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1. 发明授权

US09154357B2 Multiple-input multiple-output (MIMO) low noise amplifiers for carrier aggregation 有权
标题翻译：用于载波聚合的多输入多输出（MIMO）低噪声放大器
公开(公告)号：US09154357B2
公开(公告)日：2015-10-06
申请号：US13593764
申请日：2012-08-24
申请人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
发明人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
IPC分类号： H04B1/18 , H04L27/26 , H03G3/20 , H03F1/22 , H03F3/193 , H03F3/68 , H03F3/72
CPC分类号： H04L27/2647 , H03F1/223 , H03F3/193 , H03F3/68 , H03F3/72 , H03G3/20
摘要： Multiple-input multiple-output (MIMO) low noise amplifiers (LNAs) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a MIMO LNA having a plurality of gain circuits, a drive circuit, and a plurality of load circuits. The gain circuits receive at least one input radio frequency (RF) signal and provide at least one amplified RF signal. Each gain circuit receives and amplifies one input RF signal and provides one amplified RF signal when the gain circuit is enabled. The at least one input RF signal include transmissions sent on multiple carriers at different frequencies to the wireless device. The drive circuit receives the at least one amplified RF signal and provides at least one drive RF signal. The load circuits receive the at least one drive RF signal and provide at least one output RF signal.
摘要翻译：公开了支持载波聚合的多输入多输出（MIMO）低噪声放大器（LNA）。在示例性设计中，装置（例如，无线装置，集成电路等）包括具有多个增益电路的MIMO LNA，驱动电路和多个负载电路。增益电路接收至少一个输入射频（RF）信号并提供至少一个放大的RF信号。当增益电路使能时，每个增益电路接收并放大一个输入RF信号并提供一个放大的RF信号。所述至少一个输入RF信号包括以不同频率的多个载波发送到无线设备的传输。驱动电路接收至少一个放大的RF信号并提供至少一个驱动RF信号。负载电路接收至少一个驱动RF信号并提供至少一个输出RF信号。

2. 发明申请

US20130316670A1 MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) LOW NOISE AMPLIFIERS FOR CARRIER AGGREGATION 有权
标题翻译：多输入多输出（MIMO）低噪声放大器，用于载波聚合
公开(公告)号：US20130316670A1
公开(公告)日：2013-11-28
申请号：US13593764
申请日：2012-08-24
申请人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
发明人： Aleksandar Miodrag Tasic , Anosh Bomi Davierwalla , Berke Cetinoneri , Jusung Kim , Chiewcharn Narathong , Klaas van Zalinge , Gurkanwal Singh Sahota , James Ian Jaffee
IPC分类号： H03G3/20
CPC分类号： H04L27/2647 , H03F1/223 , H03F3/193 , H03F3/68 , H03F3/72 , H03G3/20
摘要： Multiple-input multiple-output (MIMO) low noise amplifiers (LNAs) supporting carrier aggregation are disclosed. In an exemplary design, an apparatus (e.g., a wireless device, an integrated circuit, etc.) includes a MIMO LNA having a plurality of gain circuits, a drive circuit, and a plurality of load circuits. The gain circuits receive at least one input radio frequency (RF) signal and provide at least one amplified RF signal. Each gain circuit receives and amplifies one input RF signal and provides one amplified RF signal when the gain circuit is enabled. The at least one input RF signal include transmissions sent on multiple carriers at different frequencies to the wireless device. The drive circuit receives the at least one amplified RF signal and provides at least one drive RF signal. The load circuits receive the at least one drive RF signal and provide at least one output RF signal.
摘要翻译：公开了支持载波聚合的多输入多输出（MIMO）低噪声放大器（LNA）。在示例性设计中，装置（例如，无线装置，集成电路等）包括具有多个增益电路的MIMO LNA，驱动电路和多个负载电路。增益电路接收至少一个输入射频（RF）信号并提供至少一个放大的RF信号。当增益电路使能时，每个增益电路接收并放大一个输入RF信号并提供一个放大的RF信号。所述至少一个输入RF信号包括以不同频率的多个载波发送到无线设备的传输。驱动电路接收至少一个放大的RF信号并提供至少一个驱动RF信号。负载电路接收至少一个驱动RF信号并提供至少一个输出RF信号。

3. 发明授权

US08929840B2 Local oscillator buffer and mixer having adjustable size 有权
标题翻译：具有可调大小的本地振荡器缓冲器和混频器
公开(公告)号：US08929840B2
公开(公告)日：2015-01-06
申请号：US12209164
申请日：2008-09-11
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
IPC分类号： H04B1/02 , H04B1/06 , H04B7/00 , H04B1/26 , H03D7/16 , H03D7/14 , H03G3/30
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0025 , H03G3/3052
摘要： Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver or transmitter operates in a low gain mode. In an exemplary embodiment, LO buffer and mixer sizes are increased and decreased in lock step. Circuit topologies and control schemes for specific exemplary embodiments of LO buffers and mixers having adjustable size are disclosed.
摘要翻译：公开了本地振荡器（LO）缓冲器和混频器的可选尺寸。在示例性实施例中，当接收机或发射机以高增益模式工作时，可以增加LO缓冲器和/或混频器大小，而当接收机或发射机以低增益模式工作时，LO缓冲器和/或混频器大小可能会减小。在示例性实施例中，锁定步骤中LO缓冲器和混合器尺寸增加和减小。公开了具有可调节尺寸的LO缓冲器和混合器的具体示例性实施例的电路拓扑和控制方案。

4. 发明申请

US20090075620A1 LOCAL OSCILLATOR BUFFER AND MIXER HAVING ADJUSTABLE SIZE 有权
标题翻译：本地振荡器缓冲器和具有可调整尺寸的混频器
公开(公告)号：US20090075620A1
公开(公告)日：2009-03-19
申请号：US12209164
申请日：2008-09-11
申请人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
发明人： Sankaran Aniruddhan , Chiewcharn Narathong , Sriramgopal Sridhara , Ravi Sridhara , Gurkanwal Singh Sahota , Frederic Bossu , Ojas M. Choksi
IPC分类号： H04B1/26
CPC分类号： H03D7/166 , H03D7/1441 , H03D7/1483 , H03D7/165 , H03D2200/0025 , H03G3/3052
摘要： Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an exemplary embodiment, LO buffer and/or mixer size may be increased when a receiver or transmitter operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver or transmitter operates in a low gain mode. In an exemplary embodiment, LO buffer and mixer sizes are increased and decreased in lock step. Circuit topologies and control schemes for specific exemplary embodiments of LO buffers and mixers having adjustable size are disclosed.
摘要翻译：公开了本地振荡器（LO）缓冲器和混频器的可选尺寸。在示例性实施例中，当接收机或发射机以高增益模式工作时，可以增加LO缓冲器和/或混频器大小，而当接收机或发射机以低增益模式工作时，LO缓冲器和/或混频器大小可能会减小。在示例性实施例中，锁定步骤中LO缓冲器和混合器尺寸增加和减小。公开了具有可调节尺寸的LO缓冲器和混合器的具体示例性实施例的电路拓扑和控制方案。

5. 发明授权

US08090332B2 Tracking filter for a receiver 有权
标题翻译：跟踪接收器的过滤器
公开(公告)号：US08090332B2
公开(公告)日：2012-01-03
申请号：US11955118
申请日：2007-12-12
申请人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
发明人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
IPC分类号： H04B1/10 , H04B1/26 , H03D1/00
CPC分类号： H04B1/18
摘要： A tracking filter for attenuating out-of-band signals and adjacent channel signals in a receiver is described. In one exemplary design, an apparatus includes a tracking filter, an LNA, and a downconverter. The tracking filter includes a summer, a filter, and an upconverter. The summer subtracts a feedback signal from an input signal and provides a first signal. The LNA amplifies the first signal and provides a second signal. The downconverter frequency downconverts the second signal and provides an output signal. The filter filters (e.g., differentiates) the output signal and provides a third signal. The filter blocks a desired signal and passes out-of-band signal components. The upconverter frequency upconverts the third signal and provides a fourth signal from which the feedback signal is derived. The tracking filter has an equivalent bandpass filter response and a variable center frequency determined based on the frequency of the desired signal.
摘要翻译：描述了用于衰减接收机中的带外信号和相邻信道信号的跟踪滤波器。在一个示例性设计中，装置包括跟踪滤波器，LNA和下变频器。跟踪过滤器包括夏季，过滤器和上变频器。夏季从输入信号中减去反馈信号并提供第一信号。 LNA放大第一个信号并提供第二个信号。下变频器降频转换第二信号并提供输出信号。滤波器（例如，微分）输出信号并提供第三信号。滤波器阻挡所需的信号并传出带外信号分量。上变频器对第三信号进行上变频，并提供第四信号，从中得到反馈信号。跟踪滤波器具有等效的带通滤波器响应和基于期望信号的频率确定的可变中心频率。

6. 发明申请

US20090156152A1 TRACKING FILTER FOR A RECEIVER 有权
标题翻译：跟踪接收器的过滤器
公开(公告)号：US20090156152A1
公开(公告)日：2009-06-18
申请号：US11955118
申请日：2007-12-12
申请人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
发明人： Gurkanwal Singh Sahota , Chiewcharn Narathong , Ravi Sridhara
IPC分类号： H04B1/10 , H04B1/16
CPC分类号： H04B1/18
摘要： A tracking filter for attenuating out-of-band signals and adjacent channel signals in a receiver is described. In one exemplary design, an apparatus includes a tracking filter, an LNA, and a downconverter. The tracking filter includes a summer, a filter, and an upconverter. The summer subtracts a feedback signal from an input signal and provides a first signal. The LNA amplifies the first signal and provides a second signal. The downconverter frequency downconverts the second signal and provides an output signal. The filter filters (e.g., differentiates) the output signal and provides a third signal. The filter blocks a desired signal and passes out-of-band signal components. The upconverter frequency upconverts the third signal and provides a fourth signal from which the feedback signal is derived. The tracking filter has an equivalent bandpass filter response and a variable center frequency determined based on the frequency of the desired signal.
摘要翻译：描述了用于衰减接收机中的带外信号和相邻信道信号的跟踪滤波器。在一个示例性设计中，装置包括跟踪滤波器，LNA和下变频器。跟踪过滤器包括夏季，过滤器和上变频器。夏季从输入信号中减去反馈信号并提供第一信号。 LNA放大第一个信号并提供第二个信号。下变频器降频转换第二信号并提供输出信号。滤波器（例如，微分）输出信号并提供第三信号。滤波器阻挡所需的信号并传出带外信号分量。上变频器对第三信号进行上变频，并提供第四信号，从中得到反馈信号。跟踪滤波器具有等效的带通滤波器响应和基于期望信号的频率确定的可变中心频率。

7. 发明授权

US08331485B2 Spur cancellation in a digital baseband transmit signal using cancelling tones 有权
标题翻译：使用取消音调的数字基带发射信号中的支线消除
公开(公告)号：US08331485B2
公开(公告)日：2012-12-11
申请号：US12822930
申请日：2010-06-24
申请人： Yiwu Tang , Chiewcharn Narathong
发明人： Yiwu Tang , Chiewcharn Narathong
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H04L25/03343 , H03F1/32 , H03F3/195 , H03F3/24 , H03F2200/411 , H03F2200/451 , H03F2200/534 , H04L27/368
摘要： A method for reducing spurs within a transmit signal is disclosed. A cancelling tone is determined. The cancelling tone is added to a baseband transmit signal in the digital domain to obtain a baseband transmit signal with cancelling tone. A spur in the transmit signal is reduced using the cancelling tone. The transmit signal with the reduced spur is transmitted using an antenna.
摘要翻译：公开了一种用于减少发射信号内的杂散的方法。确定取消音。将抵消音增加到数字域中的基带发送信号，以获得具有消除音的基带发送信号。发送信号中的杂散使用消除音降低。具有减小的杂散的发射信号使用天线发射。

8. 发明授权

US08310277B2 High linear fast peak detector 有权
标题翻译：高线性快速峰值检测器
公开(公告)号：US08310277B2
公开(公告)日：2012-11-13
申请号：US12718806
申请日：2010-03-05
申请人： Wenjun Su , Aristotele Hadjichristos , Marco Cassia , Chiewcharn Narathong
发明人： Wenjun Su , Aristotele Hadjichristos , Marco Cassia , Chiewcharn Narathong
IPC分类号： H03K5/153
CPC分类号： G01R19/04
摘要： A high linear fast peak detector having a variable bias current and/or a variable bias voltage is described. In an exemplary design, the peak detector includes a transistor, a variable current source, a capacitor, and a feedback circuit. The transistor receives the input signal and provides a source current. The variable current source receives the input signal, provides high bias current when the input signal is low, and provides low bias current when the input signal is high. The capacitor is charged by the source current when the input signal is high and is discharged by the high bias current when the input signal is low. The feedback circuit receives a detected signal from the capacitor and provides higher bias voltage for the transistor when the input signal is high, which results in higher source current from the transistor.
摘要翻译：描述具有可变偏置电流和/或可变偏置电压的高线性快速峰值检测器。在示例性设计中，峰值检测器包括晶体管，可变电流源，电容器和反馈电路。晶体管接收输入信号并提供源极电流。可变电流源接收输入信号，当输入信号为低电平时提供高偏置电流，并且当输入信号为高电平时提供低偏置电流。当输入信号为高电平时，电容器由电源电流充电，当输入信号为低电平时，电容器被高偏置电流放电。当输入信号为高电平时，反馈电路接收来自电容器的检测信号，并为晶体管提供较高的偏置电压，这导致来自晶体管的较高的源极电流。

9. 发明申请

US20120082151A1 RECONFIGURABLE LOCAL OSCILLATOR FOR OPTIMAL NOISE PERFORMANCE IN A MULTI-STANDARD TRANSCEIVER 有权
标题翻译：可重构的本地振荡器，用于多标准收发器中的最佳噪声性能
公开(公告)号：US20120082151A1
公开(公告)日：2012-04-05
申请号：US12898104
申请日：2010-10-05
申请人： Li Liu , Chiewcharn Narathong , Prasad Srinivasa Siva Gudem
发明人： Li Liu , Chiewcharn Narathong , Prasad Srinivasa Siva Gudem
IPC分类号： H04B1/38 , H04B7/216
CPC分类号： H03L7/1976 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03L7/093 , H03L7/099 , H03L7/104 , H04B1/0057
摘要： A transceiver for multi-standard operation (usable, for example, to communicate signals both of a first wireless communication standard and of a second wireless communication standard) has a mixer that receives a local oscillator signal generated by a local oscillator. A PLL of the local oscillator involves a VCO, a digitally programmable analog loop filter, a digitally programmable VCO supply voltage circuit, and a digitally programmable VCO varactor bias control circuit. In one aspect, the bandwidth of the analog loop filter is adjusted depending on the communication standard of the signal being communicated. In other aspects, the VCO supply voltage circuit and/or the varactor bias control circuit are configured in different ways to optimize PLL performance depending on the communication standard of the signal being communicated.
摘要翻译：用于多标准操作的收发器（例如可用于传送第一无线通信标准和第二无线通信标准的信号）具有接收由本地振荡器产生的本地振荡器信号的混合器。本地振荡器的PLL包括VCO，数字可编程模拟环路滤波器，数字可编程VCO电源电压电路和数字可编程VCO变容二极管偏置控制电路。在一个方面，模拟环路滤波器的带宽根据正在传送的信号的通信标准来调节。在其他方面，VCO电源电压电路和/或变容二极管偏置控制电路以不同的方式配置，以根据正在通信的信号的通信标准优化PLL性能。

10. 发明申请

US20120081188A1 WIDEBAND TEMPERATURE COMPENSATED RESONATOR AND WIDEBAND VCO 有权
标题翻译：宽带温度补偿谐振器和宽带VCO
公开(公告)号：US20120081188A1
公开(公告)日：2012-04-05
申请号：US12897918
申请日：2010-10-05
申请人： Li Liu , Chiewcharn Narathong
发明人： Li Liu , Chiewcharn Narathong
IPC分类号： H03B5/12 , H01L21/20 , H03J3/06
CPC分类号： H03L1/025 , H03B5/04 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03B5/1265 , H03L1/023 , H03L7/099 , H03L7/104 , H03L7/1976
摘要： A resonator of a VCO includes a fine tuning main varactor circuit, an auxiliary varactor circuit, and a coarse tuning capacitor bank circuit coupled in parallel with an inductance. The main varactor circuit includes a plurality of circuit portions that can be separately disabled. Within each circuit portion is a multiplexing circuit that supplies a selectable one of either a fine tuning control signal (FTAVCS) or a temperature compensation control signal (TCAVCS) onto a varactor control node within the circuit portion. If the circuit portion is enabled then the FTAVCS is supplied onto the control node so that the circuit portion is used for fine tuning. If the circuit portion is disabled then the TCAVCS is supplied onto the control node so that the circuit portion is used to combat VCO frequency drift as a function of temperature. How the voltage of the TCAVCS varies with temperature is digitally programmable.
摘要翻译： VCO的谐振器包括微调主变容二极管电路，辅助变容二极管电路和与电感并联耦合的粗调电容器组电路。主变容二极管包括多个电路部分，其可以单独禁用。在每个电路部分内是多路复用电路，其将微调控制信号（FTAVCS）或温度补偿控制信号（TCAVCS）中的可选择的一个提供到电路部分内的变容二极管控制节点上。如果电路部分被使能，则FTAVCS被提供到控制节点上，使得电路部分被用于微调。如果电路部分被禁用，则TCAVCS被提供到控制节点上，使得电路部分用于抵抗作为温度的函数的VCO频率漂移。 TCAVCS的电压如何随温度而变化是可数字编程的。

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