H - Electricity – 03 – L
Patent
H - Electricity
03
L
H03L 1/00 (2006.01) H03K 3/011 (2006.01) H03K 5/14 (2006.01) H03L 7/06 (2006.01) H03M 1/08 (2006.01) H04B 15/00 (2006.01)
Patent
CA 2582350
A direct digital synthesizer (DDS) (300) that uses a system for reducing spurious emissions in a digital-to-time converter (DTC) (317). The DDS (300) includes one or more dither sources (307) and a random access memory (RAM) (305). The RAM (305) utilizes a look-up table for storing delay error values by using an output of the look-up table which is combined with the dither source (307) to compensate unequal unit delay values in the DTC (317).
L'invention concerne un synthétiseur numérique direct (DDS) (300) utilisant un système destiné à réduire les émissions parasites dans un convertisseur numérique-temps (DTC) (317). Le DDS (300) comprend une ou plusieurs sources de tremblement (307) et une mémoire vive (RAM) (305). La RAM (305) utilise une table de recherche pour stocker des valeurs d'erreur de retard par utilisation d'une sortie de la table de recherche combinée à la source de tremblement (307) en vue d'une compensation des valeurs de retard unitaires inégales dans le DTC (317).
Gradishar Thomas L.
Stengel Robert E.
Gowling Lafleur Henderson Llp
Motorola Inc.
Motorola Solutions Inc.
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