Increasing sensitivity of radio receiver

H - Electricity – 04 – B

Patent

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Details

H04B 1/06 (2006.01) H04B 17/00 (2006.01) H04B 1/10 (2006.01) H04B 1/16 (2006.01)

Patent

CA 2687220

A direct-conversion radio receiver is provided. The receiver includes a first measurement unit (120) configured to measure a signal level of a received signal at an input of the receiver. The receiver also includes a gain controller (122) configured to stepwise adjust at least a front-end gainand a baseband gain of the receiver when the signal level of the received signal at the input of the receiver exceeds a given sensitivity level, and adjust the front-end gain with at least one further gain step when the input signal level is below the given sensitivity level.

L'invention concerne un récepteur radio à conversion directe. Le récepteur comprend une première unité de mesure (120) conçue pour mesurer un niveau de signal d'un signal reçu à une entrée du récepteur. Le récepteur comprend aussi un dispositif de commande de gain (122) conçu pour ajuster par échelon au moins un gain d'extrémité frontale et un gain en bande de base du récepteur lorsque le niveau de signal du signal reçu à l'entrée du récepteur dépasse un niveau de sensibilité donné et pour ajuster le gain d'extrémité frontale avec au moins un autre échelon de gain lorsque le niveau de signal d'entrée est inférieur au niveau de sensibilité donné.

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