Filter calibration
    1.
    发明申请
    Filter calibration 有权
    过滤器校准

    公开(公告)号:US20060267698A1

    公开(公告)日:2006-11-30

    申请号:US11439732

    申请日:2006-05-23

    IPC分类号: H03L7/00

    摘要: Calibrating a filter is disclosed. The filter is reconfigured as an oscillator during calibration. Switches and/or other implementations of reconfiguring a filter are used to reconfigure the negative feedback loop of the filter to a positive feedback loop. The oscillation parameters are then measured to adjust the components of the filter to achieve an oscillation that corresponds to a desired filter characteristic.

    摘要翻译: 公开了校准过滤器。 滤波器在校准期间被重新配置为振荡器。 重新配置滤波器的开关和/或其他实施方式用于将滤波器的负反馈环路重新配置为正反馈环路。 然后测量振荡参数以调整滤波器的分量以实现对应于期望的滤波器特性的振荡。

    Integrated power amplifier
    2.
    发明授权
    Integrated power amplifier 有权
    集成功率放大器

    公开(公告)号:US07349679B1

    公开(公告)日:2008-03-25

    申请号:US10881428

    申请日:2004-06-30

    IPC分类号: H04B1/16

    摘要: A power amplifier develops a modulated high power signal by summing the outputs of multiple voltage controlled oscillators. A phase control circuit synchronizes the phase relationship of multiple voltage controlled oscillators. The voltage control oscillators provide amplitude modulation of an output signal of the voltage controlled oscillator by adjusting transconductance of amplification devices of the voltage controlled oscillator. Another embodiment of the power amplifier provides buffer circuits at the outputs of the voltage controlled oscillators. The gain or delay of the buffer circuits is varied to provide amplitude modulation of the power amplifier.

    摘要翻译: 功率放大器通过对多个压控振荡器的输出相加来产生调制的高功率信号。 相位控制电路同步多个压控振荡器的相位关系。 电压控制振荡器通过调节压控振荡器的放大装置的跨导来提供压控振荡器的输出信号的幅度调制。 功率放大器的另一实施例在压控振荡器的输出处提供缓冲电路。 改变缓冲电路的增益或延迟以提供功率放大器的幅度调制。