H - Electricity – 03 – G
Patent
H - Electricity
03
G
H03G 3/20 (2006.01) H04B 1/10 (2006.01)
Patent
CA 2339655
The present invention is a novel and improved AGC circuit which is generically configurable to accommodate a variety of AGC amplifier configurations to enhance IP3 performance and reduce required amplifier current, while providing a received power estimate which remains valid regardless of how the gain or attenuation is distributed among the various amplifiers. A generic control circuit maintains this power estimate in a single overall gain amplification value by distributing gain to at least two amplifier stages in response to that value. By programming or hard coding a few key parameters, a generic control circuit can control a wide variety of amplifier configurations.
L'invention concerne un circuit automatique de commande de gain perfectionné qui peut généralement adopter différentes configurations afin d'améliorer la performance IP3 et de réduire le besoin en courant d'amplificateur tout en fournissant une estimation de puissance reçue qui soit valable quelle que soit la façon dont le gain ou l'atténuation sont distribués entre les différents amplificateurs. Un circuit de commande générique conserve cette estimation de puissance dans une seule valeur générale d'amplification de gain en distribuant le gain à au moins deux étages d'amplificateur en réponse à cette valeur. Grâce à la programmation ou à l'incorporation au programme de quelques paramètres clés, un circuit de commande générique peut commander toute une gamme de configurations d'amplificateur.
Qualcomm Incorporated
Smart & Biggar
LandOfFree
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