A receiver architecture with digitally generated...

H - Electricity – 04 – B

Patent

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H04B 1/30 (2006.01)

Patent

CA 2583654

A receiver can be configured to include an RF front end that is configured to downconvert a received signal to a baseband signal or a low Intermediate Frequency (IF) signal. The receiver can downconvert the desired signal from an RF frequency in the presence of numerous interference sources to a baseband or low IF signal for filtering and channel selection. The filtered baseband or low IF signal can be converted to a digital representation. The digital representation of the signal can be upconverted in the digital domain to a programmable IF frequency. The digital IF signal can be converted to an analog IF signal that can be processed by legacy hardware.

L'invention concerne un récepteur que l'on peut configurer de façon à inclure un frontal RF conçu pour convertir en l'abaissant un signal reçu en un signal de bande de base ou un signal de fréquence intermédiaire (IF) basse. Le récepteur peut convertir en l'abaissant le signal recherché d'une fréquence RF en présence de plusieurs sources d'interférence en un signal de bande de base ou signal de IF basse pour filtrage et sélection de canal. Le signal de bande de base ou de IF basse peut être converti en représentation numérique. On peut monter en fréquence la représentation numérique du signal dans le domaine numérique en une fréquence IF programmable. Le signal IF numérique peut être converti en signal IF analogique que l'on peut traiter par un matériel classique.

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