Patents by Inventor Ikuroh Ichitsubo

Ikuroh Ichitsubo 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).

  • Publication number: 20070152903
    Abstract: Systems and methods are disclosed to transmit and receive radio frequency (RF) signals by providing a plurality of high gain, highly directional antennas on a multi-layer printed circuit board; using a processor to gate RF signals from each antenna and to select an antenna transmission pattern based on antenna turned on or the combination of a number of antennas turned on, among others.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Teng-Chi Lin, Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Publication number: 20070115054
    Abstract: A radio frequency (RF) module provides first and second power amplifiers configured to produce first and second amplified RF signals at first and second output RF terminals, respectively; and first and second arrays of pads positioned opposite each other, the first array including the first output RF terminal and the second array including the second output RF terminal. The module also provides two reserve terminals that can be connected to capacitors, inductors, sensors for RF linearity, or can be left unconnected.
    Type: Application
    Filed: January 19, 2007
    Publication date: May 24, 2007
    Inventors: Ikuroh Ichitsubo, Kanya Kubota, Masaya Kuwano, Koshiro Matsumoto
  • Patent number: 7221225
    Abstract: A power amplifier module for amplifying radio frequency signals includes first and second radio frequency power amplifiers each including one or more semiconductor transistors, adapted to receive an input radio frequency signal and a processed power-sensing control signal, and to output an amplified radio frequency signal; first and second power-sensing circuits each coupled to said first and second radio frequency power amplifiers and adapted to receive each amplified radio frequency signal and to output the power-sensing control signal; and control logic that receives and processes the power-sensing control signals, and outputs a processed power-sensing control signal in response to each quality or magnitude of each amplified radio frequency signal.
    Type: Grant
    Filed: July 2, 2005
    Date of Patent: May 22, 2007
    Assignee: Micro-Mobio
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Patent number: 7202735
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal. The module has first and second rows of pins oppositely positioned on the module and coupled to the first and second power amplifiers and first and second bias circuits.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: April 10, 2007
    Assignee: Micro-Mobio
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Patent number: 7164314
    Abstract: A power amplifier module for amplifying radio frequency signals includes a radio frequency power amplifier including one or more semiconductor transistors, adapted to receive an input radio frequency signal and power control signals, and to output an amplified radio frequency signal. The power amplifier module is integrated with input and output impedance matching networks and a power sensor that is adapted to receive the amplified radio frequency signal and to output a signal indicating the power output level of the power amplifier module. The power amplifier module also includes control logic in accordance to at least one of the qualities and the power level of the amplified radio frequency signal.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: January 16, 2007
    Assignee: Micro Morio Corporation
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Publication number: 20060290421
    Abstract: A radio frequency (RF) module includes a first substrate adapted to receive passive circuits; and a second substrate adapted to receive active circuits, the first and second substrates electrically coupled through pads positioned on opposing surfaces of the first and second substrate.
    Type: Application
    Filed: August 30, 2006
    Publication date: December 28, 2006
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang, Zlatko Filipvic
  • Publication number: 20060290423
    Abstract: A system of compatible modules includes a radio frequency (RF) module with a power amplifier configured to produce an amplified RF signal at an output RF terminal; and a first row of pads and a first column of pads intersecting at a corner pad of the module, and wherein the corner pad is coupled to the output RF terminal.
    Type: Application
    Filed: August 30, 2006
    Publication date: December 28, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota, Masaya Kuwano, Koshiro Matsumoto
  • Patent number: 7148752
    Abstract: A power amplifier module for amplifying radio frequency signals includes first, second, third and fourth corner ground pads positioned at each corner of the power amplifier module; one or more radio frequency input pads positioned between the first and second corner ground pads; one or more radio frequency output pads positioned between the third and fourth corner ground pads; and one or more power amplifier circuits centrally positioned on the power amplifier module.
    Type: Grant
    Filed: July 2, 2005
    Date of Patent: December 12, 2006
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Patent number: 7123088
    Abstract: A power amplifier module for amplifying radio frequency signals includes a radio frequency power amplifier including one or more semiconductor transistors, adapted to receive an input radio frequency signal and power control signals, and to output an amplified radio frequency signal. The power amplifier module is integrated with input and output impedance matching networks and a power sensor that is adapted to receive the amplified radio frequency signal and to output a signal indicating the power output level of the power amplifier module. The power amplifier module also includes control logic in accordance to at least one of the qualities and the power level of the amplified radio frequency signal.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: October 17, 2006
    Assignee: Micro-Mobio
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Patent number: 7119614
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: October 10, 2006
    Assignee: Micro-Mobio
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Publication number: 20060202757
    Abstract: An amplifier circuit for amplifying radio frequency signals includes a radio frequency power amplifier to receive an input radio frequency signal and to output an amplified radio frequency signal; one or more sensors coupled to the radio frequency power amplifier to provide a closed-loop feedback signal; and a power sensor coupled to the amplified radio frequency signal.
    Type: Application
    Filed: May 12, 2006
    Publication date: September 14, 2006
    Inventors: Ikuroh Ichitsubo, Weiping Wang
  • Patent number: 7091775
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Grant
    Filed: July 2, 2005
    Date of Patent: August 15, 2006
    Assignee: Micro Mobio Corporation
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Patent number: 7084702
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: August 1, 2006
    Assignee: Micro Mobio Corp.
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Publication number: 20060158253
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal. The module has first and second rows of pins oppositely positioned on the module and coupled to the first and second power amplifiers and first and second bias circuits.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Publication number: 20060160505
    Abstract: A substantially rectangular shaped power amplifier module includes a power amplifier for amplifying radio frequency signals, a bias control terminal and a power sensing terminal disposed on the same side of the power amplifier module, an input terminal and a ground terminal disposed on the same side of the power amplifier module, and an output terminal and one or more power supply terminals disposed on the same side of the power amplifier module.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota, Wen Liu
  • Publication number: 20060160504
    Abstract: A substantially rectangular shaped power amplifier module includes a power amplifier for amplifying radio frequency signals, a bias control terminal and a power sensing terminal disposed on the same side of the power amplifier module, an input terminal and a ground terminal disposed on the same side of the power amplifier module, and an output terminal and one or more power supply terminals disposed on the same side of the power amplifier module.
    Type: Application
    Filed: June 14, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota, Wen Liu
  • Publication number: 20060158252
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Application
    Filed: July 2, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Publication number: 20060160503
    Abstract: A power amplifier can amplify an input radio frequency signal to produce an output radio frequency signal in response to a bias control signal. A programmable digital control unit produces the bias control signal and to transmit the bias control signal to the power amplifier.
    Type: Application
    Filed: April 20, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Guan-Wu Wang, Weiping Wang
  • Publication number: 20060158250
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Application
    Filed: January 19, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota
  • Publication number: 20060158251
    Abstract: A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in a second frequency band in response to a second bias control signal. A first bias control circuit produces the first bias control signal and a second bias control circuit produces the second bias control signal in response to step gain signals received at a step gain terminal.
    Type: Application
    Filed: May 11, 2005
    Publication date: July 20, 2006
    Inventors: Ikuroh Ichitsubo, Kanya Kubota