公开(公告)号：US20120269307A1

公开(公告)日：2012-10-25

申请号：US13089808

申请日：2011-04-19

申请人： Mehmet T. Ozgun ,  Essam Atalla

发明人： Mehmet T. Ozgun ,  Essam Atalla

IPC分类号： H04L25/08 ,  H04B1/10

CPC分类号： H04B1/1036

摘要： Circuitry and a method for use in a radio frequency receiver for processing a radio frequency signal are provided. The circuitry comprises a mixer arranged to receive the radio frequency signal and down-convert the received radio frequency signal to a lower frequency. The received radio frequency signal has an interference component and the interference component in the down-converted signal is within an interference frequency range. The circuitry also comprises an LC based notch filter arranged to receive the down-converted signal from the mixer, filter the down-converted signal, and output the filtered signal for processing by a baseband processing block. The LC based notch filter has a notch centered within said interference frequency range, such that the LC based notch filter is arranged to attenuate the interference component in the down-converted signal.

摘要翻译： 提供了用于射频接收机中用于处理射频信号的电路和方法。 该电路包括一个混频器，被配置为接收射频信号并将接收到的射频信号下变频到较低的频率。 所接收的射频信号具有干扰分量，并且下变频信号中的干扰分量在干扰频率范围内。 该电路还包括基于LC的陷波滤波器，其布置成从混频器接收经下变频的信号，滤波下变频信号，并输出滤波后的信号以进行基带处理模块的处理。 基于LC的陷波滤波器具有以所述干扰频率范围为中心的陷波，使得基于LC的陷波滤波器被布置成衰减下变频信号中的干扰分量。

公开(公告)号：US08494473B2

公开(公告)日：2013-07-23

申请号：US13089808

申请日：2011-04-19

申请人： Mehmet T. Ozgun ,  Essam Atalla

发明人： Mehmet T. Ozgun ,  Essam Atalla

IPC分类号： H04B1/10

CPC分类号： H04B1/1036

摘要： Circuitry and a method for use in a radio frequency receiver for processing a radio frequency signal are provided. The circuitry comprises a mixer arranged to receive the radio frequency signal and down-convert the received radio frequency signal to a lower frequency. The received radio frequency signal has an interference component and the interference component in the down-converted signal is within an interference frequency range. The circuitry also comprises an LC based notch filter arranged to receive the down-converted signal from the mixer, filter the down-converted signal, and output the filtered signal for processing by a baseband processing block. The LC based notch filter has a notch centered within said interference frequency range, such that the LC based notch filter is arranged to attenuate the interference component in the down-converted signal.

摘要翻译： 提供了用于射频接收机中用于处理射频信号的电路和方法。 该电路包括一个混频器，被配置为接收射频信号并将接收到的射频信号下变频到较低的频率。 所接收的射频信号具有干扰分量，并且下变频信号中的干扰分量在干扰频率范围内。 该电路还包括基于LC的陷波滤波器，其布置成从混频器接收经下变频的信号，滤波下变频信号，并输出滤波后的信号以进行基带处理模块的处理。 基于LC的陷波滤波器具有以所述干扰频率范围为中心的陷波，使得基于LC的陷波滤波器被布置成衰减下变频信号中的干扰分量。

公开(公告)号：US08121561B2

公开(公告)日：2012-02-21

申请号：US12683012

申请日：2010-01-06

申请人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

发明人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

IPC分类号： H04B1/04

CPC分类号： H04L27/14

摘要： An automatic power tuning system and method, and a transmitter employing either the system or the method. In one embodiment, the system includes: (1) a power detector circuit coupled to an output of a transmitter, the transmitter having an integrator with a first, reference integrator current power control input, a second, integrator capacitor power control input and a plurality of driver fingers selectably employable by a third, driver finger power control input, the power detector configured to generate signals indicating an output voltage of the transmitter and (2) a digital processing circuit coupled to the power detector circuit and configured to employ the signals to determine at least near-optimum reference integrator current and integrator capacitor settings and select a number of driver fingers to employ to drive the output voltage.

摘要翻译： 一种自动功率调节系统和方法，以及采用该系统或方法的发射机。 在一个实施例中，该系统包括：（1）功率检测器电路，其耦合到发射器的输出，所述发射器具有积分器，其具有第一参考积分器电流功率控制输入，第二积分器电容器功率控制输入和多个 所述驱动器手指可选择地由第三驱动器手指功率控制输入使用，所述功率检测器被配置为产生指示所述发射器的输出电压的信号;以及（2）数字处理电路，耦合到所述功率检测器电路并且被配置为将所述信号 确定至少接近最佳参考积分器电流和积分电容器设置，并选择一些驱动手指来驱动输出电压。

公开(公告)号：US08384457B2

公开(公告)日：2013-02-26

申请号：US13081315

申请日：2011-04-06

申请人： Mehmet T. Ozgun ,  Chi Zhang ,  See Taur Lee

发明人： Mehmet T. Ozgun ,  Chi Zhang ,  See Taur Lee

IPC分类号： H03K3/017 ,  H03K5/04 ,  H03K7/08

CPC分类号： H03K5/1565

摘要： Method and circuitry for controlling duty cycle of an input signal towards a desired value comprising a sequence of at least two inverters arranged in series and feedback circuitry. A first inverter is arranged to receive the input signal and a last inverter is arranged to output a signal having the same frequency as the input signal. The output signal is an adjusted version of the input signal. The feedback circuitry is arranged to receive the output signal and comprises a comparing and supplying means. The comparing means compares the output signal with a reference signal indicative of a desired value and generates a feedback signal based on the comparison of the output and reference signal. The supplying means supplies the feedback signal to adjust operating conditions of at least one of the inverters, such that the duty cycle of the output signal is controlled towards the desired value.

摘要翻译： 用于将输入信号的占空比控制到期望值的方法和电路，包括串联布置的至少两个反相器的序列和反馈电路。 第一反相器被布置成接收输入信号，并且最后一个反相器被布置成输出具有与输入信号相同频率的信号。 输出信号是输入信号的调整版本。 反馈电路被布置成接收输出信号并且包括比较和提供装置。 比较装置将输出信号与表示期望值的参考信号进行比较，并且基于输出和参考信号的比较产生反馈信号。 供应装置提供反馈信号以调整至少一个逆变器的操作条件，使得输出信号的占空比被控制到期望值。

公开(公告)号：US20100099369A1

公开(公告)日：2010-04-22

申请号：US12253217

申请日：2008-10-16

申请人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

发明人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

IPC分类号： H04B1/04

CPC分类号： H04B1/0458

摘要： An automatic frequency tuning system and method for a transmit power amplifier. The transmit power amplifier has an antenna feed line including a series capacitor and is coupled to an output of an output driver. In one embodiment, the system includes: (1) a shunt capacitor array having a plurality of capacitors selectably couplable to the antenna feed line to apply a programmable shunt capacitance thereto, (2) a peak detector circuit couplable to nodes of the antenna feed line associated with both terminals of the series capacitor and (3) a processor configured to control the peak detector circuit to determine a ratio of voltage levels measured at the nodes at a given power level of the output driver.

摘要翻译： 一种用于发射功率放大器的自动频率调谐系统和方法。 发射功率放大器具有包括串联电容器的天线馈线，并且耦合到输出驱动器的输出端。 在一个实施例中，系统包括：（1）并联电容器阵列，其具有可选择地耦合到天线馈电线的多个电容器，以向其施加可编程分流电容;（2）峰值检测器电路，可耦合到天线馈线的节点 与串联电容器的两个端子相关联;以及（3）配置成控制峰值检测器电路以确定在输出驱动器的给定功率电平处在节点处测量的电压电平的比率的处理器。

公开(公告)号：US08140027B2

公开(公告)日：2012-03-20

申请号：US12253217

申请日：2008-10-16

申请人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

发明人： Mehmet T. Ozgun ,  Luis E. Ossa ,  Brian P. Ginsburg ,  Srinath M. Ramaswamy ,  Zahir I. Parkar

IPC分类号： H01Q11/12 ,  H04B1/04

CPC分类号： H04B1/0458

摘要： An automatic frequency tuning system and method for a transmit power amplifier. The transmit power amplifier has an antenna feed line including a series capacitor and is coupled to an output of an output driver. In one embodiment, the system includes: (1) a shunt capacitor array having a plurality of capacitors selectably couplable to the antenna feed line to apply a programmable shunt capacitance thereto, (2) a peak detector circuit couplable to nodes of the antenna feed line associated with both terminals of the series capacitor and (3) a processor configured to control the peak detector circuit to determine a ratio of voltage levels measured at the nodes at a given power level of the output driver.

摘要翻译： 一种用于发射功率放大器的自动频率调谐系统和方法。 发射功率放大器具有包括串联电容器的天线馈线，并且耦合到输出驱动器的输出端。 在一个实施例中，系统包括：（1）并联电容器阵列，其具有可选择地耦合到天线馈电线的多个电容器，以向其施加可编程分流电容;（2）峰值检测器电路，可耦合到天线馈线的节点 与串联电容器的两个端子相关联;以及（3）配置成控制峰值检测器电路以确定在输出驱动器的给定功率电平处在节点处测量的电压电平的比率的处理器。

公开(公告)号：US20100099368A1

公开(公告)日：2010-04-22

申请号：US12253205

申请日：2008-10-16

申请人： Mehmet T. Ozgun ,  Baher S. Haroun

发明人： Mehmet T. Ozgun ,  Baher S. Haroun

IPC分类号： H04B1/04

CPC分类号： H03F3/3022 ,  H03F1/32 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/165 ,  H03F2200/333 ,  H03F2200/375 ,  H03F2200/378 ,  H03F2200/391 ,  H03F2200/399 ,  H03F2200/78

摘要： An FM-band transmit power amplifier and a method of transmitting in multiple bands. In one embodiment, the FM-band transmit power amplifier has an input and an output and includes: (1) a pre-filter including a charge-pump based integrator coupled to the input and a passive notch filter having a notch frequency in a band other than an FM band and (2) an output driver coupled between the passive pre-filter and the output and having PMOS and NMOS transconductors configured to receive an output from the passive filter.

摘要翻译： FM波段发射功率放大器以及多频段发射的方法。 在一个实施例中，FM波段发射功率放大器具有输入和输出，并且包括：（1）包括耦合到输入的基于电荷泵的积分器的预滤波器和在频带中具有陷波频率的无源陷波滤波器 （2）耦合在无源前置滤波器和输出端之间的输出驱动器，并且具有配置成从无源滤波器接收输出的PMOS和NMOS跨导器。

公开(公告)号：US08467749B2

公开(公告)日：2013-06-18

申请号：US12253205

申请日：2008-10-16

申请人： Mehmet T. Ozgun ,  Baher S. Haroun

发明人： Mehmet T. Ozgun ,  Baher S. Haroun

IPC分类号： H04B1/04

CPC分类号： H03F3/3022 ,  H03F1/32 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/165 ,  H03F2200/333 ,  H03F2200/375 ,  H03F2200/378 ,  H03F2200/391 ,  H03F2200/399 ,  H03F2200/78

摘要： An FM-band transmit power amplifier and a method of transmitting in multiple bands. In one embodiment, the FM-band transmit power amplifier has an input and an output and includes: (1) a pre-filter including a charge-pump based integrator coupled to the input and a passive notch filter having a notch frequency in a band other than an FM band and (2) an output driver coupled between the passive pre-filter and the output and having PMOS and NMOS transconductors configured to receive an output from the passive filter.

摘要翻译： FM波段发射功率放大器以及多频段发射的方法。 在一个实施例中，FM波段发射功率放大器具有输入和输出，并且包括：（1）包括耦合到输入的基于电荷泵的积分器的预滤波器和在频带中具有陷波频率的无源陷波滤波器 （2）耦合在无源前置滤波器和输出端之间的输出驱动器，并且具有配置成从无源滤波器接收输出的PMOS和NMOS跨导器。

公开(公告)号：US07436251B2

公开(公告)日：2008-10-14

申请号：US11733977

申请日：2007-04-11

申请人： Mehmet T. Ozgun ,  Yannis P. Tsividis

发明人： Mehmet T. Ozgun ,  Yannis P. Tsividis

IPC分类号： G06G7/12

CPC分类号： H04R3/00 ,  H03F3/45475 ,  H03F2203/45138 ,  H03H11/04 ,  H03H11/1217 ,  H03H11/1247

摘要： A circuit including two operational amplifiers connected in parallel. For the purpose of this explanation, assume that an equivalent input noise of a circuit with one operational amplifier is too high. Where two operational amplifiers, are connected in parallel, the signals from the operational amplifiers add as currents at the output node of the parallel combination.

摘要翻译： 包括并联连接的两个运算放大器的电路。 为了说明的目的，假设具有一个运算放大器的电路的等效输入噪声太高。 在并联连接两个运算放大器的情况下，来自运算放大器的信号作为并联组合的输出节点处的电流增加。

公开(公告)号：US20120256669A1

公开(公告)日：2012-10-11

申请号：US13081315

申请日：2011-04-06

申请人： Mehmet T. Ozgun ,  Chi Zhang ,  See Taur Lee

发明人： Mehmet T. Ozgun ,  Chi Zhang ,  See Taur Lee

IPC分类号： H03K3/017

CPC分类号： H03K5/1565

摘要： Method and circuitry for controlling duty cycle of an input signal towards a desired value comprising a sequence of at least two inverters arranged in series and feedback circuitry. A first inverter is arranged to receive the input signal and a last inverter is arranged to output a signal having the same frequency as the input signal. The output signal is an adjusted version of the input signal. The feedback circuitry is arranged to receive the output signal and comprises a comparing and supplying means. The comparing means compares the output signal with a reference signal indicative of a desired value and generates a feedback signal based on the comparison of the output and reference signal. The supplying means supplies the feedback signal to adjust operating conditions of at least one of the inverters, such that the duty cycle of the output signal is controlled towards the desired value.

摘要翻译： 用于将输入信号的占空比控制到期望值的方法和电路，包括串联布置的至少两个反相器的序列和反馈电路。 第一反相器被布置成接收输入信号，并且最后一个反相器被布置成输出具有与输入信号相同频率的信号。 输出信号是输入信号的调整版本。 反馈电路被布置成接收输出信号并且包括比较和提供装置。 比较装置将输出信号与表示期望值的参考信号进行比较，并且基于输出和参考信号的比较产生反馈信号。 供应装置提供反馈信号以调整至少一个逆变器的操作条件，使得输出信号的占空比被控制到期望值。