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1. 发明授权

US09490784B2 Apparatus and method for generating quadrupled reference clock from single ended crystal oscillator 有权
标题翻译：从单端晶体振荡器产生四倍参考时钟的装置和方法
公开(公告)号：US09490784B2
公开(公告)日：2016-11-08
申请号：US14640672
申请日：2015-03-06
申请人： QUALCOMM Incorporated
发明人： Mohammad Bagher Vahid Far , Alireza Khalili , Yashar Rajavi , Amirpouya Kavousian
IPC分类号： H03B19/14 , H03K5/156 , H03K5/00 , H03B19/10
CPC分类号： H03K5/00006 , H03B19/10 , H03B19/14 , H03K5/1565
摘要： A method, an apparatus, and a computer program product are provided. The apparatus outputs a sinusoidal signal according to a first clock frequency, generates, a first digital signal having a 25% duty cycle based on the sinusoidal signal, generates a second digital signal having a 25% duty cycle based on the sinusoidal signal, combines the first digital signal and the second digital signal to generate a combined digital signal having a 50% duty cycle and a second clock frequency that is double the first clock frequency, and doubles the second clock frequency of the combined digital signal to generate an output signal having a third clock frequency that is quadruple the first clock frequency. The apparatus further generates a first control voltage and a second control voltage for the first buffer and a third control voltage for the second buffer based on the output signal.
摘要翻译：提供了一种方法，装置和计算机程序产品。该装置根据第一时钟频率输出正弦信号，产生基于正弦信号的具有25％占空比的第一数字信号，产生基于正弦信号具有25％占空比的第二数字信号，第一数字信号和第二数字信号，以产生具有50％占空比和第二时钟频率的组合数字信号，该第二时钟频率是第一时钟频率的两倍，并且使组合数字信号的第二时钟频率加倍，以产生具有第三个时钟频率是第一个时钟频率的四倍。该装置还基于输出信号产生用于第一缓冲器的第一控制电压和第二控制电压以及第二缓冲器的第三控制电压。

2. 发明授权

US09595935B2 Active notch filter 有权
标题翻译：有源陷波滤波器
公开(公告)号：US09595935B2
公开(公告)日：2017-03-14
申请号：US14709897
申请日：2015-05-12
申请人： QUALCOMM Incorporated
发明人： Amirpouya Kavousian , Yashar Rajavi , Alireza Khalili , Mohammad Bagher Vahid Far
IPC分类号： H04B3/04 , H03H7/01 , H03F1/34 , H03F1/56 , H03F3/24 , H03H7/09 , H04B1/18 , H03H7/06
CPC分类号： H03H7/0123 , H03F1/347 , H03F1/565 , H03F3/245 , H03F2200/321 , H03F2200/451 , H03H7/0153 , H03H7/06 , H03H7/09 , H03H7/1741 , H03H7/46 , H03H2007/013 , H04B1/18
摘要： A method and apparatus are disclosed for filtering a signal, such as a transmit communication signal with a configurable notch filter. The configurable notch filter may attenuate a set of frequencies near a selected notch frequency. In some embodiments, the configurable notch filter may include a variable resistor, a variable capacitor, a first inductor, and a second inductor. The variable resistor may be configured to compensate for resistive losses within the configurable notch filter. The variable capacitor may be configured to determine the set of frequencies to be attenuated.
摘要翻译：公开了一种用于对诸如具有可配置陷波滤波器的发射通信信号的信号进行滤波的方法和装置。可配置的陷波滤波器可以衰减所选陷波频率附近的一组频率。在一些实施例中，可配置陷波滤波器可以包括可变电阻器，可变电容器，第一电感器和第二电感器。可变电阻器可以被配置为补偿可配置陷波滤波器内的电阻损耗。可变电容器可以被配置为确定要衰减的频率集合。

3. 发明申请

US20150230185A1 Low Noise Amplifier Device with Auxiliary Gain Control 审中-公开
标题翻译：具有辅助增益控制的低噪声放大器装置
公开(公告)号：US20150230185A1
公开(公告)日：2015-08-13
申请号：US14179303
申请日：2014-02-12
申请人： QUALCOMM Incorporated
发明人： Mohammad Bagher Vahid Far , Amirpouya Kavousian , Alireza Khalili , Yashar Rajavi
IPC分类号： H04W52/02
CPC分类号： H04W52/0274 , H03F1/086 , H03F1/26 , H03F1/30 , H03F3/193 , H03F3/60 , H04W52/0261 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/23
摘要： An apparatus includes a main low noise amplifier and an auxiliary low noise amplifier. The auxiliary low noise amplifier is coupled in parallel with the main low noise amplifier. The auxiliary low noise amplifier includes a common source degeneration resistor.
摘要翻译：一种装置包括主低噪声放大器和辅助低噪声放大器。辅助低噪声放大器与主低噪声放大器并联耦合。辅助低噪声放大器包括一个公共源极退化电阻。

4. 发明授权

US09455723B2 Leakage compensation circuit for phase-locked loop (PLL) large thin oxide capacitors 有权
标题翻译：漏电补偿电路用于锁相环（PLL）大型薄氧化物电容器
公开(公告)号：US09455723B2
公开(公告)日：2016-09-27
申请号：US14743360
申请日：2015-06-18
申请人： QUALCOMM Incorporated
发明人： Mohammad Bagher Vahid Far , Ara Bicakci , Alireza Khalili , Ashkan Borna , Thinh Cat Nguyen
IPC分类号： H03L7/06 , H03L7/08 , H03L7/093 , H02M3/07
CPC分类号： H03L7/0802 , H02M3/07 , H03L7/0891 , H03L7/093
摘要： Certain aspects of the present disclosure provide methods and apparatus for compensating, or at least adjusting, for capacitor leakage. One example method generally includes determining a leakage voltage corresponding to a leakage current of a capacitor in a filter for a phase-locked loop (PLL), wherein the determining comprises closing a set of switches for discontinuous sampling of the leakage voltage; based on the sampled leakage voltage, generating a sourced current approximately equal to the leakage current; and injecting the sourced current into the capacitor.
摘要翻译：本公开的某些方面提供了用于补偿或至少调整电容器泄漏的方法和装置。一个示例性方法通常包括确定对应于用于锁相环（PLL）的滤波器中的电容器的漏电流的泄漏电压，其中所述确定包括闭合一组开关以不连续地采样泄漏电压; 基于采样的泄漏电压，产生大致等于泄漏电流的源电流; 并将源电流注入电容器。

5. 发明授权

US09401680B2 Temperature dependent amplifier biasing 有权
标题翻译：温度依赖放大器偏置
公开(公告)号：US09401680B2
公开(公告)日：2016-07-26
申请号：US14158318
申请日：2014-01-17
申请人： QUALCOMM Incorporated
发明人： Jungdong Park , Cheng-Han Wang , Hong Sun Kim , Mohammad Bagher Vahid Far
IPC分类号： H03F3/04 , H03F1/30 , H03F3/193 , H03F3/195 , H03F3/24
CPC分类号： H03F1/301 , H03F1/30 , H03F3/193 , H03F3/195 , H03F3/245 , H03F2200/18 , H03F2200/294 , H03F2200/411 , H03F2200/447 , H03F2200/451
摘要： An apparatus includes a first bias circuit configured to generate a first current that varies with temperature according to a first slope. The apparatus also includes a second bias circuit configured to generate a second current that varies with temperature according to a second slope. The apparatus further includes a low noise amplifier including a transconductance stage that is responsive to an output of the first bias circuit. The apparatus also includes a load coupled to an output of the low noise amplifier and responsive to an output of the second bias circuit.
摘要翻译：一种装置包括：第一偏置电路，被配置为产生根据第一斜率随温度变化的第一电流。该装置还包括第二偏置电路，其被配置为产生根据第二斜率随温度变化的第二电流。该装置还包括低噪声放大器，其包括响应于第一偏置电路的输出的跨导级。该装置还包括负载耦合到低噪声放大器的输出并响应于第二偏置电路的输出。

6. 发明授权

US09300249B2 Differential crystal oscillator circuit 有权
标题翻译：差分晶振电路
公开(公告)号：US09300249B2
公开(公告)日：2016-03-29
申请号：US14338241
申请日：2014-07-22
申请人： QUALCOMM Incorporated
发明人： Yashar Rajavi , Amirpouya Kavousian , Alireza Khalili , Mohammad Bagher Vahid Far , Abbas Komijani
IPC分类号： H03B5/32 , H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B5/36 , H03B2200/004 , H03B2200/0094
摘要： A differential crystal oscillator circuit, including: first and second output terminals; a cross-coupled oscillation unit including first and second transistors cross-coupled to the first and second output terminals; first and second metal-oxide semiconductor field-effect transistor (MOSFET) diodes, each MOSFET diode including a resistor connected between gate and drain terminals, wherein the first MOSFET diode couples to the first transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the first transistor, wherein the second MOSFET diode couples to the second transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the second transistor; and a reference resonator coupled between the first and second output terminals to establish an oscillation frequency.
摘要翻译：一种差分晶体振荡器电路，包括：第一和第二输出端子; 交叉耦合振荡单元，包括交叉耦合到第一和第二输出端的第一和第二晶体管; 第一和第二金属氧化物半导体场效应晶体管（MOSFET）二极管，每个MOSFET二极管包括连接在栅极和漏极端子之间的电阻器，其中第一MOSFET二极管耦合到第一晶体管以在低频和高电平下提供低阻抗负载在第一晶体管的较高频率处的阻抗负载，其中所述第二MOSFET二极管耦合到所述第二晶体管，以在低频处提供低阻抗负载，并以较高频率向所述第二晶体管提供高阻抗负载; 以及耦合在第一和第二输出端子之间以建立振荡频率的参考谐振器。

7. 发明申请

US20150207531A1 FILTERING BLOCKER COMPONENTS OF A SIGNAL 有权
标题翻译：过滤屏障组件的信号
公开(公告)号：US20150207531A1
公开(公告)日：2015-07-23
申请号：US14158225
申请日：2014-01-17
申请人： QUALCOMM Incorporated
发明人： Mohammad Bagher Vahid Far , Abbas Komijani , Amirpouya Kavousian , Mazhareddin Taghivand , Alireza Khalili
IPC分类号： H04B1/12
CPC分类号： H04B1/12 , H03F1/223 , H03F1/3223 , H03F1/56 , H03F3/195 , H03F3/211 , H03F3/68 , H03F2200/171 , H03F2200/222 , H03F2200/294 , H03H11/00 , H03H11/04
摘要： An apparatus includes a main amplifier configured to receive an input signal. The main amplifier is also configured to generate an output signal. The apparatus also includes an auxiliary path configured to phase-shift the input signal to generate a cancellation signal to reduce or cancel a blocker component of the output signal.
摘要翻译：一种装置包括：主放大器，被配置为接收输入信号。主放大器还被配置为产生输出信号。该装置还包括辅助路径，其被配置为对输入信号进行相移以产生消除信号以减少或消除输出信号的阻塞分量。

8. 发明授权

US09647638B2 Architecture to reject near end blockers and transmit leakage 有权
公开(公告)号：US09647638B2
公开(公告)日：2017-05-09
申请号：US14331685
申请日：2014-07-15
申请人： QUALCOMM Incorporated
发明人： Mohammad Bagher Vahid Far , Cheng-Han Wang , Jesse Aaron Richmond , Thinh Cat Nguyen , Abbas Komijani , Yashar Rajavi , Alireza Khalili
IPC分类号： G06F17/10 , H03H11/04 , H03H11/12 , H04B1/10 , H04B1/525
CPC分类号： H03H11/0433 , H03H11/1252 , H04B1/109 , H04B1/525
摘要： A method and apparatus for minimizing transmit signal interference is provided. The method includes the steps of: receiving a signal and amplifying the received signal. The received signal is then mixed with an intermediate frequency signal to obtain a baseband modulated signal. The baseband modulated signal is first filtered in an RC filter. The resulting signal is then divided by a preselected amount and the first divided portion is sent to a main path of a biquad filter, which produces a first stage biquad filtered signal. The second portion of the divided signal is sent to an auxiliary path of the biquad filter, and produces a second filtered signal. The first and second signals are then recombined and sent to the second stage of the biquad filter, where further filtering takes place.

9. 发明申请

US20160028349A1 Differential Crystal Oscillator Circuit 有权
标题翻译：差分晶振电路
公开(公告)号：US20160028349A1
公开(公告)日：2016-01-28
申请号：US14338241
申请日：2014-07-22
申请人： QUALCOMM Incorporated
发明人： Yashar Rajavi , Amirpouya Kavousian , Alireza Khalili , Mohammad Bagher Vahid Far , Abbas Komijani
IPC分类号： H03B5/36
CPC分类号： H03B5/364 , H03B5/06 , H03B5/36 , H03B2200/004 , H03B2200/0094
摘要： A differential crystal oscillator circuit, including: first and second output terminals; a cross-coupled oscillation unit including first and second transistors cross-coupled to the first and second output terminals; first and second metal-oxide semiconductor field-effect transistor (MOSFET) diodes, each MOSFET diode including a resistor connected between gate and drain terminals, wherein the first MOSFET diode couples to the first transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the first transistor, wherein the second MOSFET diode couples to the second transistor to provide low-impedance load at low frequencies and high-impedance load at higher frequencies to the second transistor; and a reference resonator coupled between the first and second output terminals to establish an oscillation frequency.
摘要翻译：一种差分晶体振荡器电路，包括：第一和第二输出端子; 交叉耦合振荡单元，包括交叉耦合到第一和第二输出端的第一和第二晶体管; 第一和第二金属氧化物半导体场效应晶体管（MOSFET）二极管，每个MOSFET二极管包括连接在栅极和漏极端子之间的电阻器，其中第一MOSFET二极管耦合到第一晶体管以在低频和高电平下提供低阻抗负载在第一晶体管的较高频率处的阻抗负载，其中所述第二MOSFET二极管耦合到所述第二晶体管，以在低频处提供低阻抗负载，并以较高频率向所述第二晶体管提供高阻抗负载; 以及耦合在第一和第二输出端子之间以建立振荡频率的参考谐振器。

10. 发明授权

US09246435B1 Method to pre-charge crystal oscillators for fast start-up 有权
标题翻译：晶体振荡器预充电快速启动的方法
公开(公告)号：US09246435B1
公开(公告)日：2016-01-26
申请号：US14617716
申请日：2015-02-09
申请人： QUALCOMM Incorporated
发明人： Amirpouya Kavousian , Yashar Rajavi , Alireza Khalili , Mohammad Bagher Vahid Far , Abbas Komijani
IPC分类号： H03B5/06 , H03B5/36 , H03K3/03
CPC分类号： H03B5/06 , H03B5/362 , H03B5/364 , H03B5/366 , H03B2200/0094 , H03K3/014 , H03K3/0307 , H03K3/0315 , H03L3/00 , H03L7/00
摘要： A method and apparatus for charging a crystal oscillator are provided. A voltage generating module outputs a ramp voltage signal to a ring oscillator. The ring oscillator generates and outputs a waveform based on the ramp voltage signal. The ramp voltage signal facilitates the ring oscillator to output the waveform at a frequency that varies with time, wherein the varying frequency is within a frequency range of the crystal oscillator. An inverter generates a digital input signal based on the waveform. The digital input signal is sent to an input of the crystal oscillator for charging the crystal oscillator. A feedback module outputs a feedback signal based on the digital input signal, wherein the feedback signal controls the voltage generating module to generate a fixed voltage signal that facilitates the ring oscillator to output the waveform at a frequency that is equal to a resonance frequency of the crystal oscillator.
摘要翻译：提供了一种用于对晶体振荡器充电的方法和装置。电压产生模块向环形振荡器输出斜坡电压信号。环形振荡器产生并输出基于斜坡电压信号的波形。斜坡电压信号有助于环形振荡器以随时间变化的频率输出波形，其中变化的频率在晶体振荡器的频率范围内。逆变器根据波形产生数字输入信号。数字输入信号被发送到晶体振荡器的输入端，用于对晶体振荡器充电。反馈模块基于数字输入信号输出反馈信号，其中反馈信号控制电压产生模块以产生固定电压信号，其有助于环形振荡器以等于的频率的频率输出波形晶体振荡器。

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