Multiple mode direct conversion receiver

Details Multiple mode direct conversion receiver Multiple mode direct conversion receiver

H - Electricity

04

B

H04B 1/16 (2006.01) H04B 1/30 (2006.01) H04L 27/38 (2006.01)

Patent

CA 2295292

A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

L'invention porte sur un récepteur à mode multiple comprenant une conversion directe (traitement de signaux reçus à l'aide de fréquences intermédiaires dans la même plage de fréquences que la largeur de spectre du signal reçu) plutôt qu'un circuit superhétérodyne, ce qui permet de réutiliser, plutôt que de reproduire pour chaque bande, des composants matériels du récepteur. L'invention porte également sur différentes réalisations dans lesquelles sont réutilisés des filtres passe-bas, des mélangeurs, des générateurs en quadrature, des oscillateurs et des amplificateurs.

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