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1. 发明授权

US08058901B2 Latch structure, frequency divider, and methods for operating same 有权
标题翻译：锁存结构，分频器和操作方法
公开(公告)号：US08058901B2
公开(公告)日：2011-11-15
申请号：US12552810
申请日：2009-09-02
申请人： Kun Zhang , Kenneth Charles Barnett
发明人： Kun Zhang , Kenneth Charles Barnett
IPC分类号： H03K19/173
CPC分类号： H03K3/356121 , H03K5/1565 , H03K23/544
摘要： A latch includes three circuits. The first circuit drives a first output (QB) to a first level when a first input (D) and a first clock phase (CK) are both low, to a second level when D and CK are both high, and provides high impedance (HI-Z) when different logic levels are applied to D and CK. The second circuit drives a second output (Q) to the first level when a third input (DB) and a complimentary clock phase (CKB) are both low, to the second level when DB and CKB are both high, and provides HI-Z when different logic levels are applied to DB and CKB. The third circuit maintains voltages of Q and QB when the first and second circuits provide HI-Z at Q and QB. Odd-number dividers constructed with such latches produce 50% duty cycle operation without restricting output pulse widths to integer multiples of input periods.
摘要翻译：闩锁包括三个电路。当D和CK均为高电平时，当第一输入（D）和第一时钟相位（CK）均为低电平时，第一电路将第一输出（QB）驱动到第一电平，并提供高阻抗（当对D和CK应用不同的逻辑电平时，HI-Z）。当DB和CKB均为高电平时，第三输入（DB）和互补时钟相位（CKB）均为低电平时，第二电路将第二输出（Q）驱动到第一电平，并提供HI-Z 当DB和CKB应用不同的逻辑电平时。当第一和第二电路在Q和QB提供HI-Z时，第三电路维持Q和QB的电压。使用这种锁存器构造的奇数分频器可以产生50％的占空比运算，而不会将输出脉冲宽度限制为输入周期的整数倍。

2. 发明授权

US08665028B2 Amplifier with integrated filter 有权
标题翻译：带集成滤波器的放大器
公开(公告)号：US08665028B2
公开(公告)日：2014-03-04
申请号：US13543532
申请日：2012-07-06
申请人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
发明人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
IPC分类号： H03F3/04
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.
摘要翻译：描述了具有集成滤波器（例如，LNA）的放大器。在一种设计中，放大器可以包括增益级，滤波级和缓冲级。增益级可以为输入信号提供信号放大。滤波器级可以为输入信号提供滤波。缓冲级可以缓冲来自滤波级的滤波信号。放大器还可以包括第二滤波器级和第二缓冲级。第二滤波器级可以为输入信号提供额外的滤波。第二缓冲级可以缓冲来自第二滤波级的第二滤波信号。所有级可以堆叠并耦合在电源电压和电路接地之间。滤波器级可以实现椭圆形低通滤波器。每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

3. 发明申请

US20120274403A1 AMPLIFIER WITH INTEGRATED FILTER 有权
标题翻译：具有集成滤波器的放大器
公开(公告)号：US20120274403A1
公开(公告)日：2012-11-01
申请号：US13543532
申请日：2012-07-06
申请人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
发明人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sengupta , Gurkanwal Singh Sahota
IPC分类号： H03G3/30
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.
摘要翻译：描述了具有集成滤波器（例如，LNA）的放大器。在一种设计中，放大器可以包括增益级，滤波级和缓冲级。增益级可以为输入信号提供信号放大。滤波器级可以为输入信号提供滤波。缓冲级可以缓冲来自滤波级的滤波信号。放大器还可以包括第二滤波器级和第二缓冲级。第二滤波器级可以为输入信号提供额外的滤波。第二缓冲级可以缓冲来自第二滤波级的第二滤波信号。所有级可以堆叠并耦合在电源电压和电路接地之间。滤波器级可以实现椭圆形低通滤波器。每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

4. 发明申请

US20080224770A1 ACTIVE CIRCUITS WITH ISOLATION SWITCHES 有权
标题翻译：具有隔离开关的有源电路
公开(公告)号：US20080224770A1
公开(公告)日：2008-09-18
申请号：US11832581
申请日：2007-08-01
申请人： Tae Wook Kim , Kenneth Charles Barnett , Harish Muthali
发明人： Tae Wook Kim , Kenneth Charles Barnett , Harish Muthali
IPC分类号： H03F1/14
CPC分类号： H03F3/72 , H03F1/342 , H03F3/211 , H03F3/45475 , H03F3/68 , H03F2203/21142 , H03F2203/45731
摘要： Active circuits with isolation switches are described. In one design, an apparatus includes first and second amplifiers coupled in parallel. Each amplifier receives an input signal and provides an output signal. Each amplifier has a switch that isolates the amplifier when the amplifier is turned off. The first and second amplifiers may be high and low gain amplifiers or two low noise amplifiers (LNAs). The first and second amplifiers may be for different communication systems, different frequency bands, and/or different gain ranges. In general, any number of amplifiers may be coupled in parallel, and each amplifier may have a switch to isolate that amplifier when turned off. A switch for an amplifier may be a shunt switch coupled between an internal node of the amplifier and ground. The shunt switch may be closed when the amplifier is turned off and may be opened when the amplifier is turned on.
摘要翻译：描述了具有隔离开关的有源电路。在一种设计中，装置包括并联耦合的第一和第二放大器。每个放大器接收输入信号并提供输出信号。每个放大器都有一个开关，当放大器关闭时，隔离放大器。第一和第二放大器可以是高和低增益放大器或两个低噪声放大器（LNA）。第一和第二放大器可以用于不同的通信系统，不同的频带和/或不同的增益范围。通常，任何数量的放大器可以并联耦合，并且每个放大器可以具有开关以在关断时隔离该放大器。用于放大器的开关可以是耦合在放大器的内部节点和地之间的并联开关。当放大器关闭时，并联开关可能关闭，并且当放大器接通时可能会断开分流开关。

5. 发明授权

US08237509B2 Amplifier with integrated filter 有权
标题翻译：带集成滤波器的放大器
公开(公告)号：US08237509B2
公开(公告)日：2012-08-07
申请号：US11852946
申请日：2007-09-10
申请人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sangupta , Gurkanwal Singh Sahota
发明人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sangupta , Gurkanwal Singh Sahota
IPC分类号： H03F3/04
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.
摘要翻译：描述了具有集成滤波器（例如，LNA）的放大器。在一种设计中，放大器可以包括增益级，滤波级和缓冲级。增益级可以为输入信号提供信号放大。滤波器级可以为输入信号提供滤波。缓冲级可以缓冲来自滤波级的滤波信号。放大器还可以包括第二滤波器级和第二缓冲级。第二滤波器级可以为输入信号提供额外的滤波。第二缓冲级可以缓冲来自第二滤波级的第二滤波信号。所有级可以堆叠并耦合在电源电压和电路接地之间。滤波器级可以实现椭圆形低通滤波器。每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

6. 发明申请

US20120017131A1 METHODS AND APPARATUS FOR PROVIDING A BUILT-IN SELF TEST 有权
标题翻译：提供自建自检的方法和设备
公开(公告)号：US20120017131A1
公开(公告)日：2012-01-19
申请号：US12836462
申请日：2010-07-14
申请人： Gaurab Banerjee , Manas Behera , Kenneth Charles Barnett
发明人： Gaurab Banerjee , Manas Behera , Kenneth Charles Barnett
IPC分类号： G01R31/28 , G06F11/30
CPC分类号： G01R31/3187 , G06F11/27
摘要： A built-in self test (BiST) system is described. The BiST system includes a circuit-under-test. The BiST system also includes one or more embedded sensors. Each of the embedded sensors includes one or more switches connected to one or more nodes within the circuit-under-test. The BiST system further includes a signal generator. The BiST system also includes a bus interface. The bus interface provides for external access of the BiST system.
摘要翻译：描述了内置的自检（BiST）系统。 BiST系统包括一个电路不足测试。 BiST系统还包括一个或多个嵌入式传感器。每个嵌入式传感器包括连接到被测电路中的一个或多个节点的一个或多个开关。 BiST系统还包括信号发生器。 BiST系统还包括总线接口。总线接口提供BiST系统的外部访问。

7. 发明申请

US20110267144A1 NOISE-CANCELING FOR DIFFERENTIAL AMPLIFIERS REQUIRING NO EXTERNAL MATCHING 有权
标题翻译：噪声消除不需外部匹配的差分放大器
公开(公告)号：US20110267144A1
公开(公告)日：2011-11-03
申请号：US12772924
申请日：2010-05-03
申请人： Manas Behera , Harish S. Muthali , Kenneth Charles Barnett
发明人： Manas Behera , Harish S. Muthali , Kenneth Charles Barnett
IPC分类号： H03F3/45 , H03F1/00 , H03F3/16
CPC分类号： H03F3/3081 , H03F3/189
摘要： A differential Low Noise Amplifier (LNA) includes a first stage of resistive feedback amplifiers and second stage of complementary amplifiers, where the outputs of the first stage are coupled to the inputs of the second stage in a cross-coupled fashion. An inductive load, such as a transformer, combines signals output from the complementary amplifiers of the second stage. In one example, the LNA has an input impedance of less than 75 ohms, a noise factor of less than 2 dB, and a gain of more than 20 dB. Due to the low input impedance, the LNA is usable to amplify a signal received from a source having a similar low impedance without the use of an impedance matching network between the output of the source and the input of the LNA.
摘要翻译：差分低噪声放大器（LNA）包括第一级电阻反馈放大器和第二级互补放大器，其中第一级的输出以交叉耦合的方式耦合到第二级的输入。诸如变压器的感性负载组合从第二级的互补放大器输出的信号。在一个示例中，LNA的输入阻抗小于75欧姆，噪声系数小于2dB，增益大于20dB。由于低输入阻抗，LNA可用于放大从具有相似低阻抗的源接收的信号，而不需要在源的输出和LNA的输入之间使用阻抗匹配网络。

8. 发明申请

US20080220735A1 FREQUENCY SELECTIVE AMPLIFIER WITH WIDE-BAND IMPEDANCE AND NOISE MATCHING 有权
标题翻译：具有宽带阻抗和噪声匹配的频率选择放大器
公开(公告)号：US20080220735A1
公开(公告)日：2008-09-11
申请号：US11684120
申请日：2007-03-09
申请人： Tae Wook Kim , Kenneth Charles Barnett
发明人： Tae Wook Kim , Kenneth Charles Barnett
IPC分类号： H04B1/18
CPC分类号： H03F1/56 , H03F3/45188 , H03F2203/45296 , H03F2203/45316 , H03F2203/45511 , H03F2203/45512 , H03F2203/45704 , H03H11/1291
摘要： This disclosure is directed to a frequency-selective low noise amplifier (LNA) with wide-band impedance and noise matching. The LNAS may include a closed loop circuit that supports wideband input matching. For example, the closed loop circuit may be configure to impedance match an input signal and provide a low noise figure. In addition, the LNA may include an open loop circuit that amplifies the input signal and provides a high output impedance. The open loop circuit may further include a selectivity filter that filters out frequencies outside a desired frequency band. The LNA may drive a tunable band-pass filter via the open loop circuit.
摘要翻译：本公开涉及具有宽带阻抗和噪声匹配的频率选择性低噪声放大器（LNA）。 LNAS可以包括支持宽带输入匹配的闭环电路。例如，闭环电路可以被配置为阻抗匹配输入信号并提供低噪声系数。此外，LNA可以包括放大输入信号并提供高输出阻抗的开环电路。开环电路还可以包括滤除期望频带外的频率的选择性滤波器。 LNA可以通过开环电路驱动可调谐带通滤波器。

9. 发明申请

US20080204148A1 AMPLIFIER WITH INTEGRATED FILTER 有权
标题翻译：具有集成滤波器的放大器
公开(公告)号：US20080204148A1
公开(公告)日：2008-08-28
申请号：US11852946
申请日：2007-09-10
申请人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sangupta , Gurkanwal Singh Sahota
发明人： Tae Wook Kim , Guy Klemens , Kenneth Charles Barnett , Susanta Sangupta , Gurkanwal Singh Sahota
IPC分类号： H03F3/187
CPC分类号： H03F1/223 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/168 , H03F2200/294 , H03F2200/451 , H03F2203/45034 , H03F2203/45058 , H03F2203/45138 , H03F2203/45296 , H03F2203/45301 , H03F2203/45316 , H03F2203/45396 , H03F2203/7239 , H03G1/0017 , H03G1/0029 , H03G1/0088 , H03G3/3052 , H03G3/3078
摘要： An amplifier with integrated filter (e.g., an LNA) is described. In one design, the amplifier may include a gain stage, a filter stage, and a buffer stage. The gain stage may provide signal amplification for an input signal. The filter stage may provide filtering for the input signal. The buffer stage may buffer a filtered signal from the filter stage. The amplifier may further include a second filter stage and a second buffer stage. The second filter stage may provide additional filtering for the input signal. The second buffer stage may buffer a second filtered signal from the second filter stage. All of the stages may be stacked and coupled between a supply voltage and circuit ground. The filter stage(s) may implement an elliptical lowpass filter. Each filter stage may include an inductor and a capacitor coupled in parallel and forming a resonator tank to attenuate interfering signals.
摘要翻译：描述了具有集成滤波器（例如，LNA）的放大器。在一种设计中，放大器可以包括增益级，滤波级和缓冲级。增益级可以为输入信号提供信号放大。滤波器级可以为输入信号提供滤波。缓冲级可以缓冲来自滤波级的滤波信号。放大器还可以包括第二滤波器级和第二缓冲级。第二滤波器级可以为输入信号提供额外的滤波。第二缓冲级可以缓冲来自第二滤波级的第二滤波信号。所有级可以堆叠并耦合在电源电压和电路接地之间。滤波器级可以实现椭圆形低通滤波器。每个滤波器级可以包括并联耦合的电感器和电容器，并形成谐振器箱以衰减干扰信号。

10. 发明授权

US08310309B2 Noise-canceling for differential amplifiers requiring no external matching 有权
标题翻译：不需要外部匹配的差分放大器的噪声消除
公开(公告)号：US08310309B2
公开(公告)日：2012-11-13
申请号：US12772924
申请日：2010-05-03
申请人： Manas Behera , Harish S Muthali , Kenneth Charles Barnett
发明人： Manas Behera , Harish S Muthali , Kenneth Charles Barnett
IPC分类号： H03F3/45
CPC分类号： H03F3/3081 , H03F3/189
摘要： A differential Low Noise Amplifier (LNA) includes a first stage of resistive feedback amplifiers and second stage of complementary amplifiers, where the outputs of the first stage are coupled to the inputs of the second stage in a cross-coupled fashion. An inductive load, such as a transformer, combines signals output from the complementary amplifiers of the second stage. In one example, the LNA has an input impedance of less than 75 ohms, a noise factor of less than 2 dB, and a gain of more than 20 dB. Due to the low input impedance, the LNA is usable to amplify a signal received from a source having a similar low impedance without the use of an impedance matching network between the output of the source and the input of the LNA.
摘要翻译：差分低噪声放大器（LNA）包括第一级电阻反馈放大器和第二级互补放大器，其中第一级的输出以交叉耦合的方式耦合到第二级的输入。诸如变压器的感性负载组合从第二级的互补放大器输出的信号。在一个示例中，LNA的输入阻抗小于75欧姆，噪声系数小于2dB，增益大于20dB。由于低输入阻抗，LNA可用于放大从具有相似低阻抗的源接收的信号，而不需要在源的输出和LNA的输入之间使用阻抗匹配网络。

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