Title:
PASSIVE INTERMODULATION DISTORTION MEASURING METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2008/029522
Kind Code:
A1
Abstract:
Reception PIM measuring methods for matching the impedances of a sample and the
measuring system have involved problems such as the limitation of the measurement
dynamic range due to the PIM produced at the terminator, the limitation of the
shape and size of the sample under measurement, and the difficulty of the independent
control of the sample shape parameter. A sample under measurement is brought
into a mismatching state, and a standing wave is produced on a transmission line
to which the sample is connected. The end of the transmission line is short-circuited
by the sample, the position of the sample is made the loop of the current standing
wave, and a test signal of high current density is applied. Then the end of the transmission
line is made open, and the system noise is calibrated. Since impedance matching
is not carried out and no terminator is used, a wide measurement dynamic range
is realized without being influenced by the PIM produced at the terminator. The
shape of the sample is much smaller than that of the sample used in conventional
measurement methods, and the shape can be freely selected. The physical properties
of a wide variety of materials such as conductive materials, insulators, and
magnetic materials are possible.
Inventors:
KUGA, Nobuhiro (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
久我 宣裕 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
YAMAMOTO, Yasuyuki (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
山本 泰之 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
久我 宣裕 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
YAMAMOTO, Yasuyuki (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
山本 泰之 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
Application Number:
JP2007/053438
Publication Date:
March 13, 2008
Filing Date:
February 23, 2007
Export Citation:
Assignee:
YOKOHAMA NATIONAL UNIVERSITY (79-1, Tokiwadai Hodogaya-ku Yokohama-sh, Kanagawa 01, 2408501, JP)
国立大学法人横浜国立大学 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 Kanagawa, 2408501, JP)
KUGA, Nobuhiro (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
久我 宣裕 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
YAMAMOTO, Yasuyuki (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
国立大学法人横浜国立大学 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 Kanagawa, 2408501, JP)
KUGA, Nobuhiro (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
久我 宣裕 (〒01 神奈川県横浜市保土ヶ谷区常盤台７９番１号 国立大学法人横浜国立大学内 Kanagawa, 2408501, JP)
YAMAMOTO, Yasuyuki (79-1 TokiwadaiHodogaya-ku, Yokohama-sh, Kanagawa 01, 2408501, JP)
International Classes:
G01N22/00; G01R23/20; H04B3/46; G01N22/00; G01R23/20; H04B3/46
Attorney, Agent or Firm:
TANI, Yoshikazu et al. (6-20, Akasaka 2-chome Minato-k, Tokyo 52, 1070052, JP)