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    • 5. 发明申请
    • Polar modulator and a use thereof
    • 极性调节剂及其用途
    • US20060135089A1
    • 2006-06-22
    • US11284514
    • 2005-11-22
    • Giuseppe Puma
    • Giuseppe Puma
    • H04B1/02
    • H04L27/361H03C5/00H03F3/24H03L7/06
    • A polar modulator has a low AM-AM and AM-PM distortion comprises a phase locked loop. The phase locked loop is designed for outputting a high-frequency signal with a frequency derived from a phase modulation signal at an actuating input of the phase locked loop. A filter device, for suppressing a DC signal component, is coupled to an output of the phase locked loop. Furthermore, provision is made of a controllable voltage source with a control input suitable for feeding in an amplitude modulation signal. A push-pull amplifier is connected by an input to the filter device. It comprises two feedback amplifier transistors connected in series, which are connected to a voltage output of the controllable voltage source for supply purposes. Control terminals of the amplifier transistors are connected to the input and, via a load, to an output of the push-pull amplifier.
    • 极性调制器具有低AM-AM和AM-PM失真包括锁相环。 锁相环被设计用于在锁相环的致动输入处输出具有从相位调制信号导出的频率的高频信号。 用于抑制DC信号分量的滤波器装置耦合到锁相环的输出端。 此外,提供具有适于馈送幅度调制信号的控制输入的可控电压源。 推挽放大器通过输入连接到滤波器装置。 它包括串联连接的两个反馈放大器晶体管,它们连接到可控电压源的电压输出端用于供电目的。 放大器晶体管的控制端子连接到输入端并通过负载连接到推挽放大器的输出端。
    • 8. 发明申请
    • Oscillator circuit, in particular for mobile radio
    • 振荡电路,特别适用于移动无线电
    • US20060226918A1
    • 2006-10-12
    • US11394013
    • 2006-03-30
    • Alexander BelitzerStefan HerzingerGiuseppe Puma
    • Alexander BelitzerStefan HerzingerGiuseppe Puma
    • H03L7/00
    • H03L7/00H03B5/1212H03B5/1228H03B5/124
    • An oscillator is disclosed that is tunable to discrete values, and includes a tuning element which can be connected via a switching device. A rectifier circuit is connected to the output of the oscillator and forms a clock signal from the oscillator signal. The oscillator circuit contains a phase delay circuit having a switching input, a clock signal input which is coupled to the output of the rectifier circuit, and a switching output coupled to the switching device. The phase delay circuit has a comparison circuit for comparison of a phase of the clock signal that is applied to the signal input with a reference phase. This phase delay circuit is designed to emit a switching signal after application of an activation signal to the switching input and after the phase of the clock signal which is applied to the signal input matches the reference phase. In consequence, the switching process is delayed until the step-function response of the output signal of the oscillator does not cause a sudden phase change in the clock signal.
    • 公开了可调谐到离散值的振荡器,并且包括可经由开关装置连接的调谐元件。 整流电路连接到振荡器的输出端并形成来自振荡器信号的时钟信号。 振荡器电路包括具有开关输入的相位延迟电路,耦合到整流器电路的输出的时钟信号输入和耦合到开关器件的开关输出。 相位延迟电路具有用于比较施加到具有参考相位的信号输入的时钟信号的相位的比较电路。 该相位延迟电路被设计成在施加到开关输入的激活信号之后并且在施加到信号输入的时钟信号的相位与参考相位匹配之后发出切换信号。 因此,切换过程被延迟,直到振荡器的输出信号的阶跃函数响应不会引起时钟信号的突然相位变化。
    • 10. 发明申请
    • Detecting usable frequency channels by exploiting complex polyphase filter operation
    • 通过利用复杂的多相滤波器操作来检测可用的频道
    • US20050009487A1
    • 2005-01-13
    • US10829665
    • 2004-04-22
    • Giuseppe Puma
    • Giuseppe Puma
    • H04B1/30H04B1/16H04B1/26H04B15/00
    • H04B1/30
    • A circuit arrangement for detecting a usable frequency channel includes first and second devices for performing frequency conversion. The first and second frequency conversion devices have respective local oscillator inputs to which respective local oscillator signals are applied. The local oscillator signals are at a common frequency and have a phase difference of precisely 90°. A complex polyphase filter has first and second filter inputs connected to respective outputs of the first and second frequency conversion devices. A detection arrangement is connected to outputs of the complex polyphase filter in order to detect a signal level. A further arrangement can vary the phase angle of a signal output from at least one of the frequency conversion devices.
    • 用于检测可用频道的电路装置包括用于执行频率转换的第一和第二装置。 第一和第二变频装置具有各自的本地振荡器输入,各个本地振荡器信号被施加到其上。 本地振荡器信号处于公共频率,并具有精确的90°的相位差。 复合多相滤波器具有连接到第一和第二频率转换装置的相应输出的第一和第二滤波器输入。 检测装置连接到复数多相滤波器的输出端,以检测信号电平。 另外的布置可以改变从至少一个频率转换装置输出的信号的相位角。