Patents by Inventor Hideki Muto

Hideki Muto 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).

  • High-frequency switch
    Patent number: 6448868
    Abstract: A high-frequency switch having a greatly reduced occurrence of high harmonic signals includes first and second switches, and each of these two switches includes two diodes and two transmission lines. Besides, one of the two voltage control terminals is connected, via a resistor, to the intermediate connection point between the anode of one of the two diodes of the first switch and one of the two transmission lines of the first switch. The other of the voltage control terminals is connected, via another resistor, to the intermediate connection point between the anode of one of the two diodes of the second switch and one of the two transmission lines of the second switch.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: September 10, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mitsuhide Kato, Hideki Muto
  • Composite high frequency component and mobile communication apparatus incorporating the same
    Patent number: 6445262
    Abstract: A composite high frequency component and a mobile communication apparatus incorporating the same which needs no matching circuits and can easily be miniaturized. The composite high frequency component is constituted of a diplexer, high frequency switches, high frequency filters, and surface acoustic wave filters. The diplexer is formed by first inductors and first capacitors. The high frequency switches are formed by diodes, second inductors, and second capacitors. The high frequency filters are formed by third inductors and third capacitors.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: September 3, 2002
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Koji Tanaka, Koji Furutani, Takahiro Watanabe, Hideki Muto, Takanori Uejima, Norio Nakajima
  • High-frequency switch
    Publication number: 20010026198
    Abstract: A high-frequency switch having a greatly reduced occurrence of high harmonic signals includes first and second switches, and each of these two switches includes two diodes and two transmission lines. Besides, one of the two voltage control terminals is connected, via a resistor, to the intermediate connection point between the anode of one of the two diodes of the first switch and one of the two transmission lines of the first switch. The other of the voltage control terminals is connected, via another resistor, to the intermediate connection point between the anode of one of the two diodes of the second switch and one of the two transmission lines of the second switch.
    Type: Application
    Filed: January 17, 2001
    Publication date: October 4, 2001
    Applicant: Murata Manufacturing Co., Ltd
    Inventors: Mitsuhide Kato, Hideki Muto