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1. 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。

2. 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。

3. 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。

4. 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

5. 发明申请

US20070218857A1 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：US20070218857A1
公开(公告)日：2007-09-20
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
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

6. 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。

7. 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。

8. 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。

9. 发明申请

US20070213018A1 System and method for digital autonomous automatic gain control (AGC) for DVB-H receivers 有权
标题翻译：用于DVB-H接收机的数字自动增益控制（AGC）系统和方法
公开(公告)号：US20070213018A1
公开(公告)日：2007-09-13
申请号：US11370761
申请日：2006-03-08
申请人： Aly Ismail , Janakan Sivasubramaniam , Edward Youssoufian , Nabil Yousef , Frank Carr
发明人： Aly Ismail , Janakan Sivasubramaniam , Edward Youssoufian , Nabil Yousef , Frank Carr
IPC分类号： H04B1/04
CPC分类号： H03G3/3068 , H03G3/3078 , H04N5/4401 , H04N5/52 , H04N21/42607 , H04N21/64315
摘要： Digital autonomous AGC for a DVB-H receiver comprises detecting a plurality of RF signals entering a LNA in the DVB-H receiver; detecting a RF transmitter blocker signal occurring at the LNA; and differentiating between a desired RF signal and an undesired RF transmitter blocker signal by varying a differential gain of current through the LNA. A RF servo loop is used for detecting the RF transmitter blocker signal. Logic circuitry of the RF servo loop is integrated with a baseband AGC loop to step control the differential gain of current through the LNA. A RF wideband detector is used for detecting the plurality of RF signals entering the LNA; and sending a voltage output corresponding to voltage levels of the RF signals to a plurality of comparators, wherein each of the plurality of comparators are set at a different programmable voltage threshold level compared with one another.
摘要翻译：用于DVB-H接收机的数字自主AGC包括检测在DVB-H接收机中进入LNA的多个RF信号; 检测在LNA处发生的RF发射器阻挡信号; 并且通过改变通过LNA的电流的差分增益来区分期望的RF信号和不期望的RF发射器阻挡信号。 RF伺服环路用于检测RF发射器阻挡信号。 RF伺服环路的逻辑电路与基带AGC环路集成，以逐步控制通过LNA的电流的差分增益。 RF宽带检测器用于检测进入LNA的多个RF信号; 以及将与所述RF信号的电压电平相对应的电压输出发送到多个比较器，其中所述多个比较器中的每一个被设置在彼此不同的可编程电压阈值电平。

10. 发明授权

US07676207B2 System and method for digital autonomous automatic gain control (AGC) for DVB-H receivers 有权
标题翻译：用于DVB-H接收机的数字自动增益控制（AGC）系统和方法
公开(公告)号：US07676207B2
公开(公告)日：2010-03-09
申请号：US11370761
申请日：2006-03-08
申请人： Aly Ismail , Janakan Sivasubramaniam , Edward Youssoufian , Nabil Yousef , Frank Carr
发明人： Aly Ismail , Janakan Sivasubramaniam , Edward Youssoufian , Nabil Yousef , Frank Carr
IPC分类号： H04B1/06 , H04B1/04
CPC分类号： H03G3/3068 , H03G3/3078 , H04N5/4401 , H04N5/52 , H04N21/42607 , H04N21/64315
摘要： Digital autonomous AGC for a DVB-H receiver comprises detecting a plurality of RF signals entering a LNA in the DVB-H receiver; detecting a RF transmitter blocker signal occurring at the LNA; and differentiating between a desired RF signal and an undesired RF transmitter blocker signal by varying a differential gain of current through the LNA. A RF servo loop is used for detecting the RF transmitter blocker signal. Logic circuitry of the RF servo loop is integrated with a baseband AGC loop to step control the differential gain of current through the LNA. A RF wideband detector is used for detecting the plurality of RF signals entering the LNA; and sending a voltage output corresponding to voltage levels of the RF signals to a plurality of comparators, wherein each of the plurality of comparators are set at a different programmable voltage threshold level compared with one another.
摘要翻译：用于DVB-H接收机的数字自主AGC包括检测在DVB-H接收机中进入LNA的多个RF信号; 检测在LNA处发生的RF发射器阻挡信号; 并且通过改变通过LNA的电流的差分增益来区分期望的RF信号和不期望的RF发射器阻挡信号。 RF伺服环路用于检测RF发射器阻挡信号。 RF伺服环路的逻辑电路与基带AGC环路集成，以逐步控制通过LNA的电流的差分增益。 RF宽带检测器用于检测进入LNA的多个RF信号; 以及将与所述RF信号的电压电平相对应的电压输出发送到多个比较器，其中所述多个比较器中的每一个被设置为彼此相差的可编程电压阈值电平。

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