Radio communication apparatus having a high receiving...

H - Electricity – 04 – B

Patent

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Details

H04B 1/26 (2006.01) H04B 1/18 (2006.01) H04B 1/40 (2006.01) H04B 1/44 (2006.01)

Patent

CA 2208382

An intermediate frequency section converts the transmission signal into an intermediate frequency signal. An intermediate filter section filters the intermediate frequency signal into a filtered signal. A demodulating section demodulates the filtered signal into a demodulated signal. The intermediate frequency filter section comprises an intermediate frequency filter for filtering the intermediater frequency signal into the filtered signal and a matching section for matching each of the intermediate frequency section and the demodulating section to the intermediate frequency filter. The matching section has a variable circuit constant. A connecting section connects a transmission section to the reception section. A supplying section supplies the transmission section to an input signal to make the transmission section produce the transmission signal in accodance with the input signal. The supplying section adjusts the variable circuit constant in accordance with the input signal and the demodulated signal.

Une section de fréquences intermédiaires transforme le signal de transmission en un signal de fréquence intermédiaire; une section de filtrage intermédiaire filtre le signal de fréquence intermédiaire pour produire un signal filtré; une section de démodulation démodule le signal filtré pour créer un signal démodulé. La section de filtrage de fréquences intermédiaires comprend un filtre intermédiaire pour le filtrage du signal de fréquence intermédiaire en vue de produire un signal filtré, et une section d'adaptation pour adapter la section de fréquences intermédaires et la section de démodulation pour que ces dernières correspondent au filtre de fréquences intermédiaires. La section d'adaptation comprend une constante de circuit variable. Une section de connexion fait la connexion entre une section de transmission et une section de réception; une section d'alimentation alimente la section de transmission d'un signal d'entrée afin que la section de transmission produise le signal de transmission en fonction du signal d'entrée; la section d'alimentation règle la constante de circuit variable selon le signal d'entrée et le signal démodulé.

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