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    • 2. 发明授权
    • Digital power amplifier
    • 数字功率放大器
    • US08638168B1
    • 2014-01-28
    • US13490901
    • 2012-06-07
    • David M. SignoffLi LinRenaldi WinotoWayne A. LoebShu-Hsien LiaoMing He
    • David M. SignoffLi LinRenaldi WinotoWayne A. LoebShu-Hsien LiaoMing He
    • H03F3/68
    • H03F3/68H03F1/0244H03F3/2175H03F3/24
    • Systems and methods for power amplification using multiple digital amplifiers are provided. A power amplifier includes a first digital amplifier configured to process a digital input signal to generate a first analog output signal. The first analog output signal is configured to have a magnitude corresponding to amplitude information of the digital input signal. The power amplifier further includes a second digital amplifier configured to process an adjusted digital input signal to generate a second analog output signal. The second analog output signal is configured to have a magnitude corresponding to amplitude information of the adjusted digital input signal. An adjustment module configured to adjust amplitude information and phase information of the digital input signal generates the adjusted digital input signal. The digital input signal is adjusted to control a relationship between the first analog output signal and the second analog output signal.
    • 提供了使用多个数字放大器进行功率放大的系统和方法。 功率放大器包括被配置为处理数字输入信号以产生第一模拟输出信号的第一数字放大器。 第一模拟输出信号被配置为具有对应于数字输入信号的振幅信息的幅度。 功率放大器还包括第二数字放大器,其被配置为处理经调整的数字输入信号以产生第二模拟输出信号。 第二模拟输出信号被配置为具有对应于经调整的数字输入信号的振幅信息的幅度。 被配置为调整数字输入信号的幅度信息和相位信息的调整模块生成调整后的数字输入信号。 调整数字输入信号以控制第一模拟输出信号和第二模拟输出信号之间的关系。
    • 5. 发明申请
    • RF PEAK DETECTION SCHEME USING BASEBAND CIRCUITS
    • 使用基带电路的RF峰值检测方案
    • US20120142298A1
    • 2012-06-07
    • US13308325
    • 2011-11-30
    • Renaldi WinotoJinho Park
    • Renaldi WinotoJinho Park
    • H04B1/10
    • H04B17/0062H03G3/3068H04B1/10H04B17/21
    • A receiver includes an antenna configured to receive a set of RF signals, and a low-noise amplifier (LNA) coupled to the antenna and amplify the set of RF signals to generate a set of amplified signals. The receiver further includes a down-conversion mixer configured to down convert the set of amplified signals to baseband frequencies. The receiver further includes a low-pass filter configured to filter from the set of amplified signals to baseband frequencies an out-of-band signal. The receiver further includes a high-pass filter configured to reverse the filtering of the low-pass filter. The receiver further includes a peak detector configured to determine whether the LNA is operating at saturation; and an automatic-gain controller configured to decrease a gain of the LNA based on the determination of the peak detector.
    • 接收机包括被配置为接收一组RF信号的天线以及耦合到天线的低噪声放大器(LNA),并且放大该RF信号集合以产生一组放大信号。 接收机还包括一个下变频混频器,配置成将放大信号的集合下变频为基带频率。 所述接收器还包括低通滤波器,其被配置为从所述放大信号集合过滤到基带频率的带外信号。 接收机还包括被配置为反转低通滤波器的滤波的高通滤波器。 接收器还包括配置成确定LNA是否工作在饱和状态的峰值检测器; 以及自动增益控制器,被配置为基于峰值检测器的确定来降低LNA的增益。
    • 10. 发明授权
    • RF peak detection scheme using baseband circuits
    • 使用基带电路的RF峰值检测方案
    • US08688066B2
    • 2014-04-01
    • US13308325
    • 2011-11-30
    • Renaldi WinotoJinho Park
    • Renaldi WinotoJinho Park
    • H04B17/00H04B1/06H04B7/00
    • H04B17/0062H03G3/3068H04B1/10H04B17/21
    • A receiver includes an antenna configured to receive a set of RF signals, and a low-noise amplifier (LNA) coupled to the antenna and amplify the set of RF signals to generate a set of amplified signals. The receiver further includes a down-conversion mixer configured to down convert the set of amplified signals to baseband frequencies. The receiver further includes a low-pass filter configured to filter from the set of amplified signals to baseband frequencies an out-of-band signal. The receiver further includes a high-pass filter configured to reverse the filtering of the low-pass filter. The receiver further includes a peak detector configured to determine whether the LNA is operating at saturation; and an automatic-gain controller configured to decrease a gain of the LNA based on the determination of the peak detector.
    • 接收机包括被配置为接收一组RF信号的天线以及耦合到天线的低噪声放大器(LNA),并且放大该RF信号集合以产生一组放大信号。 接收机还包括一个下变频混频器,配置成将放大信号的集合下变频为基带频率。 所述接收器还包括低通滤波器,其被配置为从所述放大信号集合过滤到基带频率的带外信号。 接收机还包括被配置为反转低通滤波器的滤波的高通滤波器。 接收器还包括配置成确定LNA是否工作在饱和状态的峰值检测器; 以及自动增益控制器,被配置为基于峰值检测器的确定来降低LNA的增益。