AMPLIFIER FOR RADIO TRANSMISSION
    1.
    发明授权
    AMPLIFIER FOR RADIO TRANSMISSION 有权
    放大器无线电发射

    公开(公告)号:EP0977354B1

    公开(公告)日:2010-11-24

    申请号:EP99905284.8

    申请日:1999-02-19

    摘要: A radio transmission amplification apparatus includes input and output terminals between which are connected a gain control amplifier (11), a preamplifier (12) coupled with the output from the gain control amplifier, and a final amplifier (13) coupled with the output from the preamplifier. The range of the transmission output level of the amplification apparatus is divided into low, medium and high regions. For the low level region, power switches (28 and 29) cut off power supply to the preamplifier and the final amplifier while the output of the gain control amplifier (11) is connected to the terminal (14) through switches (15, 18 and 19). For the medium level region, the power switch (28) is ON with the power switch (29) OFF, and the switch (15) is connected with the preamplifier while the preamplifier output is connected to the terminal (14) through the switches (21 and 19). For the high level region, the power switches (28 and 29) are ON, the switches (15 and 16) are connected with the preamplifier and final amplifier, respectively, while the output of the final amplifier is connected to the terminal (14) through the switch (19).

    AMPLIFIER FOR RADIO TRANSMISSION
    2.
    发明公开
    AMPLIFIER FOR RADIO TRANSMISSION 有权
    VERSTÄRKERZURRADIOÜBERTRAGUNG

    公开(公告)号:EP0977354A1

    公开(公告)日:2000-02-02

    申请号:EP99905284.8

    申请日:1999-02-19

    IPC分类号: H03G3/20 H04B1/04

    摘要: In a radio transmission amplifier unit which has between input and output terminals a gain-controlled amplifier 11, a pre-amplifier 12 connected to the output thereof and a main amplifier 13 supplied with the output therefrom, the range of the transmitting power level is divided into small, medium and large regions. In the small transmitting power level region, the power supply to the pre- and main amplifiers is cut off by power-supply switches 28 and 29 and the output of the gain-controlled amplifier 11 is connected to a terminal 14 via switches 15, 18 and 19; in the medium transmitting power level region, the power-supply switch 28 is turned ON and the switch 29 OFF to connect the switch 15 to the pre-amplifier and the output of the pre-amplifier is connected to the terminal 14 via switches 21 and 19; and in the large transmitting power level region, the power-supply switches 28 and 29 are turned ON to connect the switch 15 to the pre-amplifier, a switch 16 is connected to the main amplifier, and the output of the main amplifier is connected to the terminal 14 via the switch 19.

    摘要翻译: 在具有输入和输出端之间的无线电发射放大器单元中,增益控制放大器11,连接到其输出端的前置放大器12和从其输出的主放大器13,分配发射功率电平的范围 进入中小区域。 在小发射功率电平区域中,通过电源开关28和29将前置放大器和主放大器的电源切断,并且增益控制放大器11的输出经由开关15,18连接到端子14 和19; 在介质发射功率电平区域中,电源开关28导通,开关29断开,以将开关15连接到前置放大器,并且前置放大器的输出经由开关21和 19; 并且在大的发射功率电平区域中,电源开关28和29导通以将开关15连接到前置放大器,开关16连接到主放大器,并且主放大器的输出被连接 通过开关19连接到终端14.