number:
JP2018/043337
Publication Date:
May 31, 2019
Filing Date:
November 26, 2018
Export Citation:
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Assignee:
ADAMANT NAMIKI PRECISION JEWEL CO., LTD. (8-22, Shinden 3-chome Adachi-k, Tokyo 11, 〒1238511, JP)
NATIONAL UNIVERSITY CORPORATION SHIGA UNIVERSITY OF MEDICAL SCIENCE (Setatsukinowa-cho, Otsu-shi Shiga, 92, 〒5202192, JP)
NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY (1-1 Hibarigaoka, Tempaku-cho Toyohashi-sh, Aichi 80, 〒4418580, JP)
International Classes:
H03H7/40; H03H7/38
Foreign References:
JP6157036B12017-07-05
JP2006310245A2006-11-09
JP2014072806A2014-04-21
Attorney, Agent or Firm:
ADAMANT NAMIKI PRECISION JEWEL CO., LTD. (8-22, Shinden 3-chome Adachi-k, Tokyo 11, 〒1238511, JP)
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