HIGH FREQUENCY POWER AMPLIFYING CIRCUIT, AND MOBILE COMMUNICATION APPARATUS USING IT

A high frequency power amplifying circuit where a first amplifying element and a second amplifying element of the same structure as the above first amplifying element and being reduced to 1/M in element size are used, the above first amplifying element and the second amplifying element are supplied...

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Bibliographic Details
Main Authors NUNOGAWA, YASUHIRO, ADACHI, TETSUAKI
Format Patent
LanguageEnglish
French
Japanese
Published 10.06.1999
Edition6
Subjects
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Summary:A high frequency power amplifying circuit where a first amplifying element and a second amplifying element of the same structure as the above first amplifying element and being reduced to 1/M in element size are used, the above first amplifying element and the second amplifying element are supplied with the same bias voltage from a power control circuit, and the power output of the above first amplifying element is judged based on the output current ouputted from the output terminal of the above second amplifying element. L'invention concerne un circuit d'amplification de puissance haute fréquence, dans lequel on utilise un premier élément d'amplification et un second élément d'amplification ayant la même structure que le premier élément d'amplification et dont la taille est réduite à 1/M. Le premier élément d'amplification et le second élément d'amplification sont alimentés par la même tension de polarisation à partir d'un circuit de commande de puissance et la sortie de puissance du premier élément d'amplification est évaluée sur la base du courant de sortie de la borne de sortie du second élément d'amplification.
Bibliography:Application Number: WO1997JP04356