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11. 发明授权

US07190230B1 Method and apparatus for an LNA with high linearity and improved gain control 有权
标题翻译：具有高线性度和改进的增益控制的LNA的方法和装置
公开(公告)号：US07190230B1
公开(公告)日：2007-03-13
申请号：US11435995
申请日：2006-05-17
申请人： Xiaodong Jin , Lawrence Tse , King Chun Tsai , George Chien
发明人： Xiaodong Jin , Lawrence Tse , King Chun Tsai , George Chien
IPC分类号： H03F3/04
CPC分类号： H03F3/193 , H03F1/223
摘要： A low noise amplifier (LNA) comprises an amplifier having an inverting input, a non-inverting input and an output. A first transistor has a control input that communicates with said output of said amplifier, a first terminal that generates a LNA output current and a second terminal that communicates with said inverting input. A device communicates with said second terminal of said first transistor, includes an output and has a resistance that is modulated in response to an input voltage to said LNA. The device is a variable resistor.
摘要翻译：低噪声放大器（LNA）包括具有反相输入，非反相输入和输出的放大器。第一晶体管具有与所述放大器的所述输出通信的控制输入端，产生LNA输出电流的第一端子和与所述反相输入端通信的第二端子。与所述第一晶体管的所述第二端子通信的装置包括输出端，并具有响应于所述LNA的输入电压而被调制的电阻。该器件是一个可变电阻器。

12. 发明授权

US07177620B1 Mixer constant linear range biasing apparatus and method 有权
标题翻译：混合器恒定线性范围偏置装置及方法
公开(公告)号：US07177620B1
公开(公告)日：2007-02-13
申请号：US10388920
申请日：2003-03-14
申请人： King Chun Tsai , Lawrence Tse
发明人： King Chun Tsai , Lawrence Tse
IPC分类号： H04B1/28 , H04B1/26
CPC分类号： H03D7/1441 , H03D7/1458 , H03D7/1491 , H03D2200/0043 , H03D2200/0084 , H03D2200/0096
摘要： A Gilbert cell mixer for a wireless transceiver includes a first stage that performs voltage to current conversions and that includes first and second transistors that are operated in a saturation region and third and fourth transistors that are operated in a triode region. A second stage communicates with the first stage and that performs frequency conversion. A biasing circuit communicates with the first stage to maintain a substantially constant input linear range over temperature and process variations.
摘要翻译：用于无线收发器的吉尔伯特单元混合器包括执行电压到电流转换的第一级，并且包括在饱和区域中操作的第一和第二晶体管以及在三极管区域中操作的第三和第四晶体管。第二级与第一级通信并执行频率转换。偏置电路与第一级通信，以保持温度和过程变化之间基本恒定的输入线性范围。

13. 发明授权

US06897729B1 Self-calibrating gain control circuit for low noise amplifier 有权
标题翻译：用于低噪声放大器的自校准增益控制电路
公开(公告)号：US06897729B1
公开(公告)日：2005-05-24
申请号：US10889643
申请日：2004-07-12
申请人： Xiaodong Jin , Lawrence Tse
发明人： Xiaodong Jin , Lawrence Tse
IPC分类号： H03F1/30 , H03F3/18 , H03F3/193 , H03G1/00 , H03F3/04
CPC分类号： H03G1/00 , H03F1/301 , H03F3/193 , H03F2200/294 , H03F2200/372
摘要： An amplifier comprises a Low Noise Amplifier (LNA) that amplifies a Radio Frequency (RF) signal that includes a transconductance, a gain and an input stage that receives the RF signal. A bias assembly includes a bias circuit with a bias resistance and generates a bias current for the input stage of the LNA, which is related to the bias resistance. A shunt feedback stage amplifies an output of the input stage, generates an RF output and includes a shunt resistance. Changes in the bias resistance due to changes in conditions are substantially offset by changes in the shunt resistance due to the changes in conditions, which reduces variation of the gain of the LNA based on the changes in conditions.
摘要翻译：放大器包括放大包括跨导的射频（RF）信号的低噪声放大器（LNA），接收RF信号的增益和输入级。偏置组件包括具有偏置电阻的偏置电路并且产生与偏置电阻相关的LNA的输入级的偏置电流。分路反馈级放大输入级的输出，产生RF输出并且包括分流电阻。由于条件变化导致的分流电阻的变化基本上被条件变化引起的偏置电阻的变化抵消，这样可以根据条件的变化来减小LNA的增益的变化。

14. 发明授权

US06784738B1 Method and apparatus for gain control in a CMOS low noise amplifier 有权
标题翻译： CMOS低噪声放大器中增益控制的方法和装置
公开(公告)号：US06784738B1
公开(公告)日：2004-08-31
申请号：US10301349
申请日：2002-11-20
申请人： Xiaodong Jin , Lawrence Tse
发明人： Xiaodong Jin , Lawrence Tse
IPC分类号： H03F318
CPC分类号： H03G1/00 , H03F1/301 , H03F3/193 , H03F2200/294 , H03F2200/372
摘要： An amplifier comprising a Low Noise Amplifier (LNA) to amplify a Radio Frequency (RF) signal. The LNA having a transconductance and including an input stage to receive the RF signal. The LNA again varying as a function of changes in conditions. A bias assembly to generate a bias current to bias the LNA input stage. The bias assembly configured to reduce variation of the LNA gain to changes in conditions.
摘要翻译：一种放大器，包括用于放大射频（RF）信号的低噪声放大器（LNA）。 LNA具有跨导并且包括用于接收RF信号的输入级。 LNA随条件变化而变化。偏置组件，用于产生偏置电流以偏置LNA输入级。偏置组件被配置为减小LNA增益对条件变化的变化。

15. 发明授权

US09066291B1 Active network system for wireless computer networks 有权
标题翻译：无线计算机网络的主动网络系统
公开(公告)号：US09066291B1
公开(公告)日：2015-06-23
申请号：US10826171
申请日：2004-04-16
申请人： James Chen , Lawrence Tse , Brian Bosso , Hunghsin Kuo , Chuong Vu
发明人： James Chen , Lawrence Tse , Brian Bosso , Hunghsin Kuo , Chuong Vu
IPC分类号： H04B7/14 , H04W52/02
CPC分类号： H04W52/0212 , H04W52/0261 , H04W52/0296 , Y02D70/142 , Y02D70/146 , Y02D70/26
摘要： An active network system for a host device with a host processor, comprises a wireless port including a first physical layer/medium access control (PHY/MAC) device. A first wired port includes a second PHY/MAC device. A secondary processor communicates with the wireless port, the first wired port and the host processor. The secondary processor, the wireless port and the first wired port support network functionality when the host processor is an inactive mode. The network functionality includes at least one of access point functionality, router functionality, repeater functionality, point-to-point functionality and point-to-multipoint functionality.
摘要翻译：用于具有主机处理器的主机设备的主动网络系统包括包括第一物理层/媒体访问控制（PHY / MAC）设备的无线端口。第一有线端口包括第二PHY / MAC设备。辅助处理器与无线端口，第一有线端口和主机处理器进行通信。当主处理器处于非活动模式时，辅助处理器，无线端口和第一有线端口支持网络功能。网络功能包括接入点功能，路由器功能，中继器功能，点到点功能和点对多点功能中的至少一个。

16. 发明授权

US08331884B1 Voltage regulator for high performance RF systems 有权
标题翻译：用于高性能RF系统的稳压器
公开(公告)号：US08331884B1
公开(公告)日：2012-12-11
申请号：US12893604
申请日：2010-09-29
申请人： Swee-Ann Teo , Lawrence Tse , Yonghua Song
发明人： Swee-Ann Teo , Lawrence Tse , Yonghua Song
IPC分类号： H04B1/04 , H04B1/06
CPC分类号： H04B1/40 , H03G3/004
摘要： A voltage regulator for a radio frequency circuit including a master regulator circuit, a first slave regulator circuit, and a first radio frequency subcircuit. The master regulator circuit is configured to i) receive a reference voltage signal and a feedback signal and ii) output a control voltage signal based on the reference voltage signal and the feedback signal. The first slave regulator circuit is configured to i) receive the control voltage signal and ii) output a first regulated supply voltage signal based on the control voltage signal. The first radio frequency subcircuit is configured to receive the first regulated supply voltage signal. The control voltage signal corresponds to a desired supply voltage for the first radio frequency subcircuit.
摘要翻译：一种用于射频电路的电压调节器，包括主调节器电路，第一从调节器电路和第一射频子电路。主调节器电路被配置为i）接收参考电压信号和反馈信号，以及ii）基于参考电压信号和反馈信号输出控制电压信号。第一从调节器电路被配置为i）接收控制电压信号，以及ii）基于控制电压信号输出第一稳压电源电压信号。第一射频分支电路被配置为接收第一稳压电源电压信号。控制电压信号对应于第一射频子电路的期望电源电压。

17. 发明授权

US07855604B1 Protection circuit and method for RF power amplifiers in WLAN transceivers 有权
标题翻译： WLAN收发器中RF功率放大器的保护电路和方法
公开(公告)号：US07855604B1
公开(公告)日：2010-12-21
申请号：US12351040
申请日：2009-01-09
申请人： Shuran Wei , Lawrence Tse , Sehat Sutardja
发明人： Shuran Wei , Lawrence Tse , Sehat Sutardja
IPC分类号： H03F1/52
CPC分类号： H03F1/52 , H03F1/523 , H03F3/45183 , H03F3/72 , H03F2200/372 , H03F2200/471 , H03F2200/78 , H03F2203/45544 , H03F2203/45622 , H03F2203/45638
摘要： A transmitter system includes a transmitter with a power amplifier. An antenna communicates with the power amplifier. A protection circuit generates a sensed signal that varies with an impedance of the antenna and reduces an output of the power amplifier in response to the sensed signal exceeding a predetermined threshold.
摘要翻译：发射机系统包括具有功率放大器的发射机。天线与功率放大器通信。保护电路产生随着天线的阻抗而变化的感测信号，并且响应于超过预定阈值的感测信号而减小功率放大器的输出。

18. 发明授权

US07653408B1 Self-adaptive transmit power control for wireless network 有权
标题翻译：用于无线网络的自适应发射功率控制
公开(公告)号：US07653408B1
公开(公告)日：2010-01-26
申请号：US10962376
申请日：2004-10-08
申请人： Milind Kopikare , Brian Bosso , Lawrence Tse
发明人： Milind Kopikare , Brian Bosso , Lawrence Tse
IPC分类号： H04B7/00
CPC分类号： H04W52/16
摘要： A wireless network apparatus includes a receive circuit, a transmit circuit, and a processor. The receive circuit receives a first signal over a wireless link. The first signal represents packets of first data. The transmit circuit transmits a second signal over the wireless link at a power level indicated by a transmit power control signal. The second signal represents packets of second data. The processor determines a link quality of the wireless link based on the first signal. The processor selects one of a plurality of link quality thresholds based on the power level. The processor compares the link quality to the selected one of the plurality of link quality thresholds. The processor generates the transmit power control signal based on the comparison.
摘要翻译：无线网络装置包括接收电路，发射电路和处理器。接收电路通过无线链路接收第一信号。第一个信号表示第一个数据的数据包。发射电路以由发射功率控制信号指示的功率电平在无线链路上发送第二信号。第二信号表示第二数据的分组。处理器基于第一信号来确定无线链路的链路质量。处理器基于功率电平来选择多个链路质量阈值中的一个。处理器将链路质量与所选择的多个链路质量阈值中的一个进行比较。处理器基于比较来生成发射功率控制信号。

19. 发明授权

US07463095B1 Method and apparatus for an LNA with high linearity and improved gain control 有权
标题翻译：具有高线性度和改进的增益控制的LNA的方法和装置
公开(公告)号：US07463095B1
公开(公告)日：2008-12-09
申请号：US11890738
申请日：2007-08-07
申请人： Xiaodong Jin , Lawrence Tse , King Chun Tsai , George Chien
发明人： Xiaodong Jin , Lawrence Tse , King Chun Tsai , George Chien
IPC分类号： H03F3/04
CPC分类号： H03G1/0029 , H03G1/007 , H03G2201/103
摘要： An analog signal processing circuit comprises a bias circuit, a first circuit including a control input that communicates with the bias circuit, a first terminal that generates an output current, and a second terminal, and a device that communicates with the second terminal of the first circuit, that includes a variable resistor, and that has a resistance that is modulated in response to an input signal to the analog signal processing circuit.
摘要翻译：模拟信号处理电路包括偏置电路，包括与偏置电路通信的控制输入的第一电路，产生输出电流的第一端子和第二端子，以及与第一端子的第二端子通信的装置电路，其包括可变电阻器，并且具有响应于模拟信号处理电路的输入信号而被调制的电阻。

20. 发明授权

US07433658B1 System and method for controlling true output power of a transmitter 有权
标题翻译：用于控制发射机的真实输出功率的系统和方法
公开(公告)号：US07433658B1
公开(公告)日：2008-10-07
申请号：US10673263
申请日：2003-09-30
申请人： Alireza Shirvani-Mahdavi , Lawrence Tse
发明人： Alireza Shirvani-Mahdavi , Lawrence Tse
IPC分类号： H04B1/04
CPC分类号： H03G3/3042
摘要： A system for controlling the true output power of a transmitter includes a voltage detector in communication with a power amplifier for detecting an output voltage of the power amplifier and generating a voltage signal proportional to the output voltage. A current detector in communication with the power amplifier detects an output current of the power amplifier and generates a current signal proportional to the output current. A power detector in communication with the voltage and current detectors detects a true output power delivered by the power amplifier. The power detector includes a multiplier for multiplying the current signal and the voltage signal to generate a power signal proportional to the true output power. A power controller in communication with the power detector and the power amplifier controls the power amplifier to regulate the true output power based on the power signal.
摘要翻译：用于控制发射机的真实输出功率的系统包括与功率放大器通信的电压检测器，用于检测功率放大器的输出电压并产生与输出电压成比例的电压信号。与功率放大器通信的电流检测器检测功率放大器的输出电流并产生与输出电流成比例的电流信号。与电压和电流检测器通信的功率检测器检测由功率放大器传递的真实输出功率。功率检测器包括用于将电流信号和电压信号相乘以产生与真实输出功率成比例的功率信号的乘法器。与功率检测器和功率放大器通信的功率控制器控制功率放大器，以根据功率信号调节真实的输出功率。

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