公开(公告)号：US20130194043A1

公开(公告)日：2013-08-01

申请号：US13358701

申请日：2012-01-26

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03L7/00 ,  H03K3/03

CPC分类号： H03K3/0322 ,  H03L7/0995

摘要： In one embodiment, a voltage-controlled oscillator (VCO) is provided that includes: a plurality of differential inverters coupled to form a loop, each differential inverter having a differential pair of transistors configured to steer a tail current from a current source, the current source sourcing the tail current responsive to a bias voltage, wherein each transistor in the differential pair couples to a power source through a corresponding switching-capacitor circuit; and a bias circuit configured to generate the bias voltage such that a transconductance for each transistor in the differential pairs is proportional to a factor that is a function of a ratio of transistor widths within the bias circuit.

摘要翻译： 在一个实施例中，提供了压控振荡器（VCO），其包括：耦合以形成环路的多个差分逆变器，每个差分反相器具有被配置为引导来自电流源的尾电流的差分对晶体管，所述电流 响应于偏置电压源来源尾电流，其中差分对中的每个晶体管通过相应的开关电容器电路耦合到电源; 以及偏置电路，被配置为产生偏置电压，使得差分对中的每个晶体管的跨导与作为偏置电路内的晶体管宽度的比率的函数的因子成比例。

公开(公告)号：US20080258823A1

公开(公告)日：2008-10-23

申请号：US11738333

申请日：2007-04-20

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03L7/099 ,  H03K3/03 ,  H03L7/08

CPC分类号： H03K3/0322 ,  H03L7/0995

摘要： In one embodiment, a voltage-controlled oscillator (VCO) is provided that includes: a plurality of differential inverter stages coupled to form a loop, each differential inverter stage having including a switched capacitor circuit configured to control a signal delay through the differential inverter stage responsive to a control circuit, whereby an output frequency for the VCO is inherently compensated against changes in semiconductor process variations and thermal variations.

摘要翻译： 在一个实施例中，提供了一种压控振荡器（VCO），其包括：耦合以形成环路的多个差分逆变器级，每个差分逆变器级包括开关电容器电路，其被配置为通过差分逆变器级控制信号延迟 响应于控制电路，由此VCO的输出频率固有地补偿了半导体工艺变化和热变化的变化。

公开(公告)号：US07782111B2

公开(公告)日：2010-08-24

申请号：US11968072

申请日：2007-12-31

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： G06F1/04

CPC分类号： H03K5/1534 ,  H03K2005/00293 ,  H04B1/7174

摘要： A pulse generator is provided that includes: a current source, a source follower whose output controls the gate of a FET and a differential stage whose input voltage consists of inverting square waves and its output voltage consists of extremely narrow pulses widths, for example, of 30 to 40 ps and amplitude of 1.5 Volts.

摘要翻译： 提供脉冲发生器，其包括：电流源，其输出控制FET的栅极的源极跟随器及其输入电压由反相方波组成的差分级，其输出电压由极窄的脉冲宽度组成，例如 30〜40ps，振幅1.5伏。

公开(公告)号：US07760032B2

公开(公告)日：2010-07-20

申请号：US11738333

申请日：2007-04-20

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03K3/03

CPC分类号： H03K3/0322 ,  H03L7/0995

摘要： In one embodiment, a voltage-controlled oscillator (VCO) is provided that includes: a plurality of differential inverter stages coupled to form a loop, each differential inverter stage having including a switched capacitor circuit configured to control a signal delay through the differential inverter stage responsive to a control circuit, whereby an output frequency for the VCO is inherently compensated against changes in semiconductor process variations and thermal variations.

摘要翻译： 在一个实施例中，提供了一种压控振荡器（VCO），其包括：耦合以形成环路的多个差分逆变器级，每个差分逆变器级包括开关电容器电路，其被配置为通过差分逆变器级控制信号延迟 响应于控制电路，由此VCO的输出频率固有地补偿了半导体工艺变化和热变化的变化。

公开(公告)号：US20080157878A1

公开(公告)日：2008-07-03

申请号：US11618812

申请日：2006-12-30

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03L7/08 ,  H03K3/023

CPC分类号： H03K3/0322 ,  H03L7/0995

摘要： In one embodiment, a voltage-controlled oscillator is provided having an output signal whose frequency is responsive to a tuning signal and is independent of amplitude of oscillation. The voltage-controlled oscillator includes: a plurality of differential inverter stages coupled to form a loop, each differential inverter stage having a differential pair of transistors configured to steer a tail current from a current source, the current source sourcing the tail current responsive to a feedback signal; and a control circuit configured to generate the feedback signal responsive to a reference signal such that an amplitude of the output signal is independent of the tuning signal and depends on the reference signal, and the frequency of oscillation is decoupled from the amplitude of oscillation.

摘要翻译： 在一个实施例中，提供了具有其频率响应于调谐信号并且与振荡幅度无关的输出信号的压控振荡器。 压控振荡器包括：耦合以形成环路的多个差分逆变器级，每个差分逆变器级具有被配置为引导来自电流源的尾电流的差分对晶体管，所述电流源响应于 反馈信号; 以及控制电路，其被配置为响应于参考信号产生所述反馈信号，使得所述输出信号的幅度与所述调谐信号无关，并且取决于所述参考信号，并且所述振荡频率与所述振荡幅度分离。

公开(公告)号：US08970311B2

公开(公告)日：2015-03-03

申请号：US13406228

申请日：2012-02-27

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03K3/03

CPC分类号： H03L1/00 ,  H03L7/0995

摘要： In one embodiment, a voltage-controlled oscillator (VCO) is provided having an output signal having a frequency responsive to a tuning signal. The VCO includes: a plurality of inverters coupled to form a loop, each differential inverter having a differential pair of transistors configured to steer a tail current from a current source, the current source sourcing the tail current responsive to a bias voltage, each inverter stage including a plurality of switched-capacitor circuits configured to control a signal delay through the inverter stage response to the tuning signal so as to control the frequency of the output signal; and a bias circuit configured to generate the bias voltage responsive to a reference signal such that an amplitude of the output signal is substantially independent of the output signal frequency and depends upon the reference signal.

摘要翻译： 在一个实施例中，提供了具有响应于调谐信号的频率的输出信号的压控振荡器（VCO）。 VCO包括：耦合以形成环路的多个反相器，每个差分反相器具有被配置为控制来自电流源的尾电流的差分对晶体管，响应于偏置电压源电流尾电流的电流源，每个反相器级 包括多个开关电容器电路，其被配置为通过所述逆变器级控制对所述调谐信号的响应的信号延迟，以便控制所述输出信号的频率; 以及偏置电路，被配置为响应于参考信号产生偏置电压，使得输出信号的幅度基本上与输出信号频率无关，并且取决于参考信号。

公开(公告)号：US20130300476A1

公开(公告)日：2013-11-14

申请号：US13466830

申请日：2012-05-08

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03L7/099 ,  H03K3/03 ,  H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B2200/0062 ,  H03K3/011 ,  H03K3/0322 ,  H03L1/00 ,  H03L7/099 ,  H03L7/0995

摘要： LC tank and ring-based VCOs are disclosed that each include a differential pair of transistors for steering a tail current generated by a current source responsive to a bias voltage. A biasing circuit generates the bias voltage such that a transconductance for the transistors in the differential pairs is inversely proportional to a resistance.

摘要翻译： 公开了LC箱和环形VCO，每个VCO包括用于响应于偏置电压转向由电流源产生的尾电流的差分对晶体管。 偏置电路产生偏置电压，使得差分对中的晶体管的跨导与电阻成反比。

公开(公告)号：US07760018B2

公开(公告)日：2010-07-20

申请号：US12347923

申请日：2008-12-31

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03F3/217

CPC分类号： H03F3/2171

摘要： In one embodiment, a switching power amplifier is provided that includes: a power switch coupled between a power supply node and ground, wherein the power switch is configured to be cycled on and off responsive to an input signal voltage; and a matching network coupled between a terminal of the power switch and an output node, wherein the matching network includes: a first capacitor coupled between the terminal of the power switch and ground; a second capacitor having a first terminal and an opposing second terminal, the second terminal being coupled to ground, the second capacitor having a greater capacitance than the first capacitor; and a second switch coupled between the first terminal of the second capacitor and the terminal of the power switch, the second switch being configured to be cycled on and off responsive to a switching signal voltage such that the second switch is turned on before the power switch is turned off and such that the second switch is turned off after a current through the power switch is substantially zero responsive to the turning off of the power switch.

摘要翻译： 在一个实施例中，提供了开关功率放大器，其包括：耦合在电源节点和地之间的功率开关，其中所述功率开关被配置为响应于输入信号电压而循环地进行循环; 以及耦合在所述电源开关的端子和输出节点之间的匹配网络，其中所述匹配网络包括：耦合在所述电源开关的端子和地之间的第一电容器; 具有第一端子和相对的第二端子的第二电容器，所述第二端子耦合到地，所述第二电容器具有比所述第一电容器更大的电容; 以及第二开关，其耦合在所述第二电容器的所述第一端子和所述电源开关的端子之间，所述第二开关被配置为响应于开关信号电压而被开启和关闭，使得所述第二开关在所述电源开关 并且使得第二开关在通过电源开关的电流响应于电源开关的关断后基本为零时被关闭。

公开(公告)号：US08975977B2

公开(公告)日：2015-03-10

申请号：US13466830

申请日：2012-05-08

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： H03L7/099

CPC分类号： H03B5/1228 ,  H03B5/1215 ,  H03B5/1243 ,  H03B2200/0062 ,  H03K3/011 ,  H03K3/0322 ,  H03L1/00 ,  H03L7/099 ,  H03L7/0995

摘要： LC tank and ring-based VCOs are disclosed that each include a differential pair of transistors for steering a tail current generated by a current source responsive to a bias voltage. A biasing circuit generates the bias voltage such that a transconductance for the transistors in the differential pairs is inversely proportional to a resistance.

摘要翻译： 公开了LC箱和环形VCO，每个VCO包括用于响应于偏置电压转向由电流源产生的尾电流的差分对晶体管。 偏置电路产生偏置电压，使得差分对中的晶体管的跨导与电阻成反比。

公开(公告)号：US20120025899A1

公开(公告)日：2012-02-02

申请号：US12848006

申请日：2010-07-30

申请人： Mohammad Ardehali

发明人： Mohammad Ardehali

IPC分类号： G05F1/10 ,  H04B1/10

CPC分类号： H03H11/0472 ,  H03H11/0433 ,  H03H2210/021

摘要： A transconductance-capacitance (Gm-C) filter of arbitrary order is provided that is biased by a bias circuit such that the Gm-C filter is robust to variations in process corner and temperature as well as input supply noise. The bias circuit includes a biased transistor that has a width-to-length ratio that is a factor X times larger than a corresponding transistor in the Gm-C filter. The biased transistor couples to ground through a switched capacitor circuit.

摘要翻译： 提供由偏置电路偏置的任意阶数的跨导电容（Gm-C）滤波器，使得Gm-C滤波器对于工艺角和温度的变化以及输入电源噪声都是鲁棒的。 偏置电路包括偏置晶体管，其宽度比长度比Gm-C滤波器中的对应晶体管大X倍。 偏置晶体管通过开关电容器电路耦合到地。