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

WO2008112800A2 WIRELESS RECEIVER WITH NOTCH FILTER TO REDUCE EFFECTS OF TRANSMIT SIGNAL LEAKAGE 审中-公开
标题翻译：带有过滤器的无线接收器，以减少发射信号泄漏的影响
公开(公告)号：WO2008112800A2
公开(公告)日：2008-09-18
申请号：PCT/US2008056711
申请日：2008-03-12
申请人： QUALCOMM INC , CHANG LI-CHUNG , GUDEM PRASAD S , CABANILLAS JOSE
发明人： CHANG LI-CHUNG , GUDEM PRASAD S , CABANILLAS JOSE
IPC分类号： H04B1/52 , H04B1/10
CPC分类号： H04B1/525 , H04B1/1036
摘要： This disclosure describes techniques for reducing adverse effects of TX signal leakage in a full-duplex, wireless communication device. The techniques make use of a notch filter to reject TX signal leakage in a signal processed in the RX path of the wireless communication device. The notch filter may be constructed as a complex notch filter using passive resistor and capacitor components to produce a notch frequency that attenuates TX signal leakage components in a desired signal. The notch filter may be applied to a down-converted, baseband signal produced by a passive mixer.
摘要翻译：本公开描述了用于减少全双工无线通信设备中的TX信号泄漏的不利影响的技术。这些技术利用陷波滤波器来抑制在无线通信设备的RX路径中处理的信号中的TX信号泄漏。陷波滤波器可以被构造为使用无源电阻器和电容器部件的复陷波滤波器，以产生在所需信号中衰减TX信号泄漏分量的陷波频率。陷波滤波器可以应用于由无源混频器产生的下变频的基带信号。

2. 发明申请

WO2013003503A3 SIGNAL SPLITTING CARRIER AGGREGATION RECEIVER ARCHITECTURE 审中-公开
标题翻译：信号分离载波聚合接收机架构
公开(公告)号：WO2013003503A3
公开(公告)日：2013-05-02
申请号：PCT/US2012044473
申请日：2012-06-27
申请人： QUALCOMM INC , GUDEM PRASAD SRINIVASA SIVA , FERNANDO UDARA C , CHANG LI-CHUNG
发明人： GUDEM PRASAD SRINIVASA SIVA , FERNANDO UDARA C , CHANG LI-CHUNG
IPC分类号： H04B1/38 , H04B1/00
CPC分类号： H04B1/3805 , H04B1/005
摘要： A wireless communication device configured for receiving a multiple carrier signal is described. The wireless communication device includes a primary signal splitting carrier aggregation architecture. The primary signal splitting carrier aggregation architecture includes a primary antenna and a transceiver chip. The primary signal splitting carrier aggregation architecture reuses a first diversity/simultaneous hybrid dual receiver path. The wireless communication device also includes a secondary signal splitting carrier aggregation architecture. The secondary signal splitting carrier aggregation architecture includes a secondary antenna and a receiver chip. The secondary signal splitting carrier aggregation architecture reuses a second diversity/simultaneous hybrid dual receiver path.
摘要翻译：描述了被配置为接收多载波信号的无线通信设备。无线通信设备包括主信号分离载波聚合体系结构。主信号分离载波聚合架构包括主天线和收发芯片。主信号分离载波聚合架构重新使用第一分集/同步混合双接收机路径。无线通信设备还包括辅助信号分离载波聚合架构。次级信号分离载波聚合架构包括辅助天线和接收机芯片。次信号分离载波聚合架构重新使用第二分集/同步混合双接收机路径。

3. 发明专利

JP2013081201A Multi-linearity mode lna having deboost current path 有权
标题翻译：具有DEBOOST电流路径的多线性模式
公开(公告)号：JP2013081201A
公开(公告)日：2013-05-02
申请号：JP2012256111
申请日：2012-11-22
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： CHANG LI-CHUNG
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3205 , H03F1/223 , H03F1/3252 , H03F3/72 , H03F2200/492
摘要： PROBLEM TO BE SOLVED: To provide an amplifier with high linearity and low distortion.SOLUTION: A modified derivative superposition low noise amplifier includes a main current path and a cancel current path. Third-order distortion in the cancel path is used to cancel third-order distortion in the main path. In one novel aspect, there is a separate source degeneration inductor for each of the two current paths, thereby facilitating tuning of one current path without affecting the other current path. In a second novel aspect, a deboost current path is provided that does not pass through an LNA load. The deboost current allows negative feedback to be increased without generating headroom problems. In a third novel aspect, the cancel current path and/or deboost current path is programmably disabled to reduce power consumption and improve noise figure in operational modes that do not require high linearity.
摘要翻译：要解决的问题：提供具有高线性度和低失真的放大器。解决方案：改进的导数叠加低噪声放大器包括主电流路径和消除电流路径。取消路径中的三阶失真用于消除主路径中的三阶失真。在一个新颖的方面，对于两个电流路径中的每一个，存在单独的源极退化电感器，从而有助于调谐一个电流路径而不影响另一个电流路径。在第二个新颖的方面，提供了不通过LNA负载的去桥电流路径。去抖动电流允许增加负反馈而不产生余量问题。在第三个新颖的方面，消除电流路径和/或去桥电流路径可编程地被禁用以降低功耗并改善不需要高线性度的操作模式中的噪声系数。版权所有（C）2013，JPO＆INPIT

4. 发明专利

JP2013066189A Wireless receiver with notch filter to reduce effects of transmit signal leakage 有权
标题翻译：带有过滤器的无线接收器，以减少发射信号泄漏的影响
公开(公告)号：JP2013066189A
公开(公告)日：2013-04-11
申请号：JP2012237178
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： CHANG LI-CHUNG , PRASAD S GUDEM , JOSE CABANILLAS
IPC分类号： H04B1/10 , H04B1/40
CPC分类号： H04B1/525 , H04B1/1036
摘要： PROBLEM TO BE SOLVED: To reduce adverse effects of TX signal leakage in a full-duplex wireless communication device.SOLUTION: A notch filter 24 is utilized to reject TX signal leakage in a signal processed in an RX path of a wireless communication device 10. The notch filter 24 is constructed as a complex notch filter using passive resistor and capacitor components to produce a notch frequency that attenuates TX signal leakage components in a desired signal. The notch filter 24 is applied to a down-converted baseband signal produced by a passive mixer 22.
摘要翻译：要解决的问题：减少全双工无线通信设备中TX信号泄漏的不利影响。解决方案：使用陷波滤波器24来抑制在无线通信设备10的RX路径中处理的信号中的TX信号泄漏。陷波滤波器24被构造为使用无源电阻器和电容器组件产生的复陷波滤波器一个陷波频率，用于衰减所需信号中的TX信号泄漏分量。陷波滤波器24被应用于由无源混频器22产生的下变频基带信号。版权所有：（C）2013，JPO＆INPIT

5. 发明专利

JP2013081202A Multi-linearity mode lna having deboost current path 有权
标题翻译：具有DEBOOST电流路径的多线性模式
公开(公告)号：JP2013081202A
公开(公告)日：2013-05-02
申请号：JP2012256112
申请日：2012-11-22
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： CHANG LI-CHUNG
IPC分类号： H03F1/32 , H03F3/193
CPC分类号： H03F1/3205 , H03F1/223 , H03F1/3252 , H03F3/72 , H03F2200/492
摘要： PROBLEM TO BE SOLVED: To provide a low noise amplifier (LNA) having a very high third-order input intercept point (IIP3) as well as a low noise factor (NF), high gain and a low current consumption.SOLUTION: A modified derivative superposition (DS) low noise amplifier (LNA) 222 includes a main current path 320 and a cancel current path 322. Third-order distortion in the cancel path is used to cancel third-order distortion in the main path. In one novel aspect, there is a separate source degeneration inductor 306, 308 for each of the two current paths, thereby facilitating tuning of one current path without affecting the other current path. In a third novel aspect, the cancel current path and/or a deboost current path is programmably disabled to reduce power consumption and improve a noise figure in operational modes that do not require high linearity.
摘要翻译：要解决的问题：提供具有非常高的三阶输入截点（IIP3）以及低噪声因子（NF），高增益和低电流消耗的低噪声放大器（LNA）。解决方案：修改的导数叠加（DS）低噪声放大器（LNA）222包括主电流路径320和消除电流路径322.消除路径中的三阶失真用于消除在第主要路径在一个新颖的方面中，对于两个电流路径中的每一个存在单独的源极退化电感器306,308，从而便于调谐一个电流路径而不影响另一个电流路径。在第三个新颖的方面，消除电流路径和/或去桥电流路径可编程地被禁用以降低功耗并改善不需要高线性度的操作模式中的噪声系数。版权所有（C）2013，JPO＆INPIT

6. 发明专利

JP2013081200A Multi-linearity mode lna having deboost current path 有权
标题翻译：具有DEBOOST电流路径的多线性模式
公开(公告)号：JP2013081200A
公开(公告)日：2013-05-02
申请号：JP2012256110
申请日：2012-11-22
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： CHANG LI-CHUNG
IPC分类号： H03F1/32 , H03F1/02 , H03F1/22 , H03F1/26 , H03F3/193
CPC分类号： H03F1/3205 , H03F1/223 , H03F1/3252 , H03F3/72 , H03F2200/492
摘要： PROBLEM TO BE SOLVED: To provide an LNA having a very high third-order input intercept point (IIP3) as well as high gain and a low current consumption.SOLUTION: An LNA 222 includes a main field effect transistor (FET) 302, a cancel FET 304, a first source degeneration inductor 306, a second source degeneration inductor 308, a cascode transistor 310, and an LNA load 312. The LNA load 312 is an LC tank circuit that includes an inductor 314 and a capacitor 316 coupled in parallel.
摘要翻译：要解决的问题：提供具有非常高的三阶输入截点（IIP3）以及高增益和低电流消耗的LNA。解决方案：LNA 222包括主场效应晶体管（FET）302，取消FET 304，第一源极退变电感器306，第二源极退变电感器308，共源共栅晶体管310和LNA负载312。 LNA负载312是LC谐振电路，其包括并联耦合的电感器314和电容器316。版权所有（C）2013，JPO＆INPIT

7. 发明专利

CA2947886C CARRIER AGGREGATION AMPLIFIER WITH DUAL GAIN CONTROL 未知
公开(公告)号：CA2947886C
公开(公告)日：2018-03-06
申请号：CA2947886
申请日：2015-05-12
申请人： QUALCOMM INC
发明人： YOUSSEF AHMED ABDEL MONEM , ABDEL GHANY EHAB AHMED SOBHY , CHANG LI-CHUNG
IPC分类号： H03G3/00 , H03F3/189 , H03G1/00 , H04B1/00 , H04B7/185
摘要： An apparatus includes a first amplification stage configured to amplify a first carrier signal and a second amplification stage configured to amplify a second carrier signal. The first amplification stage is direct-current (DC) coupled to the second amplification stage. First circuitry is coupled to the first amplification stage and configured to control a first gain of the first amplification stage. The first circuitry includes a first gain control transistor configured to selectively divert a first bleed current from a first output of the first amplification stage. Second circuitry is coupled to the second amplification stage and configured to control a second gain of the second amplification stage independently of the first gain. The second circuitry includes a second gain control transistor configured to selectively divert a second bleed current from a second output of the second amplification stage.

8. 发明专利

CA2990200A1 CASCADED SWITCH BETWEEN PLURALITIES OF LNAS 未知
公开(公告)号：CA2990200A1
公开(公告)日：2017-02-16
申请号：CA2990200
申请日：2016-07-01
申请人： QUALCOMM INC
发明人： CHANG LI-CHUNG , DAI LIANG , GUDEM PRASAD SRINIVASA SIVA
IPC分类号： H04B1/00
摘要： An apparatus includes a first plurality of low noise amplifiers (LNAs) and a cascaded switch configured to route outputs of the first plurality of LNAs to a second plurality of LNAs.

9. 发明专利

CA2947886A1 CARRIER AGGREGATION AMPLIFIER WITH DUAL GAIN CONTROL 未知
公开(公告)号：CA2947886A1
公开(公告)日：2015-11-26
申请号：CA2947886
申请日：2015-05-12
申请人： QUALCOMM INC
发明人： YOUSSEF AHMED ABDEL MONEM , ABDEL GHANY EHAB AHMED SOBHY , CHANG LI-CHUNG
IPC分类号： H03G3/00 , H03F3/189 , H03G1/00 , H04B1/00 , H04B7/185
摘要： An apparatus includes a first amplification stage configured to amplify a first carrier signal and a second amplification stage configured to amplify a second carrier signal. The first amplification stage is direct-current (DC) coupled to the second amplification stage. First circuitry is coupled to the first amplification stage and configured to control a first gain of the first amplification stage. The first circuitry includes a first gain control transistor configured to selectively divert a first bleed current from a first output of the first amplification stage. Second circuitry is coupled to the second amplification stage and configured to control a second gain of the second amplification stage independently of the first gain. The second circuitry includes a second gain control transistor configured to selectively divert a second bleed current from a second output of the second amplification stage.

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