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1. 发明申请

WO2011050213A1 LOW-PASS FILTER DESIGN 审中-公开
标题翻译：低通滤波器设计
公开(公告)号：WO2011050213A1
公开(公告)日：2011-04-28
申请号：PCT/US2010/053626
申请日：2010-10-21
申请人： QUALCOMM INCORPORATED , KHATIBI, Arezou , BICAKCI, Ara , GAETHKE, Rainer
发明人： KHATIBI, Arezou , BICAKCI, Ara , GAETHKE, Rainer
IPC分类号： H03H11/12
CPC分类号： H03H11/1213
摘要： Techniques for low-pass filtering with high quality factor (Q). In an exemplary embodiment, an input current is coupled to the drain of a first transistor. The drain and the gate of the first transistor are coupled together by a resistor R1, and the drain is coupled to a reference voltage by a first capacitor C1. The gate is coupled to a reference voltage by a second capacitor C2. The gate is further coupled to the gate of a second transistor, and an output current is coupled to the drain of the second transistor. In another exemplary embodiment, further passive elements may be coupled to generate an odd-order low-pass transfer characteristic. Multiple filters may be cascaded in series to synthesize a filter having arbitrary order.
摘要翻译：具有高品质因数（Q）的低通滤波技术。在示例性实施例中，输入电流耦合到第一晶体管的漏极。第一晶体管的漏极和栅极由电阻器R1耦合在一起，并且漏极通过第一电容器C1耦合到参考电压。栅极通过第二电容器C2耦合到参考电压。栅极还耦合到第二晶体管的栅极，并且输出电流耦合到第二晶体管的漏极。在另一示例性实施例中，可以连接另外的无源元件以产生奇数低通传输特性。多个滤波器可以串联级联以合成具有任意顺序的滤波器。

2. 发明申请

WO2008086125A3 I/Q CALIBRATION FOR WALKING-IF ARCHITECTURES 审中-公开
公开(公告)号：WO2008086125A3
公开(公告)日：2008-07-17
申请号：PCT/US2008/050152
申请日：2008-01-03
申请人： QUALCOMM INCORPORATED , WORTEL, Klaas , GAETHKE, Rainer , JONES, Vincent, K. , GARDNER, James
发明人： WORTEL, Klaas , GAETHKE, Rainer , JONES, Vincent, K. , GARDNER, James
IPC分类号： H04L27/36
摘要： Systems and methodologies are described that employ calibration techniques for a station in a wireless communication system that can be utilized to provide.joint estimates for distortion introduced by in-phase and quadrature (I/Q) imbalance and mixing-product modulated images.

3. 发明申请

WO2011050213A8 LOW-PASS FILTER DESIGN 审中-公开
标题翻译：低通滤镜设计
公开(公告)号：WO2011050213A8
公开(公告)日：2012-04-26
申请号：PCT/US2010053626
申请日：2010-10-21
申请人： QUALCOMM INC , KHATIBI AREZOU , BICAKCI ARA , GAETHKE RAINER
发明人： KHATIBI AREZOU , BICAKCI ARA , GAETHKE RAINER
IPC分类号： H03H11/12
CPC分类号： H03H11/1213
摘要： Techniques for low-pass filtering with high quality factor (Q). In an exemplary embodiment, an input current is coupled to the drain of a first transistor. The drain and the gate of the first transistor are coupled together by a resistor R1, and the drain is coupled to a reference voltage by a first capacitor C1. The gate is coupled to a reference voltage by a second capacitor C2. The gate is further coupled to the gate of a second transistor, and an output current is coupled to the drain of the second transistor. In another exemplary embodiment, further passive elements may be coupled to generate an odd-order low-pass transfer characteristic. Multiple filters may be cascaded in series to synthesize a filter having arbitrary order.
摘要翻译：低品质因子低通滤波技术（Q）。在示例性实施例中，输入电流耦合到第一晶体管的漏极。第一晶体管的漏极和栅极由电阻器R1耦合在一起，漏极通过第一电容器C1耦合到参考电压。栅极通过第二电容器C2耦合到参考电压。栅极还耦合到第二晶体管的栅极，并且输出电流耦合到第二晶体管的漏极。在另一示例性实施例中，可以耦合另外的无源元件以产生奇数低通传输特性。多个滤波器可以串联级联以合成具有任意顺序的滤波器。

4. 发明申请

WO2008086125A2 I/Q CALIBRATION FOR WALKING-IF ARCHITECTURES 审中-公开
标题翻译： I / Q校准 - 如果建筑架构
公开(公告)号：WO2008086125A2
公开(公告)日：2008-07-17
申请号：PCT/US2008050152
申请日：2008-01-03
申请人： QUALCOMM INC , WORTEL KLAAS , GAETHKE RAINER , JONES VINCENT K , GARDNER JAMES
发明人： WORTEL KLAAS , GAETHKE RAINER , JONES VINCENT K , GARDNER JAMES
IPC分类号： H04L27/36
CPC分类号： H04L27/364 , H04L27/3863
摘要： Systems and methodologies are described that facilitate calibration techniques for a station in a wireless communication system that can be utilized to provide joint estimates for distortion introduced by in-phase and quadrature (I/Q) imbalance and mixing-product modulated images.
摘要翻译：描述了促进无线通信系统中的站的校准技术的系统和方法，其可以用于提供由同相和正交（I / Q）不平衡和混合产物调制图像引入的失真的联合估计。

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