Communication device with configurable sigma-delta modulator

Details Communication device with configurable sigma-delta modulator Communication device with configurable sigma-delta modulator

2007-06-05

2007-06-05

Corrielus, Jean B. (Department: 2611)

Pulse or digital communications

Transmitters

Angle modulation

C375S298000, C375S225000, C375S240200, C375S243000, C375S316000

Reexamination Certificate

active

10311911

ABSTRACT:
In up-to date communication devices an intermediate frequency signal is generated at first in a digital way and than is converted to an analogue signal by a digital-to-analogue converter (10). In order to offer a greater flexibility in choosing a particular digital-to-analogue converter (10) the invention proposes to use sigma-delta modulators (8), the output bit width (n) of which is arranged to be configurable. The advantage of providing sigma-delta modulators with a configurable output bit width is that by this the output bit width of the interpolation filters can be easily adapted to the input bit width of a chosen digital-to-analogue converter without the need to change the internal design of a baseband processing circuit.

REFERENCES:
patent: 6075820 (2000-06-01), Comino et al.
patent: 6744825 (2004-06-01), Rimstad et al.

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