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    Local oscillator leakage control in direct conversion processes
    1.
    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

    4.
    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.

    CALIBRATION TECHNIQUES FOR FREQUENCY SYNTHESIZERS
    5.
    发明专利
    CALIBRATION TECHNIQUES FOR FREQUENCY SYNTHESIZERS 未知

    公开(公告)号：AU2003220074A1

    公开(公告)日：2003-09-22

    申请号：AU2003220074

    申请日：2003-03-04

    Applicant: QUALCOMM INC

    Inventor： DUNWORTH JEREMY D ,  WALKER BRETT C

    IPC: H03L7/099 ,  H03L7/113 ,  H03L7/199 ,  H03L1/02 ,  H03L7/087

    Abstract: In one embodiment, this disclosure describes a frequency synthesizer for use in a wireless communication device, or similar device that requires precision frequency synthesis but small amounts of noise. In particular, the frequency synthesizer may include a phase locked loop (PLL) and an integrated voltage controlled oscillator (VCO). The frequency synthesizer may implement one or more calibration techniques to quickly and precisely calibrate the VCO. In this manner, the analog gain of the VCO can be significantly reduced, which may improve performance of the wireless communication device. Also, the initial state of the PLL may be improved to reduce lock time of the PLL, which may enhance performance of the wireless communication device.

    7.
    发明专利
    未知

    公开(公告)号：DE60224162T2

    公开(公告)日：2008-12-04

    申请号：DE60224162

    申请日：2002-01-10

    Applicant: QUALCOMM INC

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

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

    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

    8.
    发明专利
    未知

    公开(公告)号：DE60224162D1

    公开(公告)日：2008-01-31

    申请号：DE60224162

    申请日：2002-01-10

    Applicant: QUALCOMM INC

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

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

    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

    LOCAL OSCILLATOR LEAKAGE CONTROL IN DIRECT CONVERSION PROCESSES
    10.
    发明申请
    LOCAL OSCILLATOR LEAKAGE CONTROL IN DIRECT CONVERSION PROCESSES 审中-公开
    直接转换过程中的局部振荡器泄漏控制

    公开(公告)号：WO02056489A3

    公开(公告)日：2003-02-27

    申请号：PCT/US0200888

    申请日：2002-01-10

    Applicant: QUALCOMM INC

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

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

    CPC classification number: H03D3/008 ,  G01N33/14 ,  H03D3/009

    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.

    Abstract translation: 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。

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