ROUTING AND SHIELDING OF SIGNAL LINES TO IMPROVE ISOLATION

    公开(公告)号:EP3367576A1

    公开(公告)日:2018-08-29

    申请号:EP18166592.8

    申请日:2014-04-01

    IPC分类号: H04B1/00 H05K1/02

    摘要: Techniques for routing and shielding signal lines to improve isolation between the signal lines are disclosed. In an exemplary design, an apparatus includes first, second, and third signal lines and a switch. The first, second, and third signal lines are configurable to carry first, second, and third signals, respectively. The switch is coupled between the second signal line and AC ground and is closed when the second signal line is not carrying the second signal. The second signal line isolates the first and third signal lines when the switch is closed. Adjacent signal lines are not active at the same time. A signal line may include positive and negative signal lines, which may have at least one cross over in order to cancel coupling between the positive and negative signal lines.

    CARRIER AGGREGATION AMPLIFIER WITH DUAL GAIN CONTROL
    5.
    发明公开
    CARRIER AGGREGATION AMPLIFIER WITH DUAL GAIN CONTROL 审中-公开
    麻醉品麻醉大师VERSTÄRKUNGSREGELUNGTRÄGERAGGREGATIONSVERSTÄRKERMIT DOPPELTERVERSTÄRKUNGSREGELUNG

    公开(公告)号:EP3146638A1

    公开(公告)日:2017-03-29

    申请号:EP15726786.5

    申请日:2015-05-12

    IPC分类号: H04B1/00 H03F1/22 H03G1/00

    摘要: An apparatus includes a first amplification stage configured to amplify a first carrier signal and a second amplification stage configured to amplify a second carrier signal. The first amplification stage is direct-current (DC) coupled to the second amplification stage. First circuitry is coupled to the first amplification stage and configured to control a first gain of the first amplification stage. The first circuitry includes a first gain control transistor configured to selectively divert a first bleed current from a first output of the first amplification stage. Second circuitry is coupled to the second amplification stage and configured to control a second gain of the second amplification stage independently of the first gain. The second circuitry includes a second gain control transistor configured to selectively divert a second bleed current from a second output of the second amplification stage.

    摘要翻译: 一种装置包括被配置为放大第一载波信号的第一放大级和被配置为放大第二载波信号的第二放大级。 第一放大级是耦合到第二放大级的直流(DC)。 第一电路耦合到第一放大级并且被配置为控制第一放大级的第一增益。 第一电路包括第一增益控制晶体管,其被配置为选择性地转移来自第一放大级的第一输出的第一泄放电流。 第二电路耦合到第二放大级并且被配置为独立于第一增益来控制第二放大级的第二增益。 第二电路包括第二增益控制晶体管,其被配置为选择性地转移来自第二放大级的第二输出的第二放电电流。