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    Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics
    1.
    发明专利
    Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics 审中-公开
    连续可变增益无线电频率放大器具有线性增益控制特性

    公开(公告)号：JP2010273360A

    公开(公告)日：2010-12-02

    申请号：JP2010152232

    申请日：2010-07-02

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： BARNETT KENNETH ,  WALKER BRETT C ,  GARD KEVIN

    IPC: H03G3/10 ,  H03F1/30 ,  H03G1/04 ,  H03G3/30 ,  H03G7/00 ,  H03G7/06 ,  H04B5/00

    CPC classification number: H04B5/00 ,  H03F1/301 ,  H03G1/04 ,  H03G3/3036 ,  H03G3/3042 ,  H03G7/001

    Abstract: PROBLEM TO BE SOLVED: To provide a radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control.
    SOLUTION: An RF driver amplifier system includes a linear transconductor receiving an input voltage and providing a controlled current on the basis of input voltage received, temperature compensation circuitry for varying power from the linear transconductor according to absolute temperature, an exponential current controller receiving power varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry, thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry. Control current passes from the inductive degeneration compensator to the driver amplifier circuitry.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供提供线性分贝增益控制的射频（RF）驱动放大器系统和方法。 解决方案：RF驱动放大器系统包括接收输入电压并基于接收的输入电压提供受控电流的线性跨导器，用于根据绝对温度从线性跨导器改变功率的温度补偿电路，指数电流控制器 接收功率根据温度变化并提供响应的指数电流，以及感应退化补偿器，其接收指数电流并向驱动器放大器电路提供控制电流，从而补偿由于驱动器放大器电路中的至少一个电感器引起的电感变性。 控制电流从感应退化补偿器传递到驱动器放大器电路。 版权所有（C）2011，JPO＆INPIT

    Local oscillator leakage control in direct conversion processes
    2.
    发明专利
    Local oscillator leakage control in direct conversion processes 有权
    直接转换过程中的局部振荡器泄漏控制

    公开(公告)号：JP2008306759A

    公开(公告)日：2008-12-18

    申请号：JP2008203318

    申请日：2008-08-06

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： PETERZELL PAUL E ,  MALDONADO DAVID ,  GARD KEVIN ,  SEE PUAY HOE ANDREW ,  DUNWORTH JEREMY D ,  SAHOTA KAMAL

    IPC: H03L7/183 ,  H04B1/26 ,  H04B1/30

    Abstract: PROBLEM TO BE SOLVED: To provide local oscillator leakage control in direct conversion processes. SOLUTION: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：在直接转换过程中提供本地振荡器泄漏控制。 提出了一种用于在零中频（IF）接收机或发射机中产生本地振荡器（LO）频率的系统和方法。 从压控振荡器（VCO）接收信号。 该信号具有VCO频率。 将VCO频率除以数字N以产生具有分频的信号。 然后将具有VCO频率的信号与具有分频频率的信号混合，以产生具有输出频率的输出信号。 本地振荡器泄漏减少。 因此，接收机或发射机可以在多个无线通信频带和模式中操作并满足相关规范。 版权所有（C）2009，JPO＆INPIT

    Method and circuit to generate sinusoids for modulators and frequency converters
    4.
    发明专利
    Method and circuit to generate sinusoids for modulators and frequency converters 未知

    公开(公告)号：AU1309502A

    公开(公告)日：2002-04-22

    申请号：AU1309502

    申请日：2001-10-09

    Applicant: QUALCOMM INC

    Inventor： SAHOTA GURKANWAL S ,  GARD KEVIN

    IPC: H03D7/00 ,  H03B21/00 ,  H03B21/01 ,  H03B27/00 ,  H03D7/16 ,  H04B1/04

    Abstract: A signal generator includes first and second mixers, first and second phase shift networks, and a summer. The first and second mixers respectively receive and mix a quadrature and an inphase sinusoid at a first frequency with a second input sinusoid at a second frequency. The first and second phase shift networks respectively couple to the first and second mixers, receive the outputs from the first and second mixers, and generate first and second phase shift networks respectively couple to the first and second mixers, receive the outputs from the first and second mixers, and generate first and second phase shifted signals. The summer couples to the first and second phase shift networks and receives ans sums the first and second phase shifted signals to generate a first output sinusoid. A second summer may be coupled to the first and second phase shift networks to receive and sum third and fourth phase shifted signals (generated by the first and second phase shift networks, respectively) to generate a second output sinusoid. The first and second output sinusoids are in quadrature. A third phase shift network may be adapted to receive a first input sinusoidal at the first frequency and generate the inphase and quadrature sinusoids.

    5.
    发明专利
    未知

    公开(公告)号：BR0206415A

    公开(公告)日：2004-10-19

    申请号：BR0206415

    申请日：2002-01-10

    Applicant: QUALCOMM INC

    Inventor： PETERZELL PAUL E ,  MALDONADO DAVID ,  GARD KEVIN ,  SEE ANDREW PUAY HOE ,  DUNWORTH JEREMY D ,  SAHOTA KAMAL

    IPC: H03L7/183 ,  G01N33/14 ,  H03D3/00 ,  H04B1/30 ,  H04B1/40

    Abstract: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.

    Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics
    6.
    发明专利
    Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics 未知

    公开(公告)号：AU2003290822A8

    公开(公告)日：2004-06-03

    申请号：AU2003290822

    申请日：2003-11-12

    Applicant: QUALCOMM INC

    Inventor： BARNETT KENNETH ,  WALKER BRETT C ,  GARD KEVIN

    IPC: H03F1/30 ,  H03G1/04 ,  H03G3/30 ,  H03G7/00 ,  H03G7/06 ,  H04B5/00

    Abstract: A radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control is provided. The RF driver amplifier system comprises a linear transconductor receiving an input voltage and providing a controlled current based on input voltage received, temperature compensation circuitry for varying current from the linear transconductor according to absolute temperature, an exponential current controller receiving current varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry, thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry. Control current passes from the inductive degeneration compensator to the driver amplifier circuitry. Output gain from the driver amplifier circuitry varies linearly in decibels with respect to the input voltage.

    10.
    发明专利
    未知

    公开(公告)号：AT381815T

    公开(公告)日：2008-01-15

    申请号：AT02713398

    申请日：2002-01-10

    Applicant: QUALCOMM INC

    Inventor： PETERZELL PAUL ,  MALDONADO DAVID ,  GARD KEVIN ,  SEE PUAY HOE ,  DUNWORTH JEREMY ,  SAHOTA KAMAL

    IPC: H03L7/183 ,  H04B1/30 ,  G01N33/14 ,  H03D3/00 ,  H04B1/40

    Abstract: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.

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