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1. 发明专利

JP2013062838A Offset correction for passive mixers 有权
标题翻译：被动混合器的偏差校正
公开(公告)号：JP2013062838A
公开(公告)日：2013-04-04
申请号：JP2012237208
申请日：2012-10-26
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： ZHUO WEI , ROGER BROCKENBROUGH , SOLTI PENG
IPC分类号： H03D7/00 , H03D7/12 , H03D7/18 , H04B1/16 , H04B1/26
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1466 , H03D2200/0043 , H03D2200/0047
摘要： PROBLEM TO BE SOLVED: To provide configurable parameters in a mixer to calibrate and correct a mismatch, thereby minimizing mixer distortion.SOLUTION: A mixer comprises first and second RF transistors to receive an input RF signal. The mixer further comprises first and second LO transistors to receive an LO signal. At least one of the transistors has a gate bias voltage that is variable in response to a configurable control signal.
摘要翻译：要解决的问题：为了在混频器中提供可配置参数以校准和校正失配，从而最小化混频器失真。解决方案：混合器包括用于接收输入RF信号的第一和第二RF晶体管。混频器还包括用于接收LO信号的第一和第二LO晶体管。至少一个晶体管具有响应于可配置控制信号而变化的栅极偏置电压。版权所有（C）2013，JPO＆INPIT

2. 发明专利

JP2013070389A Adjustable local oscillator path in communication device with transmitter 有权
标题翻译：具有发射机的通信设备中可调谐的本地振荡器路径
公开(公告)号：JP2013070389A
公开(公告)日：2013-04-18
申请号：JP2012242676
申请日：2012-11-02
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： ZHUO WEI , ARISTOTELE HADJICHRISTOS , PAN TZU-WANG
IPC分类号： H04B1/40 , H04B1/10
CPC分类号： H04B1/109 , H04B1/525
摘要： PROBLEM TO BE SOLVED: To reduce receiver path noise due to mixing of local oscillator phase noise with a self-generated transmitter signal in a receiver.SOLUTION: A communication device includes a transmitter and a receiver. The receiver mixes a local oscillator (LO) signal with a received signal to convert the received signal to an intermediate frequency (IF). The LO path that feeds the LO signal to a downconverting mixer is controlled on the basis of the transmit power of the transmitter. For high transmit power, the drive of the LO path is increased, thereby increasing the signal-to-noise ratio of the LO signal input to the mixer. For low transmit power levels, the drive of the LO path is decreased, reducing power consumption in the communication device. In this way, receiver path noise due to mixing of the LO phase noise with the self-generated transmitter signal is selectively controlled while compensating lower power consumption.
摘要翻译：要解决的问题：为了减少由于本地振荡器相位噪声与接收机中的自发送发射机信号混合引起的接收机路径噪声。解决方案：通信设备包括发射机和接收机。接收机将本地振荡器（LO）信号与接收信号混合，以将接收到的信号转换为中频（IF）。基于发射机的发射功率来控制将LO信号馈送到下变频混频器的LO路径。对于高发射功率，LO路径的驱动增加，从而增加输入到混频器的LO信号的信噪比。对于低发射功率电平，LO路径的驱动减小，从而降低通信设备的功耗。以这种方式，由于LO相位噪声与自发送发射机信号的混合导致的接收机路径噪声被选择性地控制，同时补偿较低的功耗。版权所有（C）2013，JPO＆INPIT

3. 发明专利

JP2012134996A Systems, methods, and apparatus for frequency conversion 审中-公开
标题翻译：用于频率转换的系统，方法和装置
公开(公告)号：JP2012134996A
公开(公告)日：2012-07-12
申请号：JP2012015122
申请日：2012-01-27
申请人： Qualcomm Inc , クゥアルコム・インコーポレイテッドQualcomm Incorporated
发明人： ZHUO WEI , ARISTOTELE HADJICHRISTOS , SAHOTA GURKANWAL KAMAL , SOLTI PENG
IPC分类号： H03D7/14 , H03D7/00 , H04B1/18
CPC分类号： H03D7/166 , H03H19/008 , H03H2007/0192
摘要： PROBLEM TO BE SOLVED: To perform frequency conversion such that a frequency conversion gain is maximized and/or the level of noise in a converted signal is minimized.SOLUTION: A method includes using a quadrature set of local oscillator signals having duty cycles of substantially less than 50 percent to perform a mixing operation on a radio-frequency current signal. Other embodiments include using a quadrature set of local oscillator signals having duty cycles of less than 25 percent.
摘要翻译：要解决的问题：进行频率转换，使得频率转换增益最大化和/或转换信号中的噪声电平最小化。解决方案：一种方法包括使用占空比基本上小于50％的本地振荡器信号的正交组来对射频电流信号进行混频操作。其他实施例包括使用占空比小于25％的本地振荡器信号的正交集合。版权所有（C）2012，JPO＆INPIT

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