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1. 发明授权

EP1402631B1 DIRECT CONVERSION RECEIVER ARCHITECTURE 有权
标题翻译：零差
公开(公告)号：EP1402631B1
公开(公告)日：2011-05-18
申请号：EP02709570.2
申请日：2002-02-15
申请人： QUALCOMM INCORPORATED
发明人： LI, Tao , HOLENSTEIN, Christian , KANG, Injup , WALKER, Brett, C. , PETERZELL, Paul, E. , CHALLA, Raghu , SEVERSON, Matthew, L. , RAGHUPATHY, Arun , SIH, Gilbert C.
IPC分类号： H03G3/30 , H03D3/00 , H04B1/40
CPC分类号： H03G3/3078 , H03G3/3068 , H03G3/3089
摘要： A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus.

2. 发明授权

EP2820761B1 SINGLE-CHIP SIGNAL SPLITTING CARRIER AGGREGATION RECEIVER ARCHITECTURE 有权
标题翻译：单芯片接收体结构的一个分枝信号载波聚合
公开(公告)号：EP2820761B1
公开(公告)日：2016-05-04
申请号：EP13714048.9
申请日：2013-03-01
申请人： Qualcomm Incorporated
发明人： GUDEM, Prasad Srinivasa Siva , SAHOTA, Gurkanwal Singh , CHANG, Li-Chung , HOLENSTEIN, Christian , BOSSU, Frederic
IPC分类号： H04B1/00 , H04B7/04
CPC分类号： H04B1/0057 , H04B7/04

3. 发明公开

EP2949039A1 SINGLE-INPUT MULTIPLE-OUTPUT AMPLIFIERS WITH INDEPENDENT GAIN CONTROL PER OUTPUT 审中-公开
标题翻译：为每个输出的单输入多输出和独立增益控制放大器
公开(公告)号：EP2949039A1
公开(公告)日：2015-12-02
申请号：EP14702732.0
申请日：2014-01-22
申请人： Qualcomm Incorporated
发明人： HOLENSTEIN, Christian , TASIC, Aleksandar Miodrag , CHANG, Li-Chung , HE, Allen
IPC分类号： H03F1/02 , H03F1/22 , H03F3/193 , H03F3/68 , H03F3/72
CPC分类号： H04B1/16 , H03F1/0277 , H03F1/223 , H03F3/193 , H03F3/68 , H03F3/72 , H03F2200/111 , H03F2200/294 , H03F2200/489 , H03F2200/492 , H03F2200/541 , H03G3/30 , H03G3/3052 , H03G5/24 , H04W88/06
摘要： Amplifiers with multiple outputs and separate gain control per output are disclosed. In an exemplary design, an apparatus (e.g., a wireless device or an integrated circuit) may include first and second amplifier circuits. The first amplifier circuit may receive and amplify an input radio frequency (RF) signal based on a first variable gain and provide a first amplified RF signal. The second amplifier circuit may receive and amplify the input RF signal based on a second variable gain and provide a second amplified RF signal. The input RF signal may include a plurality of transmitted signals being received by the wireless device. The first variable gain may be adjustable independently of the second variable gain. Each variable gain may be set based on the received power level of at least one transmitted signal being received by the wireless device.

4. 发明公开

EP2446537A1 INTERFERENCE REDUCTION USING VARIABLE DIGITAL-TO-ANALOG CONVERTER (DAC) SAMPLING RATES 有权
标题翻译：具有可变样品干扰减轻数字 - 模拟转换器（DAC）
公开(公告)号：EP2446537A1
公开(公告)日：2012-05-02
申请号：EP10726774.2
申请日：2010-06-24
申请人： QUALCOMM Incorporated
发明人： SAMPATH, Hemanth , HOLENSTEIN, Christian , LIN, Jeremy, Huei , KADOUS, Tamer, A. , MARRA, Thomas, D.
IPC分类号： H03M1/66 , H04B1/00
CPC分类号： H03M1/66 , H04B1/005
摘要： A method for interference reduction is described. A sampling frequency is selected for a digital-to-analog converter (DAC) so that images within a DAC output signal do not interfere with one or more receivers. A sample rate is adjusted of an input signal that is provided to the DAC to match the sampling frequency for the DAC.

5. 发明授权

EP2248256B1 LNA HAVING A POST-DISTORTION MODE AND A HIGH-GAIN MODE 有权
标题翻译： LNA具有失真模式和高增益模式
公开(公告)号：EP2248256B1
公开(公告)日：2011-09-28
申请号：EP09708122.8
申请日：2009-02-06
申请人： QUALCOMM Incorporated
发明人： HOLENSTEIN, Christian , DENG, Junxiong , KIM, Namsoo
IPC分类号： H03F3/45 , H03F3/193 , H03F1/32 , H03G1/00
CPC分类号： H03F3/193 , H03F1/3205 , H03F1/3211 , H03F3/45188 , H03F2200/294 , H03F2200/357 , H03F2200/451 , H03F2203/45246 , H03F2203/45318 , H03F2203/45386 , H03F2203/45396 , H03G1/0029
摘要： A differential low noise amplifier (LNA) is operable in a selectable one of two modes. The LNA includes a first transistor (204), a second transistor (205), a third transistor (206) and a fourth transistor. In the first mode (PDC mode), the four transistors are configured to operate as a post-distortion cancellation (PDC) LNA. The third (206) and fourth (207) transistors operate as cancel transistors that improve linearity, but reduce LNA gain somewhat. In the second mode (high gain mode), the third (206) and fourth (207) transistors are configured so that amplified versions of the LNA input signal that they output are added to amplified versions of the LNA input signal that are output by the first and second main transistors (204, 205), resulting in increased gain. Multiplexing circuits are provided within the LNA so that the LNA is configurable into a selectable one of the two modes by controlling a digital mode control signal supplied to the LNA.
摘要翻译：差分低噪声放大器（LNA）可在两种模式中选择一种模式下工作。 LNA包括第一晶体管（204），第二晶体管（205），第三晶体管（206）和第四晶体管。在第一模式（PDC模式）中，四个晶体管被配置为作为失真后消除（PDC）LNA来操作。第三（206）和第四（207）晶体管用作消除晶体管，其改善线性度，但稍微降低LNA增益。在第二模式（高增益模式）中，第三（206）和第四（207）晶体管被配置为使得它们输出的LNA输入信号的放大版本被添加到LNA输入信号的放大版本，第一和第二主晶体管（204,205），导致增益增加。在LNA内提供多路复用电路，使得通过控制提供给LNA的数字模式控制信号，可将LNA配置为两种模式中的可选择的一种。

6. 发明公开

EP2342831A1 METHOD AND APPARATUS FOR POWER SAVING IN A WIRELESS COMMUNICATION SYSTEM 有权
标题翻译：方法和设备输出功率是在无线通信系统
公开(公告)号：EP2342831A1
公开(公告)日：2011-07-13
申请号：EP09748171.7
申请日：2009-10-09
申请人： QUALCOMM Incorporated
发明人： PAN, Chengzhi , BURKE, Joseph Patrick , HOLENSTEIN, Christian
IPC分类号： H04B1/16
CPC分类号： H04W52/02 , H04W48/16 , H04W52/0209 , H04W52/0235 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/22 , Y02D70/23
摘要： The described apparatus and methods may include a receiver configured to receive a control signal, and a controller configured to regulate power consumption of the receiver during intervals of less than one radio frame based on the control signals. The controller may also be configured to regulate power consumption of a transmitter during intervals of less than one radio frame based on the control signal.

7. 发明授权

EP2817887B1 WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS 有权
公开(公告)号：EP2817887B1
公开(公告)日：2019-01-02
申请号：EP13708592.4
申请日：2013-02-22
申请人： Qualcomm Incorporated
发明人： LANE, Mark, Vernon , LEE, Chang-Ho , HOLENSTEIN, Christian , RANJAN, Mahim , SAMPATH, Praveen-Kumar , BOSSU, Frederic , VERMA, Sumit , SAMPSON, Wesley, Alan
IPC分类号： H04B1/04 , H04W88/06

8. 发明公开

EP3205027A1 MULTIPLEX MODULES FOR CARRIER AGGREGATION RECEIVERS 有权
标题翻译：多载波模块载波聚合接收机
公开(公告)号：EP3205027A1
公开(公告)日：2017-08-16
申请号：EP15717311.3
申请日：2015-03-23
申请人： Qualcomm Incorporated
发明人： TASIC, Aleksandar Miodrag , NARATHONG, Chiewcharn , HOLENSTEIN, Christian , PAN, Dongling , TANG, Yiwu , RANGARAJAN, Rajagopalan , LEUNG, Lai Kan
IPC分类号： H04B1/00 , H03F1/22
CPC分类号： H04L27/2653 , H03F1/223 , H03F3/193 , H03F3/245 , H04B1/0064 , H04L45/16 , H04L45/245
摘要： Multiplex modules for use in carrier aggregation receivers are disclosed. In an exemplary embodiment, an apparatus includes an LNA multiplexer configured to receive a plurality of RF signals at a plurality of input terminals and to combine the RF signals into a combined RF signal that is output from an output terminal. The apparatus also includes an LNA demultiplexer configured to receive the combined RF signal at an input port that is connected to the output terminal and to distribute the combined RF signal to a plurality of output ports.
摘要翻译：公开了用于载波聚合接收机的多路复用模块。在一个示例性实施例中，一种装置包括LNA多路复用器，其被配置为在多个输入端子处接收多个RF信号并且将这些RF信号组合成从输出端子输出的组合RF信号。该装置还包括LNA解复用器被配置为在连接到输出端子的输入端口处接收组合的RF信号并且将组合的RF信号分配到多个输出端口。

9. 发明公开

EP2308190A2 METHODS AND APPARATUS FOR IMPLEMENTING PHASE ROTATION AT BASEBAND FREQUENCY FOR TRANSMIT DIVERSITY 审中-公开
标题翻译： VERFAHREN UND VORRICHTUNG ZUR PHASENVERSCHIEBUNG BEI BASISBANDFREQUENZFÜRÜBERTRAGUNGSDIVERSITÄT
公开(公告)号：EP2308190A2
公开(公告)日：2011-04-13
申请号：EP09791097.0
申请日：2009-08-03
申请人： QUALCOMM Incorporated
发明人： TANG, Yiwu , HOLENSTEIN, Christian , CASSIA, Marco , RANJAN, Mahim
IPC分类号： H04L1/06 , H04L1/08
CPC分类号： H04B7/0682 , H04L1/0618 , H04L1/08
摘要： An apparatus for implementing phase rotation at baseband frequency for transmit diversity may include a primary transmit signal path and a diversity transmit signal path. Both the primary transmit signal path and the diversity transmit signal path may receive a primary transmit signal. A signal selector within the diversity transmit signal path may perform phase rotation with respect to the primary transmit signal while the primary transmit signal is at a baseband frequency, thereby producing a diversity transmit signal.
摘要翻译：用于实现用于发射分集的基带频率处的相位旋转的装置可以包括主发射信号路径和分集发射信号路径。主发射信号路径和分集发射信号路径都可以接收主发射信号。分集发射信号路径内的信号选择器可以在主发射信号处于基带频率时相对于主发射信号执行相位旋转，从而产生分集发射信号。

10. 发明公开

EP1929626A1 DC OFFSET CANCELLATION CIRCUIT FOR A RECEIVER 审中-公开
标题翻译：接收器使用偏移补偿
公开(公告)号：EP1929626A1
公开(公告)日：2008-06-11
申请号：EP06816070.4
申请日：2006-09-28
申请人： Qualcomm Incorporated
发明人： SUN, Runhua , HOLENSTEIN, Christian , JAFFEE, James
IPC分类号： H03D3/00
CPC分类号： H03D3/008
摘要： Techniques for cancelling DC offset are described. A DC offset cancellation circuit in a receiver cancels DC offsets caused by leaked LO (local oscillator) signals from a LO signal generator. The receiver first calibrates itself by using the DC offset cancellation circuit during a transmit mode. During the calibration, the DC offset cancellation circuit stores the DC offset voltage signal caused by the leaked LO signals. During a receiving mode when the receiver is receiving a signal, the receiver subtracts the stored DC offset voltage signal from the received signal to cancel the DC offsets caused by leaked LO signals.

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