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1. 发明申请

US20090302944A1 NOISE-SHAPED BLOCKER-REJECT AMPLIFIER 失效
标题翻译：噪声阻塞器 - 放大器
公开(公告)号：US20090302944A1
公开(公告)日：2009-12-10
申请号：US12132834
申请日：2008-06-04
申请人： Ahmet Tekin , Hassan Elwan , Edward Youssoufian
发明人： Ahmet Tekin , Hassan Elwan , Edward Youssoufian
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F2200/336 , H03F2203/45134 , H03F2203/45136 , H03F2203/45138 , H03F2203/45521 , H03F2203/45526 , H03F2203/45591 , H03H11/1291 , H03H11/32 , H03H11/525
摘要： A fully differential amplifier that amplifies and filters a signal band of a communications channel, the signal band including a desired signal and at least one blocker signal of an adjacent communications channel, the fully differential amplifier includes a fully differential operational amplifier (op-amp) with a common mode feedback, the fully differential operational amplifier amplifying the desired signal, a variable input resistance connected to an input of the fully differential op-amp, and an asymmetric floating frequency dependent negative resistance (AFFDNR) filter connected to the fully differential op-amp between the input and an output of the fully differential op-amp. A plurality of inputs of the fully differential op-amp may be virtually grounded to reduce swings in a voltage. The AFFDNR filter filters the at least one blocker signal and includes a plurality of resistors that implement a high order filtering of the at least one blocker signal.
摘要翻译：一种全差分放大器，其对通信信道的信号频带进行放大和滤波，所述信号频带包括期望信号和相邻通信信道的至少一个阻塞信号，全差分放大器包括全差分运算放大器（运算放大器）具有共模反馈，全差分运算放大器放大所需信号，连接到全差分运算放大器的输入的可变输入电阻，以及连接到全差分运算放大器的非对称浮动频率相关负电阻（AFFDNR）滤波器在全差分运算放大器的输入和输出之间。全差分运算放大器的多个输入可以实际上接地以减少电压中的摆动。 AFFDNR滤波器对至少一个阻塞信号进行滤波，并且包括实现至少一个阻塞信号的高阶滤波的多个电阻器。

2. 发明授权

US07619472B1 Noise-shaped blocker-reject amplifier 失效
标题翻译：噪声形阻抑制放大器
公开(公告)号：US07619472B1
公开(公告)日：2009-11-17
申请号：US12132834
申请日：2008-06-04
申请人： Ahmet Tekin , Hassan Elwan , Edward Youssoufian
发明人： Ahmet Tekin , Hassan Elwan , Edward Youssoufian
IPC分类号： H03F3/45
CPC分类号： H03F3/45475 , H03F2200/336 , H03F2203/45134 , H03F2203/45136 , H03F2203/45138 , H03F2203/45521 , H03F2203/45526 , H03F2203/45591 , H03H11/1291 , H03H11/32 , H03H11/525
摘要： A fully differential amplifier that amplifies and filters a signal band of a communications channel, the signal band including a desired signal and at least one blocker signal of an adjacent communications channel, the fully differential amplifier includes a fully differential operational amplifier (op-amp) with a common mode feedback, the fully differential operational amplifier amplifying the desired signal, a variable input resistance connected to an input of the fully differential op-amp, and an asymmetric floating frequency dependent negative resistance (AFFDNR) filter connected to the fully differential op-amp between the input and an output of the fully differential op-amp. A plurality of inputs of the fully differential op-amp may be virtually grounded to reduce swings in a voltage. The AFFDNR filter filters the at least one blocker signal and includes a plurality of resistors that implement a high order filtering of the at least one blocker signal.
摘要翻译：一种全差分放大器，其对通信信道的信号频带进行放大和滤波，所述信号频带包括期望信号和至少一个相邻通信信道的阻塞信号，全差分放大器包括全差分运算放大器（运算放大器）具有共模反馈，全差分运算放大器放大所需信号，连接到全差分运算放大器的输入的可变输入电阻，以及连接到全差分运算放大器的非对称浮动频率相关负电阻（AFFDNR）滤波器在全差分运算放大器的输入和输出之间。全差分运算放大器的多个输入可以实际上接地以减少电压中的摆动。 AFFDNR滤波器对至少一个阻塞信号进行滤波，并且包括实现至少一个阻塞信号的高阶滤波的多个电阻器。

3. 发明授权

US08731504B2 System and method for performing RF filtering 有权
标题翻译：执行射频滤波的系统和方法
公开(公告)号：US08731504B2
公开(公告)日：2014-05-20
申请号：US12883179
申请日：2010-09-16
申请人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
发明人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H03D7/1441 , H03D7/1466 , H03D7/1483 , H03D7/165
摘要： A method of filtering and a RF filtering circuit comprising a LO adapted to generate in-phase and quadrature LO signals; a quadrature passive mixer operatively connected to the LO; a filtering impedance operatively connected to the quadrature passive mixer, wherein the voltage at an input node of the quadrature passive mixer comprises the voltage across the filtering impedance up-converted to a frequency of a LO signal received by the quadrature passive mixer. Preferably, the voltage across the filtering impedance comprises a frequency of an input signal of the quadrature passive mixer down-converted by a frequency of the in-phase and quadrature LO signals and filtered by the filtering impedance.
摘要翻译：一种滤波方法和RF滤波电路，包括适于产生同相和正交LO信号的LO; 可操作地连接到LO的正交无源混频器; 可操作地连接到正交无源混频器的滤波阻抗，其中正交无源混频器的输入节点处的电压包括上变频到由正交无源混频器接收的LO信号的频率的滤波阻抗上的电压。优选地，滤波阻抗两端的电压包括被同相和正交LO信号的频率下变频的正交无源混频器的输入信号的频率，并被滤波阻抗滤波。

4. 发明申请

US20080259219A1 UNIVERSAL TUNER FOR MOBILE TV 有权
标题翻译：通用电视移动电视
公开(公告)号：US20080259219A1
公开(公告)日：2008-10-23
申请号：US11737222
申请日：2007-04-19
申请人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
发明人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
IPC分类号： H04N5/50
CPC分类号： H04N5/50 , H03D3/007 , H03J1/005 , H04N21/41407
摘要： A tuner for use in mobile television devices comprises at least one RF front end component comprising a LNA adapted to amplify mobile television signals; a PLL circuit to generate signals; and a pair of mixers to receive the signals from the LNA and the PLL circuit and downconvert the signals; an analog baseband component connected to the RF front end component, wherein the analog baseband component comprises I and Q channel signal paths each comprising a tunable high order impedance filter; at least one signal amplification stage; and a signal filter stage connected to the signal amplification stage, wherein the analog baseband component further comprises a plurality of switches operatively connected to the I and Q channel signal paths, and wherein the plurality of switches are selectively opened and closed in multiple configurations in order to allow the tuner to receive mobile TV signals for all mobile TV standards.
摘要翻译：用于移动电视设备的调谐器包括至少一个RF前端组件，其包括适于放大移动电视信号的LNA; 用于产生信号的PLL电路; 和一对混频器，用于接收来自LNA和PLL电路的信号，并对信号进行下变频; 连接到所述RF前端组件的模拟基带组件，其中所述模拟基带组件包括每个包括可调谐高阶阻抗滤波器的I和Q信道信号路径; 至少一个信号放大级; 以及信号滤波器级，其连接到所述信号放大级，其中所述模拟基带分量还包括可操作地连接到所述I和Q通道信号路径的多个开关，并且其中所述多个开关按照多个配置选择性地打开和关闭以允许调谐器接收所有移动电视标准的移动电视信号。

5. 发明授权

US07352238B2 dB-linear analog variable gain amplifier (VGA) realization system and method 有权
标题翻译： dB线性模拟可变增益放大器（VGA）实现系统和方法
公开(公告)号：US07352238B2
公开(公告)日：2008-04-01
申请号：US11472138
申请日：2006-06-21
申请人： Hassan Elwan , Amr Fahim , Aly Ismail , Edward Youssoufian
发明人： Hassan Elwan , Amr Fahim , Aly Ismail , Edward Youssoufian
IPC分类号： H03F1/36
CPC分类号： H03G7/06 , H03G1/0088 , H03G3/001 , H03G3/3047
摘要： A dB-linear variable gain amplifier, a method for creation, and a system includes an amplifier; a pair of resistor arrays operatively connected to the amplifier, wherein each resistor array comprises MOS transistor resistive switches; a differential ramp-generator circuit operatively connected to the pair of resistor arrays; and voltage control lines generated by the differential ramp-generator circuit, wherein the voltage control lines are operatively connected to each of the MOS transistor resistive switches in the pair of resistor arrays. The number of the voltage control lines that are operatively connected to the each of the MOS transistor resistive switches is equal to the number of resistors in a particular resistor array. The differential ramp-generator circuit is preferably operable to take an automatic gain control voltage and generate a series of differential ramp voltages and apply the series of differential ramp voltages to one of the MOS transistor resistive switches.
摘要翻译：一个dB线性可变增益放大器，一种创建方法和一个系统，包括放大器; 一对可操作地连接到放大器的电阻器阵列，其中每个电阻器阵列包括MOS晶体管电阻开关; 差分斜坡发生器电路，可操作地连接到所述一对电阻器阵列; 以及由差分斜坡发生器电路产生的电压控制线，其中电压控制线可操作地连接到该对电阻器阵列中的每个MOS晶体管电阻开关。可操作地连接到每个MOS晶体管电阻开关的电压控制线的数量等于特定电阻器阵列中的电阻器的数量。差分斜坡发生器电路优选地可操作以获得自动增益控制电压并产生一系列差分斜坡电压，并将一系列差分斜坡电压施加到MOS晶体管电阻开关之一。

6. 再颁专利

USRE44551E1 Universal tuner for mobile TV 有权
标题翻译：通用调谐器用于手机电视
公开(公告)号：USRE44551E1
公开(公告)日：2013-10-22
申请号：US13645471
申请日：2012-10-04
申请人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
发明人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
IPC分类号： H04N5/50
CPC分类号： H04N5/50 , H03D3/007 , H03J1/005 , H04N21/41407
摘要： A tuner for use in mobile television devices comprises at least one RF front end component comprising a LNA adapted to amplify mobile television signals; a PLL circuit to generate signals; and a pair of mixers to receive the signals from the LNA and the PLL circuit and downconvert the signals; an analog baseband component connected to the RF front end component, wherein the analog baseband component comprises I and Q channel signal paths each comprising a tunable high order impedance filter; at least one signal amplification stage; and a signal filter stage connected to the signal amplification stage, wherein the analog baseband component further comprises a plurality of switches operatively connected to the I and Q channel signal paths, and wherein the plurality of switches are selectively opened and closed in multiple configurations in order to allow the tuner to receive mobile TV signals for all mobile TV standards.
摘要翻译：用于移动电视设备的调谐器包括至少一个RF前端组件，其包括适于放大移动电视信号的LNA; 用于产生信号的PLL电路; 和一对混频器，用于接收来自LNA和PLL电路的信号，并对信号进行下变频; 连接到所述RF前端组件的模拟基带组件，其中所述模拟基带组件包括每个包括可调谐高阶阻抗滤波器的I和Q信道信号路径; 至少一个信号放大级; 以及信号滤波器级，其连接到所述信号放大级，其中所述模拟基带分量还包括可操作地连接到所述I和Q通道信号路径的多个开关，并且其中所述多个开关按照多个配置选择性地打开和关闭以允许调谐器接收所有移动电视标准的移动电视信号。

7. 发明申请

US20110003573A1 System and Method for Performing RF Filtering 有权
标题翻译：执行射频滤波的系统和方法
公开(公告)号：US20110003573A1
公开(公告)日：2011-01-06
申请号：US12883179
申请日：2010-09-16
申请人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
发明人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
IPC分类号： H04B1/10
CPC分类号： H04B1/30 , H03D7/1441 , H03D7/1466 , H03D7/1483 , H03D7/165
摘要： A method of filtering and a RF filtering circuit comprising a LO adapted to generate in-phase and quadrature LO signals; a quadrature passive mixer operatively connected to the LO; a filtering impedance operatively connected to the quadrature passive mixer, wherein the voltage at an input node of the quadrature passive mixer comprises the voltage across the filtering impedance up-converted to a frequency of a LO signal received by the quadrature passive mixer. Preferably, the voltage across the filtering impedance comprises a frequency of an input signal of the quadrature passive mixer down-converted by a frequency of the in-phase and quadrature LO signals and filtered by the filtering impedance.
摘要翻译：一种滤波方法和RF滤波电路，包括适于产生同相和正交LO信号的LO; 可操作地连接到LO的正交无源混频器; 可操作地连接到正交无源混频器的滤波阻抗，其中正交无源混频器的输入节点处的电压包括上变频到由正交无源混频器接收的LO信号的频率的滤波阻抗上的电压。优选地，滤波阻抗两端的电压包括被同相和正交LO信号的频率下变频的正交无源混频器的输入信号的频率，并被滤波阻抗滤波。

8. 发明授权

US07546110B2 Low power highly linear RF downconverter 有权
标题翻译：低功率高线性RF下变频器
公开(公告)号：US07546110B2
公开(公告)日：2009-06-09
申请号：US11378558
申请日：2006-03-17
申请人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
发明人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
IPC分类号： H04B1/26 , H04Q1/26
CPC分类号： H03D7/161
摘要： A technique for downconverting a RF signal comprises an antenna adapted to receive an RF signal; a transconductance amplifier connected to the antenna and adapted to amplify the RF signal; a passive mixer connected to the transconductance amplifier and adapted for current domain mixing of electrical current transferred from the transconductance amplifier; and a load impedance connected to the passive mixer. The load impedance may comprise a parallel combination of a frequency dependent negative resistance component, a capacitor, and a resistor. The load impedance may comprise a pair of complex poles, a pair of imaginary zeros, and a real pole. Voltages at an input and an output of the passive mixer are related such that the input voltage of the passive mixer is an upconverted version of the output voltage of the passive mixer, wherein the input voltage of the passive mixer is at an output of the transconductance amplifier.
摘要翻译：用于下变频RF信号的技术包括适于接收RF信号的天线; 连接到天线并适于放大RF信号的跨导放大器; 连接到跨导放大器的无源混频器，适用于从跨导放大器传输的电流的电流域混合; 以及连接到无源混频器的负载阻抗。负载阻抗可以包括频率依赖负电阻分量，电容器和电阻器的并联组合。负载阻抗可以包括一对复极点，一对假想零点和实数极点。无源混频器的输入和输出端的电压与无源混频器的输入电压是无源混频器的输出电压的上变频版本相关，其中无源混频器的输入电压处于跨导输出端放大器

9. 发明授权

US07973861B2 Universal tuner for mobile TV 有权
标题翻译：通用调谐器用于手机电视
公开(公告)号：US07973861B2
公开(公告)日：2011-07-05
申请号：US11737222
申请日：2007-04-19
申请人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
发明人： Mohy Abdelgany , Frank Carr , Hassan Elwan , Amr Fahim , Edward Youssoufian
IPC分类号： H04N5/50
CPC分类号： H04N5/50 , H03D3/007 , H03J1/005 , H04N21/41407
摘要： A tuner for use in mobile television devices comprises at least one RF front end component comprising a LNA adapted to amplify mobile television signals; a PLL circuit to generate signals; and a pair of mixers to receive the signals from the LNA and the PLL circuit and downconvert the signals; an analog baseband component connected to the RF front end component, wherein the analog baseband component comprises I and Q channel signal paths each comprising a tunable high order impedance filter; at least one signal amplification stage; and a signal filter stage connected to the signal amplification stage, wherein the analog baseband component further comprises a plurality of switches operatively connected to the I and Q channel signal paths, and wherein the plurality of switches are selectively opened and closed in multiple configurations in order to allow the tuner to receive mobile TV signals for all mobile TV standards.
摘要翻译：用于移动电视设备的调谐器包括至少一个RF前端组件，其包括适于放大移动电视信号的LNA; 用于产生信号的PLL电路; 和一对混频器，用于接收来自LNA和PLL电路的信号，并对信号进行下变频; 连接到所述RF前端组件的模拟基带组件，其中所述模拟基带组件包括每个包括可调谐高阶阻抗滤波器的I和Q信道信号路径; 至少一个信号放大级; 以及信号滤波器级，其连接到所述信号放大级，其中所述模拟基带分量还包括可操作地连接到所述I和Q通道信号路径的多个开关，并且其中所述多个开关按照多个配置选择性地打开和关闭以允许调谐器接收所有移动电视标准的移动电视信号。

10. 发明申请

US20070218855A1 System and method for performing RF filtering 审中-公开
标题翻译：执行射频滤波的系统和方法
公开(公告)号：US20070218855A1
公开(公告)日：2007-09-20
申请号：US11377721
申请日：2006-03-16
申请人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
发明人： Aly Ismail , Edward Youssoufian , Hassan Elwan , Frank Carr
IPC分类号： H04B1/26
CPC分类号： H04B1/30 , H03D7/1441 , H03D7/1466 , H03D7/1483 , H03D7/165
摘要： A method of filtering and a RF filtering circuit comprising a LO adapted to generate in-phase and quadrature LO baseband signals; a quadrature passive mixer operatively connected to the LO; a filtering impedance operatively connected to the quadrature passive mixer, wherein the voltage at an input node of the quadrature passive mixer comprises the voltage across the filtering impedance up-converted to a frequency of a LO baseband signal received by the quadrature passive mixer. Preferably, the voltage across the filtering impedance comprises a frequency of an input signal of the quadrature passive mixer down-converted by a frequency of the in-phase and quadrature LO baseband signals and filtered by the filtering impedance.
摘要翻译：一种滤波方法和RF滤波电路，包括适于产生同相和正交LO基带信号的LO; 可操作地连接到LO的正交无源混频器; 滤波阻抗可操作地连接到正交无源混频器，其中正交无源混频器的输入节点处的电压包括上变频到由正交无源混频器接收的LO基带信号的频率的滤波阻抗上的电压。优选地，滤波阻抗两端的电压包括被同相和正交LO基带信号的频率下变频的正交无源混频器的输入信号的频率，并被滤波阻抗滤波。

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