专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2015183740A1 TRANSMITTER DIGITAL-TO-ANALOG CONVERTER (DAC)- BASEBAND FILTER (BBF) COMMON MODE INTERFACE 审中-公开
标题翻译：发射机数字到模拟转换器（DAC） - 基带滤波器（BBF）共模接口
公开(公告)号：WO2015183740A1
公开(公告)日：2015-12-03
申请号：PCT/US2015/032207
申请日：2015-05-22
申请人： QUALCOMM INCORPORATED
发明人： CHEN, Minghui , RANJAN, Mahim , GOLDBLATT, Jeremy Mark , BOSSU, Frederic
IPC分类号： H03F3/45
CPC分类号： H03F3/45479 , H02M2001/123 , H03F3/45475 , H03F3/45556 , H03F2203/45078 , H03F2203/45418 , H03F2203/45424 , H03F2203/45526 , H03M1/0607 , H03M1/66
摘要： Removing common-mode current from a pair of complementary current signals, including: generating a common-mode voltage of the pair of complementary current signals including at least a first current signal and a second current signal; measuring and outputting a difference voltage between the generated common-mode voltage and a common-mode reference voltage; and removing at least a portion of the common-mode current from the first current signal and the second current signal based on the difference voltage.
摘要翻译：从一对互补电流信号中去除共模电流，包括：产生包括至少第一电流信号和第二电流信号的一对互补电流信号的共模电压; 测量并输出所产生的共模电压和共模参考电压之间的差分电压; 以及基于所述差电压从所述第一电流信号和所述第二电流信号中去除所述共模电流的至少一部分。

2. 发明申请

WO2010068811A1 AMPLIFIER WITH PROGRAMMABLE OFF VOLTAGE 审中-公开
标题翻译：具有可编程关断电压的放大器
公开(公告)号：WO2010068811A1
公开(公告)日：2010-06-17
申请号：PCT/US2009/067576
申请日：2009-12-10
申请人： QUALCOMM INCORPORATED , CHEN, Minghui
发明人： CHEN, Minghui
IPC分类号： H03F1/22 , H03F1/52 , H03F3/195 , H03F3/24 , H03F3/72 , H03G3/30 , H04B1/04 , H03G1/00 , H03F3/21
CPC分类号： H03F1/223 , H03F1/523 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/72 , H03F2200/108 , H03F2200/294 , H03F2203/21178 , H03F2203/7236 , H03G1/0088
摘要： An amplifier (300) with multiple stages and having improved reliability is described. The multiple amplifier stages are coupled in parallel and include at least one switchable amplifier stage. Each switchable amplifier stage may be operated in an on state or an off state and includes a gain transistor (312) and a cascode transistor (314). The gain transistor (312) amplifies an input signal (Vin) and provides an amplified signal in the on state and is disabled in the off state. The cascode transistor (314) buffers the amplified signal and provides an output signal in the on state and is disabled based on an off voltage (Voff) in the off state. The off voltage (Voff) may be greater than zero volts or may have one of multiple possible values. The off voltage (Voff) may be generated based on an output signal level, e.g., may be set to different values for different ranges of output signal level.
摘要翻译：描述了具有多级并具有改进的可靠性的放大器（300）。多个放大器级并联耦合并且包括至少一个可切换放大器级。每个可切换放大器级可以工作在导通状态或截止状态，并且包括增益晶体管（312）和共源共栅晶体管（314）。增益晶体管（312）放大输入信号（Vin），并提供处于导通状态的放大信号，并在关断状态下被禁止。共源共栅晶体管（314）缓冲放大的信号并提供处于导通状态的输出信号，并且在断开状态下基于截止电压（Voff）被禁用。关断电压（Voff）可以大于零伏，或者可以具有多个可能值中的一个。可以基于输出信号电平产生关断电压（Voff），例如，可以将输出信号电平的不同范围设置为不同的值。

3. 发明申请

WO2007027824A1 DOWNCONVERSION MIXER WITH IM2 CANCELLATION 审中-公开
标题翻译：具有IM2取消功能的DOWNCONVERSION MIXER
公开(公告)号：WO2007027824A1
公开(公告)日：2007-03-08
申请号：PCT/US2006/033936
申请日：2006-08-30
申请人： QUALCOMM INCORPORATED , CHEN, Minghui , WU, Yue
发明人： CHEN, Minghui , WU, Yue
IPC分类号： H03D7/14
CPC分类号： H03D7/1441 , H03D7/1433 , H03D7/1458 , H03D7/1483 , H03D7/1491 , H03D7/165 , H03D2200/0025 , H03D2200/0033 , H03D2200/0084 , H03D2200/0098
摘要： A downconversion mixer with IM2 cancellation includes a mixer, an IM2 generator, and a scaling unit. The mixer frequency downconverts an input RF signal with an LO signal and generates an output baseband signal. The IM2 generator includes first and second field effect transistors (FETs) that receive the input RF signal and generate an intermediate signal having IM2 distortion. The scaling unit scales the intermediate signal to generate a scaled signal and further combines the scaled signal with the output baseband signal to cancel IM2 distortion in the output baseband signal. The IM2 generator may further include first and second amplifiers coupled between the source and gate of the first and second FETs, respectively. Different amounts of IM2 distortion and different temperature variation patterns may be generated in the intermediate signal by using different gains for the amplifiers.
摘要翻译：具有IM2消除的下变频混频器包括混频器，IM2发生器和缩放单元。混频器降频转换具有LO信号的输入RF信号，并产生输出基带信号。 IM2发生器包括接收输入RF信号并产生具有IM2失真的中间信号的第一和第二场效应晶体管（FET）。缩放单元缩放中间信号以产生缩放信号，并且进一步将缩放信号与输出基带信号组合以消除输出基带信号中的IM2失真。 IM2发生器还可以包括分别耦合在第一和第二FET的源极和栅极之间的第一和第二放大器。通过对放大器使用不同的增益，可能在中间信号中产生不同量的IM2失真和不同的温度变化模式。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式