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    • 15. 发明申请
    • WIRELESS COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD FOR BIASING A POWER AMPLIFIER
    • 无线通信单元,集成电路和放大功率放大器的方法
    • US20100184389A1
    • 2010-07-22
    • US12063425
    • 2005-08-09
    • Frederic FraysseGilles MontoriolDidier Salle
    • Frederic FraysseGilles MontoriolDidier Salle
    • H04B1/02
    • H04B1/04
    • A wireless communication unit (100) comprises a transmitter (120) arranged to transmit an envelope modulated signal. The transmitter (120) comprises a radio frequency power amplifier (124) operably coupled to a logarithmic detector (210, 310) and a bias control circuit (126) arranged to set a direct current bias level of the radio frequency power amplifier (124) via a bias signal. The logarithmic detector (210, 310) is arranged to detect the envelope modulated signal and provide the detected envelope modulated signal to the bias control circuit such that the bias signal applied to the radio frequency power amplifier (124) comprises both a direct current and a low frequency component based on the detected envelope modulated signal. In this manner, the present invention supports a tradeoff of linearity for additional efficiency, as well as providing more margin on adjacent channel power levels, whilst maintaining a good overall power added efficiency.
    • 无线通信单元(100)包括被布置为发射包络调制信号的发射机(120)。 发射机(120)包括可操作地耦合到对数检测器(210,310)的射频功率放大器(124)和被布置成设置射频功率放大器(124)的直流偏置电平的偏置控制电路(126) 通过偏置信号。 对数检测器(210,310)被布置成检测包络调制信号,并将检测到的包络调制信号提供给偏置控制电路,使得施加到射频功率放大器(124)的偏置信号包括直流电和 基于检测到的包络调制信号的低频分量。 以这种方式,本发明支持对于附加效率的线性的折衷,并且在相邻信道功率电平上提供更多的余量,同时保持良好的整体功率附加效率。
    • 16. 发明授权
    • Transconductance amplifier
    • 跨导放大器
    • US07183848B2
    • 2007-02-27
    • US10973728
    • 2004-10-26
    • Didier SalleIra Miller
    • Didier SalleIra Miller
    • H03F3/45
    • H03F3/45766H03F3/45183H03F2203/45288
    • A transconductance amplifier comprising a first input circuit having a first feedback loop; a second input circuit having a second feedback loop; a resistor having a first interface connected to the first input circuit and a second interface connected to the second input circuit; a first differential pair having a first transistor arranged to control current flow in the first feedback loop to maintain a voltage at the first interface of the resistor at substantially a constant voltage relative to an input voltage applied to the first input circuit and a second transistor arranged to control current flow for a first output; and a second differential pair having a third transistor arranged to control current flow in the second feedback loop to maintain a voltage at the second interface of the resistor at substantially a constant voltage relative to an input voltage applied to the second input circuit and a fourth transistor arranged to control current flow for a second output.
    • 一种跨导放大器,包括具有第一反馈回路的第一输入电路; 具有第二反馈回路的第二输入电路; 电阻器,具有连接到第一输入电路的第一接口和连接到第二输入电路的第二接口; 第一差分对,其具有第一晶体管,其布置成控制第一反馈环路中的电流流动,以将电阻器的第一接口处的电压保持在基本上恒定的电压,相对于施加到第一输入电路的输入电压;以及第二晶体管, 以控制第一输出的电流; 以及第二差分对,其具有第三晶体管,其布置成控制所述第二反馈环路中的电流流动,以将所述电阻器的所述第二接口处的电压相对于施加到所述第二输入电路的输入电压保持在基本上恒定的电压;以及第四晶体管 布置成控制用于第二输出的电流。
    • 17. 发明申请
    • Transconductance amplifier
    • 跨导放大器
    • US20050088234A1
    • 2005-04-28
    • US10973728
    • 2004-10-26
    • Didier SalleIra Miller
    • Didier SalleIra Miller
    • H03F3/45
    • H03F3/45766H03F3/45183H03F2203/45288
    • A transconductance amplifier comprising a first input circuit having a first feedback loop; a second input circuit having a second feedback loop; a resistor having a first interface connected to the first input circuit and a second interface connected to the second input circuit; a first differential pair having a first transistor arranged to control current flow in the first feedback loop to maintain a voltage at the first interface of the resistor at substantially a constant voltage relative to an input voltage applied to the first input circuit and a second transistor arranged to control current flow for a first output; and a second differential pair having a third transistor arranged to control current flow in the second feedback loop to maintain a voltage at the second interface of the resistor at substantially a constant voltage relative to an input voltage applied to the second input circuit and a fourth transistor arranged to control current flow for a second output.
    • 一种跨导放大器,包括具有第一反馈回路的第一输入电路; 具有第二反馈回路的第二输入电路; 电阻器,具有连接到第一输入电路的第一接口和连接到第二输入电路的第二接口; 第一差分对,其具有第一晶体管,其布置成控制第一反馈环路中的电流流动,以将电阻器的第一接口处的电压保持在基本上恒定的电压,相对于施加到第一输入电路的输入电压;以及第二晶体管, 以控制第一输出的电流; 以及第二差分对,其具有第三晶体管,其布置成控制所述第二反馈环路中的电流流动,以将所述电阻器的所述第二接口处的电压相对于施加到所述第二输入电路的输入电压保持在基本上恒定的电压;以及第四晶体管 布置成控制用于第二输出的电流。
    • 18. 发明授权
    • Secam chrominance signal demodulator with two red-blue channels and a
single oscillator
    • Secam色度信号解调器,带有两个红蓝色通道和单个振荡器
    • US6151080A
    • 2000-11-21
    • US288349
    • 1999-04-08
    • Didier SalleGerard Bret
    • Didier SalleGerard Bret
    • H04N11/18H04N9/66
    • H04N11/186
    • The SECAM chrominance signal demodulator includes an oscillator with a controlled frequency, a phase comparator with a first input connected to an oscillator output, a second input to receive a chrominance signal, and an output connected to an input loop of the oscillator. The demodulator further includes a fixed current source, also connected to the loop input, a current mirror to copy a current equal to the sum of the fixed current and a comparator output current in the output branches comprising first and second calibration resistors respectively, in series with a common resistor. Output voltages corresponding to the red and blue components of the chrominance signal are measured at the terminals of the calibration resistors respectively. The demodulator is used in television sets, for example.
    • SECAM色度信号解调器包括具有受控频率的振荡器,具有连接到振荡器输出的第一输入的相位比较器,接收色度信号的第二输入端和连接到振荡器的输入环路的输出。 解调器还包括也连接到环路输入的固定电流源,电流镜以分别复合等于固定电流和比较器输出电流之和的电流分别包括第一和第二校准电阻器的输出分支串联 具有公共电阻。 对应于色度信号的红色和蓝色分量的输出电压分别在校准电阻的端子处测量。 解调器例如用在电视机中。
    • 20. 发明申请
    • INTEGRATED CIRCUIT COMPRISING FREQUENCY GENERATION CIRCUITRY FOR CONTROLLING A FREQUENCY SOURCE
    • 包含用于控制频率源的频率发生电路的集成电路
    • US20110298506A1
    • 2011-12-08
    • US13145125
    • 2010-02-10
    • Didier SalleOlivier DoareStephane Dugalleix
    • Didier SalleOlivier DoareStephane Dugalleix
    • H03L7/08
    • G01S7/35G01S7/032G01S13/34G01S13/931G01S2013/9325H03C3/0925H03L7/1976
    • An integrated circuit comprises frequency generation circuitry for controlling a frequency source for use in an automotive radar system. The frequency generation circuitry comprises low-path modulation circuitry arranged to generate a first, low-path control signal for providing lower frequency modulation of the frequency source, the low-path modulation circuitry comprising a Phase Locked Loop (PLL) arranged to generate the low-path control signal for controlling the frequency source and a fractional-N divider located within a feedback loop of the PLL, and frequency pattern control module operably coupled to the fractional-N divider and arranged to control the fractional-N divider, by way of at least a first, lower frequency pattern control signal. The frequency generation circuitry further comprises high-path modulation circuitry arranged to generate a second, high-path control signal for providing higher frequency modulation of the frequency source.
    • 集成电路包括用于控制在汽车雷达系统中使用的频率源的频率产生电路。 频率产生电路包括低通道调制电路,其被布置为产生用于提供频率源的较低频率调制的第一低路径控制信号,该低通道调制电路包括被配置为产生低电平的锁相环(PLL) 用于控制频率源的PATH控制信号和位于PLL的反馈环路内的分数N分频器,以及频率模式控制模块,其可操作地耦合到分数N分频器,并被布置成通过以下方式控制分数N分频器 至少第一低频模式控制信号。 频率产生电路还包括被设置为产生用于提供频率源的更高频率调制的第二高路径控制信号的高路径调制电路。