Patents by Inventor Michael Joseph MCCULLAGH

Michael Joseph MCCULLAGH 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).

  • Duplexing apparatus, transceiver apparatus and method of compensating for signal leakage
    Patent number: 10659098
    Abstract: A duplexing apparatus comprises a hybrid junction module having an antenna port, a transmit port, a receive port and a balance port. The apparatus also comprises a feedforward circuit arranged to be responsive in respect of a first transmit band of frequencies and a second transmit band of frequencies, the feedforward circuit having an input operably coupled to the transmit port of the hybrid junction module and an output. The hybrid junction is arranged to isolate substantially the receive port from the transmit port in respect of the first transmit band of frequencies and substantially not to isolate the receive port from the transmit port in respect of the second transmit band of frequencies. The feedforward circuit is also arranged to favour propagation therethrough of signal frequencies in the second transmit band over signal frequencies in the first transmit band, thereby rendering a compensation signal at the output.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: May 19, 2020
    Assignee: u-blox AG
    Inventor: Michael Joseph McCullagh
  • DUPLEXING APPARATUS, TRANSCEIVER APPARATUS AND METHOD OF COMPENSATING FOR SIGNAL LEAKAGE
    Publication number: 20190215028
    Abstract: A duplexing apparatus comprises a hybrid junction module having an antenna port, a transmit port, a receive port and a balance port. The apparatus also comprises a feedforward circuit arranged to be responsive in respect of a first transmit band of frequencies and a second transmit band of frequencies, the feedforward circuit having an input operably coupled to the transmit port of the hybrid junction module and an output. The hybrid junction is arranged to isolate substantially the receive port from the transmit port in respect of the first transmit band of frequencies and substantially not to isolate the receive port from the transmit port in respect of the second transmit band of frequencies. The feedforward circuit is also arranged to favour propagation therethrough of signal frequencies in the second transmit band over signal frequencies in the first transmit band, thereby rendering a compensation signal at the output.
    Type: Application
    Filed: May 20, 2016
    Publication date: July 11, 2019
    Inventor: Michael Joseph MCCULLAGH