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1. 发明授权

US08135365B2 Phase-locked loop based controller for adjusting an adaptive continuous-time filter 有权
标题翻译：基于锁相环的控制器，用于调整自适应连续时间滤波器
公开(公告)号：US08135365B2
公开(公告)日：2012-03-13
申请号：US12960183
申请日：2010-12-03
申请人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H04B1/10
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semiconductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

2. 发明授权

US07493097B2 High dynamic range compact mixer output stage for a wireless receiver 有权
标题翻译：用于无线接收器的高动态范围紧凑型混音器输出级
公开(公告)号：US07493097B2
公开(公告)日：2009-02-17
申请号：US11177102
申请日：2005-07-07
申请人： Aly M. Ismail , Geoffrey Hatcher , Edward Youssoufian , Dave Yates
发明人： Aly M. Ismail , Geoffrey Hatcher , Edward Youssoufian , Dave Yates
IPC分类号： H04B1/10 , H04B1/18
CPC分类号： H03D7/00 , H03D7/14
摘要： A mixer is disclosed having an output stage with an amplifier or gain device configured in a feedback loop to maintain a virtual ground at the input to the gain device. The gain device provides significant dynamic range, gain, and the appropriate impedance matching to insure a low noise output signal of a desired magnitude. Use of an amplifying output stage removes the dependence between mixer gain and mixer configuration, such as mixer bias resistor value, while concurrently overcome undesirable flicker noise that results from use of active devices in the mixer bias structure. A stable virtual ground at the mixer output and gain device input provides linearity over frequency. The gain device may comprises an operational amplifier or trans-resistance/trans-conductance device.
摘要翻译：公开了一种具有输出级的混频器，放大器或增益器件配置在反馈环路中，以在增益器件的输入端保持虚拟接地。增益器件提供了显着的动态范围，增益和适当的阻抗匹配，以确保具有所需幅度的低噪声输出信号。使用放大输出级除去混频器增益和混频器配置之间的相关性，例如混频器偏置电阻值，同时克服在混频器偏置结构中使用有源器件导致的不期望的闪烁噪声。混频器输出和增益器件输入端的稳定虚拟接地提供频率线性。增益装置可以包括运算放大器或反电阻/反电导装置。

3. 发明授权

US07212073B2 Capacitive tuning network for low gain digitally controlled oscillator 有权
标题翻译：用于低增益数字控制振荡器的电容调谐网络
公开(公告)号：US07212073B2
公开(公告)日：2007-05-01
申请号：US11049560
申请日：2005-02-02
申请人： Edward Youssoufian , Aly M. Ismail
发明人： Edward Youssoufian , Aly M. Ismail
IPC分类号： H03L7/099
CPC分类号： H03L7/0991
摘要： According to one exemplary embodiment, a digitally controlled oscillator includes a capacitive tuning network, where the capacitive tuning network controls a frequency of an output signal of the digitally controlled oscillator. The capacitive tuning network includes a switched capacitor array, where a change of a first capacitance of the switched capacitor array causes the capacitive tuning network to change by a second capacitance, and where the first capacitance is larger than the second capacitance. According to this exemplary embodiment, the capacitive tuning network further includes a first capacitor coupled in parallel with the switched capacitor array. The first capacitor has a third capacitance, which is larger than the first capacitance. The capacitive tuning network further includes a second capacitor coupled in series with the first capacitor and the switched capacitor array. The second capacitor can have a fourth capacitance, where the third capacitance is larger than the fourth capacitance.
摘要翻译：根据一个示例性实施例，数字控制振荡器包括电容调谐网络，其中电容调谐网络控制数字控制振荡器的输出信号的频率。电容调谐网络包括开关电容器阵列，其中开关电容器阵列的第一电容的改变使得电容调谐网络改变第二电容，并且其中第一电容大于第二电容。根据该示例性实施例，电容调谐网络还包括与开关电容器阵列并联耦合的第一电容器。第一电容器具有比第一电容大的第三电容。电容调谐网络还包括与第一电容器和开关电容器阵列串联耦合的第二电容器。第二电容器可以具有第四电容，其中第三电容大于第四电容。

4. 发明申请

US20120133426A1 PHASE-LOCKED LOOP BASED CONTROLLER FOR ADJUSTING AN ADAPTIVE CONTINUOUS-TIME FILTER 审中-公开
标题翻译：用于调节自适应连续过滤器的相位锁定环路控制器
公开(公告)号：US20120133426A1
公开(公告)日：2012-05-31
申请号：US13366855
申请日：2012-02-06
申请人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H03B1/00
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semi-conductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

5. 发明申请

US20110075777A1 Phase-Locked Loop Based Controller for Adjusting an Adaptive Continuous-Time Filter 有权
标题翻译：用于调整自适应连续时间滤波器的基于锁相环控制器
公开(公告)号：US20110075777A1
公开(公告)日：2011-03-31
申请号：US12960183
申请日：2010-12-03
申请人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H04B1/10 , H03K5/00
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semiconductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

6. 发明授权

US07869780B2 Phase-locked loop based controller for adjusting an adaptive continuous-time filter 有权
标题翻译：基于锁相环的控制器，用于调整自适应连续时间滤波器
公开(公告)号：US07869780B2
公开(公告)日：2011-01-11
申请号：US11737426
申请日：2007-04-19
申请人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H04B1/10
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semiconductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

7. 发明申请

US20080258806A1 Phase-Locked Loop Based Controller for Adjusting an Adaptive Continuous-Time Filter 有权
标题翻译：用于调整自适应连续时间滤波器的基于锁相环控制器
公开(公告)号：US20080258806A1
公开(公告)日：2008-10-23
申请号：US11737426
申请日：2007-04-19
申请人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H03B1/00
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semiconductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

8. 发明授权

US09236851B2 Phase-locked loop based controller for adjusting an adaptive continuous-time filter 有权
标题翻译：基于锁相环的控制器，用于调整自适应连续时间滤波器
公开(公告)号：US09236851B2
公开(公告)日：2016-01-12
申请号：US13366855
申请日：2012-02-06
申请人： Edward Youssoufian , Aly M. Ismail , Geoffrey Hatcher
发明人： Edward Youssoufian , David Yates , Aly M. Ismail , Geoffrey Hatcher
IPC分类号： H03H11/12
CPC分类号： H03H21/0012 , H03H11/1291 , H03H2210/021 , H03H2210/043 , H03J2200/10
摘要： A direct conversion radio-frequency (RF) receiver includes a controller and an adaptive continuous-time filter. The adaptive continuous-time filter receives a multiple-bit control signal generated by the controller to adjust a characteristic of the continuous-time filter. The controller generates the multiple-bit control signal in response to process variation in the semi-conductor material used to implement the controller and the adaptive continuous-time filter. A method for tuning an adaptive continuous-time filter comprises determining a RC time constant, converting the RC time constant to a digital word, comparing a select bit of the digital word to a respective bit of a predetermined reference word to generate a control bit, applying the control bit to an adjustable element to modify the RC time constant, repeating the determining, converting, comparing and applying steps until the control bits generate an output word and providing the output word to the adaptive continuous-time filter.
摘要翻译：直接转换射频（RF）接收机包括控制器和自适应连续时间滤波器。自适应连续时间滤波器接收由控制器产生的多位控制信号，以调整连续时间滤波器的特性。响应于用于实现控制器和自适应连续时间滤波器的半导体材料中的工艺变化，控制器产生多位控制信号。一种用于调整自适应连续时间滤波器的方法包括：确定RC时间常数，将RC时间常数转换为数字字，将数字字的选择位与预定参考字的相应位进行比较以产生控制位，将控制位应用到可调元件以修改RC时间常数，重复确定，转换，比较和应用步骤，直到控制位产生输出字并将输出字提供给自适应连续时间滤波器。

9. 发明授权

US08005449B2 Subsampling wideband RSSI circuit 有权
标题翻译：二次采样宽带RSSI电路
公开(公告)号：US08005449B2
公开(公告)日：2011-08-23
申请号：US12136864
申请日：2008-06-11
申请人： Edward Youssoufian , Amr Fahim
发明人： Edward Youssoufian , Amr Fahim
IPC分类号： H04B17/00
CPC分类号： H04B1/1027 , H04B17/318
摘要： A Received Signal Strength Indicator (RSSI) circuit includes a subsampling circuit that processes an input signal comprising a sampling frequency, fs, wherein the subsampling circuit subsamples the input signal, wherein the input signal is subsampled to concentrate a power in a narrow bandwidth; an analog-to-digital converter (ADC) operatively connected to the subsampling circuit, wherein the ADC digitizes the subsampled signal; and a baseband detector operatively connected to the ADC, wherein the baseband detector detects a power from the digitized subsampled signal and creates an output signal. The subsampling circuit and the ADC may operate as a single subsampling ADC. The RSSI circuit may further comprise ignoring higher order aliases at a multiple of the sampling frequency if the baseband detector is clocked at the sampling frequency.
摘要翻译：接收信号强度指示器（RSSI）电路包括子采样电路，其处理包括采样频率fs的输入信号，其中所述子采样电路对所述输入信号进行子采样，其中所述输入信号被二次采样以集中在窄带宽中的功率; 模数转换器（ADC），其可操作地连接到所述子采样电路，其中所述ADC对所述子采样信号进行数字化; 以及可操作地连接到ADC的基带检测器，其中基带检测器检测来自数字化的二次采样信号的功率并产生输出信号。子采样电路和ADC可以作为单个子采样ADC工作。如果基带检测器以采样频率计时，则RSSI电路还可以包括以采样频率的倍数忽略较高阶别名。

10. 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。

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