Patents Examined by Barbara Summonns
  • Multiplexer for cellular telephone
    Patent number: 6396365
    Abstract: A multiplexer circuit adapted to receive standard cellular telephone signals and PCS signals without user intervention comprises two filter circuits. The first filter circuit presents a high impedance to signals outside the standard cellular frequency range from one antenna and the second circuit presents a high impedance to signals outside the higher PCS frequency range from a second antenna. A cell phone adapted to receive both frequency ranges will automatically detect the appropriate signal.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: May 28, 2002
    Assignee: R.A. Miller Industries, Inc.
    Inventors: Paul E. Miller, Glen J. Seward, Paul A. Bogdans