Yamaji Takafumi
   Department   SOJO UNIVERSITY  Department of Computer and Information Sciences, FACULTY OF COMPUTER AND INFORMATIONSCIENCES
     /(DC)Division of Applied Information Sciences, Graduate School of Engineering
     /Division of Applied Information Sciences, Graduate School of Engineering
   Position  
Country of acquisition Foreign country (米国)
Patent No. USP 7,471,939
Date of Grant 2008/12/30
Inventor Yamaji; Takafumi (Yokohama, JP), Okuni; Hidenori (Kawasaki, JP)
Patent Title Multiplier and radio communication apparatus using the same
Details A multiplier includes a first input terminal which receives a modulated signal, three second input terminals which receive first, second, and third local signals respectively, the first, second, and third local signals having a phase difference of 120.degree. from one another, a multiplication unit configured to multiply the modulated signal by each of the first, second, and third local signals, and output first, second, and third multiplied output signals, and three output terminals from which the first, second, and third multiplied output signals are derived, respectively.