Patents by Inventor Wang-Chang Gu

Wang-Chang Gu 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: 20060067254
    Abstract: A surface acoustic wave (SAW) triplexer receives radio frequency signals in three bands and provides output signal components for PCS, GPS, and cellular signal processing ports. The triplexer includes low pass filter and a high pass network operating with an antenna terminal for reception and separation of an incoming signal in a low and high frequency bands, and a SAW filter connected to the input terminal for reception and separation of the incoming signal within a frequency band located between that of the low and the high bands. A low insertion loss bandpass filter is provided by the SAW filter having a transducer and reflectors fabricated on a piezoelectric substrate.
    Type: Application
    Filed: September 27, 2004
    Publication date: March 30, 2006
    Applicant: Sawtek, Inc.
    Inventors: Riad Mahbub, Berry Leonard, Wang-Chang Gu, Rushad Mehershahi, Benjamin Abbott
  • Patent number: 6459344
    Abstract: A microelectromechanical system (MEMS) switch assembly (10) and a method of forming the MEMBS switch assembly (10) is provided that includes a switching member (12) having a first portion (34) that is at least partially formed with a first material having a first dielectric constant and a second portion (36) that is at least partially formed with a second material having a second dielectric constant. Furthermore, the switching member (12) further includes a first lead (14) spaced apart from a second lead (16) for contacting the switching member (12). In operation, the switching member (12) is configured for movement such that the first portion (34) and second portion (36) of the switching member (12) can provide variable electrical connections between the first lead (14) and second lead (16).
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: October 1, 2002
    Assignee: Motorola, Inc.
    Inventors: Anthony M. Pavio, Jenn-Hwa Huang, Wang-Chang Gu
  • Publication number: 20020130732
    Abstract: A microelectromechanical system (MEMS) switch assembly (10) and a method of forming the MEMBS switch assembly (10) is provided that includes a switching member (12) having a first portion (34) that is at least partially formed with a first material having a first dielectric constant and a second portion (36) that is at least partially formed with a second material having a second dielectric constant. Furthermore, the switching member (12) further includes a first lead (14) spaced apart from a second lead (16) for contacting the switching member (12). In operation, the switching member (12) is configured for movement such that the first portion (34) and second portion (36) of the switching member (12) can provide variable electrical connections between the first lead (14) and second lead (16).
    Type: Application
    Filed: March 19, 2001
    Publication date: September 19, 2002
    Applicant: Motorola, Inc.
    Inventors: Anthony M. Pavio, Jenn-Hwa Huang, Wang-Chang Gu