Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Patent
1998-04-27
2000-07-11
JeanPierre, Peguy
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
341155, H03M 300
Patent
active
060879696
ABSTRACT:
A sigma-delta modulator (10) and a method for digitizing an analog signal. The sigma-delta modulator includes at least one switch (16) for altering the order of the sigma-delta modulator (10). The order of the sigma-delta modulator (10) is changed based on the communication protocol of the received analog signal. More particularly, the order of the sigma-delta modulator (10) is increased for communication protocols having wide information-bandwidths. Alternatively, the order of the sigma-delta modulator (10) is decreased for communication protocols having narrow information-bandwidths.
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"Quadrature Bandpass .DELTA..SIGMA. Modulation for Digital Radio" by Stephen A. Jantzi, Member, IEEE, Kenneth W. Martin, Fellow, IEEE, and Adel S. Sedra, Fellow, IEEE, IEEE Journal of Solid-State Circuits, vol. 32, No. 12, Dec. 1997.
Garrity Douglas A.
Stockstad Troy Lynn
Jean-Pierre Peguy
Martinez Anthony M.
Motorola Inc.
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