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1. 发明授权

US09882602B2 Global navigation satellite system receiver with filter bypass mode for improved sensitivity 有权
公开(公告)号：US09882602B2
公开(公告)日：2018-01-30
申请号：US13172653
申请日：2011-06-29
申请人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
发明人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
IPC分类号： H04B1/3805 , H04B1/525
CPC分类号： H04B1/525 , H04B1/3805
摘要： A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.

2. 发明授权

US09154240B2 Precision power/peak detector using on-chip reference power source 有权
标题翻译：精密功率/峰值检测器采用片上参考电源
公开(公告)号：US09154240B2
公开(公告)日：2015-10-06
申请号：US13587604
申请日：2012-08-16
申请人： Bhushan Shanti Asuri
发明人： Bhushan Shanti Asuri
IPC分类号： H04B17/00 , H04B17/10 , H04B17/14 , H03G3/30
CPC分类号： H04B17/101 , H03G3/3042 , H04B17/14
摘要： A wireless device is described. The wireless device includes a high precision power/peak detector. The wireless device also includes a reference signal source. The high precision power/peak detector and the reference signal source are on an integrated circuit. The reference signal source provides a precision reference signal used to calibrate the high precision power/peak detector.
摘要翻译：描述无线设备。无线设备包括高精度功率/峰值检测器。无线设备还包括参考信号源。高精度功率/峰值检测器和参考信号源位于集成电路上。参考信号源提供用于校准高精度功率/峰值检测器的精确参考信号。

3. 发明授权

US08670797B2 Multi-antenna wireless device with power amplifiers having different characteristics 有权
标题翻译：具有不同特性的功率放大器的多天线无线设备
公开(公告)号：US08670797B2
公开(公告)日：2014-03-11
申请号：US13253003
申请日：2011-10-04
申请人： Bhushan Shanti Asuri , Yu Zhao
发明人： Bhushan Shanti Asuri , Yu Zhao
IPC分类号： H04M1/00
CPC分类号： H04B1/406 , H04B1/0064 , H04B1/0483
摘要： A wireless device with power amplifiers having different characteristics to support transmission on multiple antennas is disclosed. These power amplifiers may have different gain, different maximum output power levels, etc. in order to meet requirements of different wireless systems. In an exemplary design, an apparatus includes first and second power amplifiers having different characteristics. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna. The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna, e.g., in a MIMO mode or a transmit diversity mode. Only the first or second power amplifier amplifies another input signal and provides another output signal to the first antenna, e.g., in a CDMA mode or a GSM mode.
摘要翻译：具有功率放大器的无线设备具有不同的特性以支持多个天线上的传输。这些功率放大器可能具有不同的增益，不同的最大输出功率等级，以满足不同无线系统的要求。在示例性设计中，装置包括具有不同特征的第一和第二功率放大器。第一功率放大器放大第一输入信号并提供用于第一天线的第一输出信号。第二功率放大器放大第一输入信号或第二输入信号，并且例如以MIMO模式或发射分集模式为第二天线提供第二输出信号。只有第一或第二功率放大器放大另一输入信号，并且例如以CDMA模式或GSM模式向第一天线提供另一输出信号。

4. 发明申请

US20130003783A1 GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER WITH FILTER BYPASS MODE FOR IMPROVED SENSITIVITY 有权
标题翻译：全球导航卫星系统接收器，带有过滤器旁路模式，提高灵敏度
公开(公告)号：US20130003783A1
公开(公告)日：2013-01-03
申请号：US13172653
申请日：2011-06-29
申请人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
发明人： Prasad Srinivasa Siva Gudem , Liang Zhao , I-Hsiang Lin , Zhijie Xiong , Bhushan Shanti Asuri , Aristotele Hadjichristos
IPC分类号： H04B1/707
CPC分类号： H04B1/525 , H04B1/3805
摘要： A global navigation satellite system receiver with filter bypass mode for improved sensitivity is disclosed. In an aspect, an apparatus is provided that includes a non-bypass signal path coupled to a receiver, the non-bypass signal path comprising a filter. The apparatus also includes a bypass signal path coupled to the receiver, the bypass signal path configure to bypass the filter, and a switch to couple an antenna to the non-bypass signal path during time intervals when signals transmitted by an unrelated local transmitter are transmitted with a signal power that exceeds a selected threshold, and to couple the antenna to the bypass signal path during other time intervals.
摘要翻译：公开了一种具有滤波器旁路模式以提高灵敏度的全球导航卫星系统接收机。在一方面，提供一种装置，其包括耦合到接收器的非旁路信号路径，非旁路信号路径包括滤波器。该装置还包括耦合到接收器的旁路信号路径，配置为旁路滤波器的旁路信号路径以及在由不相关的本地发射机发送的信号被发送的时间间隔期间将天线耦合到非旁路信号路径的开关信号功率超过所选阈值，并且在其它时间间隔期间将天线耦合到旁路信号路径。

5. 发明授权

US08755456B2 Waveform scaling in wireless transmitters 失效
标题翻译：无线发射机中的波形缩放
公开(公告)号：US08755456B2
公开(公告)日：2014-06-17
申请号：US13415572
申请日：2012-03-08
申请人： Vinod V. Panikkath , Vijay K. Chellappa , Bhushan Shanti Asuri
发明人： Vinod V. Panikkath , Vijay K. Chellappa , Bhushan Shanti Asuri
IPC分类号： H04L25/49 , H04L27/00
CPC分类号： H04L27/368 , H04L27/365
摘要： A wireless device for waveform scaling is disclosed. The wireless device includes a modulator that increases a magnitude of a peak digital code beyond a maximum available digital code for transmit power levels below a transmit power threshold to produce an adjusted digital code. The magnitude of the peak digital code is not increased beyond the maximum available digital code for transmit power levels above the transmit power threshold. The wireless device also includes a digital-to-analog converter that converts the adjusted digital code into an analog signal.
摘要翻译：公开了一种用于波形缩放的无线设备。该无线设备包括调制器，该调制器将峰值数字码的大小增加到超过发射功率阈值的发射功率电平的最大可用数字码以产生经调整的数字码。高于发射功率阈值的发射功率电平，峰值数字码的幅度不会超过最大可用数字码。无线设备还包括将经调整的数字代码转换为模拟信号的数模转换器。

6. 发明授权

US08634782B2 Multi-antenna wireless device with power combining power amplifiers 有权
标题翻译：具有功率合成功率放大器的多天线无线设备
公开(公告)号：US08634782B2
公开(公告)日：2014-01-21
申请号：US13274256
申请日：2011-10-14
申请人： Bhushan Shanti Asuri , Babak Nejati
发明人： Bhushan Shanti Asuri , Babak Nejati
IPC分类号： H04M1/00
CPC分类号： H04B1/0064 , H04B1/0483 , H04B1/406
摘要： A wireless device with power combining power amplifiers to support transmission on multiple antennas is disclosed. The power amplifiers may be operated together to obtain higher output power or separately to support transmission on multiple antennas. In an exemplary design, an apparatus includes first and second power amplifiers. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna in a first operating mode (e.g., a MIMO mode or a transmit diversity mode). The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna in the first operating mode. The first and second power amplifiers are power combined in a second operating mode to provide a third output signal, which has a higher maximum output power than the first or second output signal.
摘要翻译：公开了一种具有功率组合功率放大器以支持多个天线上的传输的无线设备。功率放大器可以一起操作以获得更高的输出功率或单独地支持在多个天线上的传输。在示例性设计中，装置包括第一和第二功率放大器。第一功率放大器放大第一输入信号，并以第一操作模式（例如，MIMO模式或发射分集模式）为第一天线提供第一输出信号。第二功率放大器放大第一输入信号或第二输入信号，并且在第一操作模式中为第二天线提供第二输出信号。第一和第二功率放大器在第二操作模式下被电力组合以提供第三输出信号，其具有比第一或第二输出信号更高的最大输出功率。

7. 发明申请

US20130217339A1 PRECISION POWER/PEAK DETECTOR USING ON-CHIP REFERENCE POWER SOURCE 有权
标题翻译：精密功率/峰值检测器使用片上参考电源
公开(公告)号：US20130217339A1
公开(公告)日：2013-08-22
申请号：US13587604
申请日：2012-08-16
申请人： Bhushan Shanti Asuri
发明人： Bhushan Shanti Asuri
IPC分类号： H04B17/00
CPC分类号： H04B17/101 , H03G3/3042 , H04B17/14
摘要： A wireless device is described. The wireless device includes a high precision power/peak detector. The wireless device also includes a reference signal source. The high precision power/peak detector and the reference signal source are on an integrated circuit. The reference signal source provides a precision reference signal used to calibrate the high precision power/peak detector.
摘要翻译：描述无线设备。无线设备包括高精度功率/峰值检测器。无线设备还包括参考信号源。高精度功率/峰值检测器和参考信号源位于集成电路上。参考信号源提供用于校准高精度功率/峰值检测器的精确参考信号。

8. 发明授权

US08095103B2 Upconverter and downconverter with switched transconductance and LO masking 有权
标题翻译：上变频器和下变频器具有开关跨导和LO屏蔽
公开(公告)号：US08095103B2
公开(公告)日：2012-01-10
申请号：US12185048
申请日：2008-08-01
申请人： Bhushan Shanti Asuri
发明人： Bhushan Shanti Asuri
IPC分类号： H04B15/00 , H04B1/26
CPC分类号： H03D7/166 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/165 , H03D2200/0084
摘要： An upconverter and a downconverter having good performance are described. In one design, the upconverter includes first, second, and third sets of transistors. The first set of transistors receives baseband signals and provides an upconverted signal. The second set of transistors switches the transconductance of the transistors in the first set based on transmit (TX) local oscillator (LO) signals. The third set of transistors enables and disables the transistors in the second set based on a TX VCO signal. In one design, the downconverter includes first, second, and third sets of transistors. The first set of transistors receives a modulated signal and provides baseband signals. The second set of transistors switches the transconductance of the transistors in the first set based on receive (RX) LO signals. The third set of transistors enables and disables the transistors in the second set based on an RX VCO signal.
摘要翻译：描述了具有良好性能的上变频器和下变频器。在一种设计中，上变频器包括第一，第二和第三组晶体管。第一组晶体管接收基带信号并提供上变频信号。第二组晶体管基于发射（TX）本地振荡器（LO）信号来切换第一组中的晶体管的跨导。第三组晶体管基于TX VCO信号启用和禁用第二组中的晶体管。在一种设计中，下变频器包括第一，第二和第三组晶体管。第一组晶体管接收调制信号并提供基带信号。第二组晶体管基于接收（RX）LO信号来切换第一组中的晶体管的跨导。第三组晶体管基于RX VCO信号启用和禁用第二组中的晶体管。

9. 发明申请

US20100029239A1 UPCONVERTER AND DOWNCONVERTER WITH SWITCHED TRANSCONDUCTANCE AND LO MASKING 有权
标题翻译：具有切换的交叉和垂直遮蔽的上转换器和转换器
公开(公告)号：US20100029239A1
公开(公告)日：2010-02-04
申请号：US12185048
申请日：2008-08-01
申请人： Bhushan Shanti Asuri
发明人： Bhushan Shanti Asuri
IPC分类号： H04B1/28
CPC分类号： H03D7/166 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/165 , H03D2200/0084
摘要： An upconverter and a downconverter having good performance are described. In one design, the upconverter includes first, second, and third sets of transistors. The first set of transistors receives baseband signals and provides an upconverted signal. The second set of transistors switches the transconductance of the transistors in the first set based on transmit (TX) local oscillator (LO) signals. The third set of transistors enables and disables the transistors in the second set based on a TX VCO signal. In one design, the downconverter includes first, second, and third sets of transistors. The first set of transistors receives a modulated signal and provides baseband signals. The second set of transistors switches the transconductance of the transistors in the first set based on receive (RX) LO signals. The third set of transistors enables and disables the transistors in the second set based on an RX VCO signal.
摘要翻译：描述了具有良好性能的上变频器和下变频器。在一种设计中，上变频器包括第一，第二和第三组晶体管。第一组晶体管接收基带信号并提供上变频信号。第二组晶体管基于发射（TX）本地振荡器（LO）信号来切换第一组中的晶体管的跨导。第三组晶体管基于TX VCO信号启用和禁用第二组中的晶体管。在一种设计中，下变频器包括第一，第二和第三组晶体管。第一组晶体管接收调制信号并提供基带信号。第二组晶体管基于接收（RX）LO信号来切换第一组中的晶体管的跨导。第三组晶体管基于RX VCO信号启用和禁用第二组中的晶体管。

10. 发明授权

US08774742B2 High efficiency transmitter 有权
标题翻译：高效率变送器
公开(公告)号：US08774742B2
公开(公告)日：2014-07-08
申请号：US13353062
申请日：2012-01-18
申请人： Bhushan Shanti Asuri , Ibrahim Ramez Chamas , Prasad Srinivasa Siva Gudem
发明人： Bhushan Shanti Asuri , Ibrahim Ramez Chamas , Prasad Srinivasa Siva Gudem
IPC分类号： H04B1/04
CPC分类号： H04B1/0483 , H03F1/02 , H03F3/24 , H04B2001/045
摘要： A high efficiency transmitter is disclosed. In an exemplary embodiment, a transmitter is provided that includes a first transmission path configured to receive a baseband signal and generate a first RF output when output power is in a first output power range, and a second transmission path configured to receive the baseband signal and generate a second RF output when the output power is in a second output power range.
摘要翻译：公开了一种高效率的发射机。在示例性实施例中，提供了一种发射机，其包括：第一传输路径，被配置为在输出功率处于第一输出功率范围内时接收基带信号并产生第一RF输出;第二传输路径被配置为接收基带信号;以及当输出功率处于第二输出功率范围时，产生第二RF输出。

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