Patents Represented by Attorney Anne F. Barschall
  • Patent number: 5157343
    Abstract: Electronic receive arrangement for receiving a modulated carrier signal, which arrangement comprises a mixer/demodulator driven with the carrier frequency fc, at least one adder included in a closed signal loop, a low-pass filter, and a pulse shaper constituted by a sigma-delta (one-bit) signal converter and driven with the sampling frequency fs and also comprises a digital decimation filter. The signal loop includes the mixer/demodulator so that the modulated carrier signal is applied to the adder and the output signal of the adder is applied to the mixer/demodulator. The signal loop also comprises a second mixer driven with frequency fc, and the frequencies fs and fc present a common multiple.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: October 20, 1992
    Assignee: U.S. Philips Corporation
    Inventor: Johannes O. Voorman