Patents by Inventor John Michael Hooper

John Michael Hooper 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).

  • RF switchable balun
    Patent number: 8368481
    Abstract: A handheld communication device having an RF front end module has a switchable balun comprising a primary winding having a first two port winding and a second two port winding where a low noise amplifier is operatively coupled to the first and second two port windings and a power amplifier is operatively coupled to the first and second two port windings. A secondary winding is operatively coupled to an antenna, and a transceiver is operatively coupled to the low noise amplifier and the power amplifier. When the switchable balun is in a receive state, the antenna is operatively coupled to the transceiver through the low noise amplifier, and when the switchable balun is in a transmit state, the antenna is operatively coupled to the transceiver through the power amplifier. The ratio of the primary winding to the secondary winding is greater than a one-to-one ratio.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: February 5, 2013
    Assignee: Microsemi Corporation
    Inventors: Yalin Jin, Vikram Krishnamurthy, John Michael Hooper
  • RF SWITCHABLE BALUN
    Publication number: 20110128088
    Abstract: A handheld communication device having an RF front end module has a switchable balun comprising a primary winding having a first two port winding and a second two port winding where a low noise amplifier is operatively coupled to the first and second two port windings and a power amplifier is operatively coupled to the first and second two port windings. A secondary winding is operatively coupled to an antenna, and a transceiver is operatively coupled to the low noise amplifier and the power amplifier. When the switchable balun is in a receive state, the antenna is operatively coupled to the transceiver through the low noise amplifier, and when the switchable balun is in a transmit state, the antenna is operatively coupled to the transceiver through the power amplifier.
    Type: Application
    Filed: October 13, 2010
    Publication date: June 2, 2011
    Inventors: Yalin Jin, Vikram Krishnamurthy, John Michael Hooper