Wideband frequency signal digitizer and method

H - Electricity – 04 – L

Patent

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H04L 27/00 (2006.01) H03M 1/12 (2006.01) H04B 1/26 (2006.01) H04B 1/28 (2006.01) H04J 1/05 (2006.01) H04L 1/06 (2006.01) H04L 1/22 (2006.01) H04Q 7/22 (2006.01) H03D 3/00 (2006.01) H04B 1/00 (2006.01) H04Q 7/30 (2006.01)

Patent

CA 2181807

A wideband frequency digitizer (10) and method for digitizing multiple bands of a wideband frequency signal. The digitizer (10) and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter (36). Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.

Un procédé et un appareil (10) de numérisation de fréquences à large bande permettent de numériser des bandes multiples d'un signal de fréquence à large bande. Le procédé et l'appareil (10) permettent de positionner de manière optimale un segment (402) du signal de fréquence à large bande dans une bande de Nyquist d'un convertisseur analogique-numérique (36). Les autres segments (402) du signal de fréquence à large bande sont étroitement positionnés par rapport au premier segment, de sorte que tout le signal de fréquence à large bande (400) est aisément numérisé par un ou plusieurs convertisseurs analogiques-numériques (36). Les signaux parasites indésirables sont en même temps réduits ou éliminés.

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