Patents by Inventor Takaai Makita

Takaai Makita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive array device, wireless base station and cellular telephone
    Publication number: 20030096638
    Abstract: Memory (237) stores relative correction values that indicate the differences of transfer characteristics between a) a radio unit made up of transmission circuit (211) and reception circuit (212), and b) a radio unit made up of transmission circuit (221) and reception circuit (222). Correction control unit (239), by means of phase shifter (240) and amplifier (241), uses the relative correction values to correct transmission signals. In similar fashion, the adaptive array apparatus and the radio base station perform corrections in order that identical array antenna patterns are formed at times of reception and transmission.
    Type: Application
    Filed: October 2, 2002
    Publication date: May 22, 2003
    Inventors: Yoshiharu Doi, Seigo Nakao, Takaai Makita