Alcatel

Arnaud Maecker

Fuji Yang

Pierre Andre Genest

Corinne Berland

Eric Dussauby

The invention relates to an electronic circuit for solving problems of phase linearity involved with transmitting a signal through a digital-to-analog converter module. By connecting the following in cascade: an interpolator; a sigma-delta modulator; a digital-to-analog converter block made up of a 1-bit digital-to-analog converter and a multiband finite impulse response filter; and an analog filter, it is possible to filter out quantization noise while providing a linear response at the output from the circuit.

Electronic digital-to-analog converter circuit for a baseband transmission system

A transmit-receive system includes a phase-locked loop and a translation frequency loop. To bring about frequency hops, the frequencies in the two loops are varied with large increments in opposite directions. It is shown that the noise caused by the frequency division in the loops is thereby reduced.

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Asnieres, France

Arnaud Maecker