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    • 7. 发明公开
    • 증폭회로
    • 放大器电路
    • KR1020020025701A
    • 2002-04-04
    • KR1020010057535
    • 2001-09-18
    • 가부시끼가이샤 도시바
    • 우메다도시유키오타카쇼지
    • H03F3/45
    • H03F3/45089H03D7/1433H03D7/1458H03D7/1491H03D2200/0025H03D2200/0033H03D2200/0043H03F1/3211H03F3/191H03F2203/45394H03F2203/45544H03F2203/45702H03F2203/45704H03F2203/45706
    • PURPOSE: The amplifier circuit is provided, in which a tertiary intermodulation distortion is controlled without a need to reduce output power. CONSTITUTION: The amplifier circuit comprises a differential amplifier(102), a common emitter amplifier(101), input and output terminals(Vin,Vout), and a bias controller(201). The differential amplifier(102) includes a pair of transistors. The common emitter amplifier(101) is connected in parallel to the differential amplifier(102) and configured by a pair of common-emitter configuration transistors. The input and output terminals(Vin,Vout) are common to the differential amplifier and the common emitter amplifier. The bias controller(201) is connected to the differential amplifier and the common emitter amplifier and configured to control a bias of at least one of the differential amplifier and the common emitter amplifier.
    • 目的:提供放大器电路,其中控制三次互调失真,而不需要降低输出功率。 构成:放大器电路包括差分放大器(102),公共发射极放大器(101),输入和输出端子(Vin,Vout)和偏置控制器(201)。 差分放大器(102)包括一对晶体管。 公共发射极放大器(101)并联连接到差分放大器(102)并由一对共发射极配置晶体管构成。 输入和输出端子(Vin,Vout)是差分放大器和公共发射极放大器公共的。 偏置控制器(201)连接到差分放大器和公共发射极放大器,并被配置为控制差分放大器和公共发射极放大器中的至少一个的偏置。