Common transmit module for a programmable digital radio

H - Electricity – 04 – B

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H04B 1/04 (2006.01) G01S 1/04 (2006.01) G01S 7/282 (2006.01) H03D 7/16 (2006.01) H04B 1/40 (2006.01) G01S 13/74 (2006.01)

Patent

CA 2230553

A common transmit module of a programmable digital radio. The common transmit module has a digital submodule which receives a bit stream and produces a modulated intermediate frequency signal, and an analog submodule which receives the modulated intermediate frequency signal and converts the modulated intermediate frequency signal to a frequency corresponding to a specific type of radio function. The digital submodule includes (a) a sequential/parallel instruction set processor for signal processing and control; (b) a reconfigurable format unit which is reconfigurable to produce output signals for transmitting different types of radio functions, and (c) a modulator which receives the output signals of the reconfigurable format unit and produces the modulated oscillation signal. The analog submodule includes (a) a tunable local oscillator that produces a tunable local oscillation signal; (b) fixed local oscillators that produce fixed local oscillation signals; and (c) a mixing unit that receives the modulated intermediate frequency signal, the tunable local oscillation signal and the fixed local oscillation signals, selectively mixes the fixed local oscillation signals with the modulated oscillation signal to produce non-final intermediate frequency signals, and mixes a non-final intermediate frequency signal with the tunable local oscillation signal to produce a final converted signal for transmission at the frequency corresponding to the specific type of radio function.

Module de transmission d'une radio numérique programmable, possédant un sous-module numérique qui reçoit un train de bits et produit un signal de fréquence intermédiaire modulé, et un sous-module analogique qui reçoit le signal de fréquence intermédiaire modulé et convertit ledit signal en une fréquence correspondant à un type spécifique de fonction radio. Ledit sous-module numérique comporte (a) un processeur de jeux d'instructions séquentiel/parallèle pour le traitement et la commande des signaux, (b) une unité de format reconfigurable pour produire des signaux de sortie destinés à transmettre différents types de fonctions radio, et (c) un modulateur qui reçoit les signaux de sortie de l'unité de format reconfigurable et produit le signal d'oscillation modulé. Le sous-module analogique comporte (a) un oscillateur local accordable qui produit un signal d'oscillation locale accordable, (b) des oscillateurs locaux fixes qui produisent des signaux d'oscillation locale fixes et (c) une unité de mixage qui reçoit le signal de fréquence intermédiaire modulé, le signal d'oscillation locale accordable et les signaux d'oscillation locale fixes, mélange sélectivement les signaux d'oscillation locale modulés avec le signal d'oscillation modulé pour produire des signaux de fréquence intermédiaire non finaux, et mélange un signal de fréquence intermédiaire non final avec le signal d'oscillation locale accordable pour produire un signal converti final destiné à être transmis à la fréquence correspondant au type spécifique de fonction radio.

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