Patent Number: 6,310,908

Title: Digital to analogue converter implementation

Abstract: Current telecommunications device transmission stages require a significant number of analogue (DAC) components. The present invention provides a digital to analogue converter implementation for coupling to the digital signal processing (DSP) stage of the device and comprises a DAC and means to nullify the output of the DAC over part of the DSP data output period to produce a series of pulses corresponding to this data. The pulses are bandpass filtered to produce an analogue output signal at an intermediate frequency.

Inventors: Reed; Christopher John (Potters Bar, GB), Gale; Simon (Bishop's Stortford, GB)

Assignee: Nortel Networks Limited

International Classification: H03M 1/66 (20060101); H04L 025/00 ()

Expiration Date: 10/30/2018