Spread spectrum linearization for digitizing receivers

Details Spread spectrum linearization for digitizing receivers Spread spectrum linearization for digitizing receivers

1996-02-05

1999-03-09

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375285, H04B 1500

Patent

active

058810919

ABSTRACT:
Second order distortion products in a digital receiver front end are converted into broadband noise. An illustrative embodiment includes a noise generator, first and second combiners, and a non-linear device (e.g., an analog-to-digital converter). An input signal is combined with the noise signal by the first combiner, and the combined signal is applied to the non-linear device. The output signal from this device is applied to the second combiner. The second combiner is also driven with a time-delayed version of the noise signal, and performs a reconstructive multiplication, synchronously recovering the desired output signal. Even-order distortion products introduced by the non-linear device persist only as a low level of wideband noise in the final output signal.

REFERENCES:
patent: 4649549 (1987-03-01), Halpern et al.
patent: 5161044 (1992-11-01), Nazarathy et al.
patent: 5243622 (1993-09-01), Lux et al.
patent: 5357541 (1994-10-01), Cowart
patent: 5386198 (1995-01-01), Ripstrand et al.
patent: 5463357 (1995-10-01), Hobden
patent: 5629703 (1997-05-01), Lewallen
patent: 5659622 (1997-08-01), Ashley

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