Patents by Inventor Moni G. Mathew

Moni G. Mathew 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 optical transponder
    Patent number: 7373087
    Abstract: Systems and methods for optical communications. In one implementation, a communications device is provided. The communications device includes an Optical domain Adaptive Dispersion Compensation Module (OADCM); an Electrical domain Adaptive Distortion Compensation Module (EADCM); and a controller coupled to, and operable to selectively control, both the OADCM and the EADCM.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: May 13, 2008
    Assignee: Oplink Communications, Inc.
    Inventors: Feng Shi, Genzao Zhang, Xiaoli Fu, Jinghui Li, Tongqing Wang, John Ralston, Moni G. Mathew
  • Microwave transmission device having gyromagnetic materials having different saturation magnetizations
    Patent number: 4496915
    Abstract: A multi-port microwave device, such as an isolator or circulator, for transmission of electromagnetic energy in TEM mode non-reciprocally between ports. The device exhibits low insertion loss, high return loss (low VSWR) and high isolation and is operable over a 100 percent or more bandwidth. The microwave device includes a composite ferrite body between a circuit conductor and a ground plane. The composite ferrite body includes at least two different types of ferrite material where each one is selected to provide different frequency characteristics over the frequency pass band of the device.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: January 29, 1985
    Assignee: TRW Inc.
    Inventors: Moni G. Mathew, Thomas J. Weisz
  • Microwave transmission devices comprising gyromagnetic material having smoothly varying saturation magnetization
    Patent number: 4390853
    Abstract: A multi-port microwave device, such as an isolator or circulator, for transmission of electromagnetic energy in TEM and higher order modes non-reciprocally between parts. The device exhibits low insertion loss, high return loss (low VSWR) and high isolation and is operable over a 100 percent or more bandwidth. The microwave device includes a composite ferrite body between a circuit conductor and a ground plane. The composite ferrite body includes ferrite material having a saturation magnetization gradient for providing different frequency characteristics over the frequency pass band of the device.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: June 28, 1983
    Assignee: TRW Inc.
    Inventors: Moni G. Mathew, Thomas J. Weisz