Apparatus and method for shaping and power controlling a...

Details Apparatus and method for shaping and power controlling a... Apparatus and method for shaping and power controlling a...

H - Electricity

04

B

H04B 1/04 (2006.01) H03G 3/30 (2006.01) H04B 7/005 (2006.01)

Patent

CA 2173608

A transmitter architecture is disclosed which offers a new combination of signal shaping and power control which optimizes transmitter noise figure performance. The disclosed apparatus and method is implemented by separating the shaping element (303) from the power control elements (406, 412, 418) in frequency. Placing the shaping element (303) at a fixed intermediate frequency (IF) allows for the use of readily available, temperature stable shaping elements while distributing the power control elements (406, 412, 418) at radio frequency (RF) facilitates optimization of noise figure performance in the transmitter (200).

Architecture d'émetteur offrant une nouvelle combinaison de mise en forme et de commande de la puissance d'un signal qui optimise la performance du facteur de bruit de l'émetteur. L'appareil et le procédé de cette invention comprennent la séparation en fréquence de l'élément (303) de mise en forme par rapport aux éléments (406, 412, 418) de commande de la puissance. Le fait de mettre l'élément (303) de mise en forme à une fréquence intermédiaire (FI) fixe permet d'utiliser des éléments de mise en forme thermostables généralement disponibles, alors que le fait de distribuer les éléments (406, 412, 418) de commande de la puissance à une radiofréquence (RF) facilite l'optimisation de la performance du facteur de bruit de l'émetteur (200).

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