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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
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
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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
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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公开(公告)号：AU2003285122A1
公开(公告)日：2004-05-25
申请号：AU2003285122
申请日：2003-10-31
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID , DHALIWAL UPKAR , SHIU DA-SHAN , ZHANG LI , SY EUGENE
Abstract: Techniques for improved low latency frequency switching are disclosed. In one embodiment, a controller receives a frequency switch command and generates a frequency switch signal at a time determined in accordance with a system timer. In another embodiment, gain calibration is initiated subsequent to the frequency switch signal delayed by the expected frequency synthesizer settling time. In yet another embodiment, DC cancellation control and gain control are iterated to perform gain calibration, with signaling to control the iterations without need for processor intervention. Various other embodiments are also presented. Aspects of the embodiments disclosed may yield the benefit of reducing latency during frequency switching, allowing for increased measurements at alternate frequencies, reduced time spent on alternate frequencies, and the capacity and throughput improvements that follow from minimization of disruption of an active communication session and improved neighbor selection.
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公开(公告)号：AU713865B2
公开(公告)日：1999-12-09
申请号：AU2558097
申请日：1997-04-01
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A novel and improved antenna coupler useful in an adapter for a portable radiotelephone. In a first embodiment, a plurality of curved bands of metal are positioned on a ground plane, with at least one of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple RF signals to and from the antenna of a portable telephone. At least one ground pin is also mounted on the ground plane. When a portable radiotelephone is interfaced with the antenna coupler, the at least one ground pin makes electrical contact with assembly screws or an external ground pad of a battery charging port on the portable radiotelephone. In a second embodiment, a coupling pin makes direct contact with an component of the RF chain of the portable radiotelephone. In a third embodiment, a helical coupler surrounds the antenna of the portable radiotelephone.
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公开(公告)号：HK1010943A1
公开(公告)日：1999-07-02
申请号：HK98110022
申请日：1998-08-19
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A novel and improved antenna coupler useful in an adapter for a portable radiotelephone. In a first embodiment, a plurality of curved bands of metal are positioned on a ground plane, with at least one of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple RF signals to and from the antenna of a portable telephone. At least one ground pin is also mounted on the ground plane. When a portable radiotelephone is interfaced with the antenna coupler, the at least one ground pin makes electrical contact with assembly screws or an external ground pad of a battery charging port on the portable radiotelephone. In a second embodiment, a coupling pin makes direct contact with an component of the RF chain of the portable radiotelephone. In a third embodiment, a helical coupler surrounds the antenna of the portable radiotelephone.
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Patent Agency Ranking
公开(公告)号：NO992620D0
公开(公告)日：1999-06-01
申请号：NO992620
申请日：1999-06-01
Applicant: QUALCOMM INC
Inventor： FUNK THOMAS J , MALDONADO DAVID
Abstract: An antenna adapter for interfacing a portable radiotelephone with external equipment. In a preferred embodiment, a connector assembly includes a first connector portion that inserts directly into the radiotelephone's antenna port, replacing the normal antenna assembly. Matching electrical components on a circuit board are used to match the impedance of the antenna port of the portable radiotelephone. A second connector portion typically uses conventional RF connectors to couple the radiotelephone antenna port to external equipment.
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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
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
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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
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
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公开(公告)号：AU2002245251B2
公开(公告)日：2007-02-08
申请号：AU2002245251
申请日：2002-01-10
Applicant: QUALCOMM INC
Inventor： PETERZELL PAUL E , SAHOTA KAMAL , DUNWORTH JEREMY D , MALDONADO DAVID , GARD KEVIN , SEE PUAY HOE ANDREW
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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公开(公告)号：DE69729518T2
公开(公告)日：2005-08-25
申请号：DE69729518
申请日：1997-04-01
Applicant: QUALCOMM INC
Inventor： MALDONADO DAVID
Abstract: A novel and improved antenna coupler useful in an adapter for a portable radiotelephone. In a first embodiment, a plurality of curved bands of metal are positioned on a ground plane, with at least one of the plurality of curved bands of metal being electrically isolated from the ground plane so as to couple RF signals to and from the antenna of a portable telephone. At least one ground pin is also mounted on the ground plane. When a portable radiotelephone is interfaced with the antenna coupler, the at least one ground pin makes electrical contact with assembly screws or an external ground pad of a battery charging port on the portable radiotelephone. In a second embodiment, a coupling pin makes direct contact with an component of the RF chain of the portable radiotelephone. In a third embodiment, a helical coupler surrounds the antenna of the portable radiotelephone.
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