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11.发明授权公开(公告)号：US09257939B1
公开(公告)日：2016-02-09
申请号：US14472653
申请日：2014-08-29
发明人： Jing Zhang , Kenneth K. O , Navneet Sharma
CPC分类号： H03B5/1212 , H03B1/04 , H03B5/1243 , H03B5/1256 , H03B27/00 , H03B2200/0074
摘要： A circuit and method for generating a signal is disclosed. The circuit includes a set of wide tuning LC tanks, a set of core transistors cross coupled to the set of wide tuning LC tanks, and a combining network coupled to the set of wide tuning LC tanks and the set of core transistors. The combining network further includes a set of inputs connected to the set of wide tuning LC tanks and the set of core transistors, a set of coupling transistors connected to the set of inputs, a set of source inductors connected to the set of coupling transistors, a coupling capacitor connected to the set of source inductors, a load resistor connected to the coupling capacitor. The combining network combines the set of inputs and the signal is delivered to the load resistor as a fourth order harmonic.
摘要翻译： 公开了一种用于产生信号的电路和方法。 该电路包括一组宽调谐LC箱，一组交叉耦合到一组宽调谐LC箱的核心晶体管，以及耦合到该组宽调谐LC箱和一组核心晶体管的组合网络。 组合网络还包括连接到一组宽调谐LC箱和一组核心晶体管的一组输入，连接到该组输入的一组耦合晶体管，连接到该组耦合晶体管的一组源极电感器， 连接到源电感器组的耦合电容器，连接到耦合电容器的负载电阻器。 组合网络组合了这组输入，信号作为四阶谐波传送到负载电阻。
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公开(公告)号：US09160309B2
公开(公告)日：2015-10-13
申请号：US14103645
申请日：2013-12-11
CPC分类号： H03H11/1213 , G05F1/445 , H02M11/00 , H03H11/045 , H03H2011/0483
摘要： An area efficient baseband filter is disclosed. In an exemplary embodiment, an apparatus includes a current to voltage (I-V) filter configured to receive an input current signal at an input port and generate a filtered output voltage signal at an output port based on a feedback transconductance. The input current signal comprises an input DC current in addition to a signal current. The apparatus also includes a feedback circuit connected between the output port and the input port, the feedback circuit having at least one transistor configured to couple the input DC current to a signal ground and to provide the feedback transconductance for the I-V filter.
摘要翻译： 公开了一种区域有效的基带滤波器。 在一个示例性实施例中，一种装置包括电流 - 电压（I-V）滤波器，其被配置为在输入端口处接收输入电流信号，并且基于反馈跨导在输出端口处生成经滤波的输出电压信号。 除了信号电流之外，输入电流信号包括输入DC电流。 该装置还包括连接在输出端口和输入端口之间的反馈电路，反馈电路具有至少一个晶体管，其被配置为将输入的DC电流耦合到信号地，并为I-V滤波器提供反馈跨导。
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公开(公告)号：US08970315B2
公开(公告)日：2015-03-03
申请号：US13598429
申请日：2012-08-29
申请人： Hyman Shanan
发明人： Hyman Shanan
CPC分类号： H03B1/04 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B5/1265 , H03B2200/005 , H03B2200/0062 , H03B2200/009 , H03B2201/0258 , H03B2201/0266 , H03B2202/03
摘要： Apparatus and methods are disclosed related to an oscillator that includes a sustaining amplifier. One such apparatus includes a resonant circuit configured to operate at a resonant frequency, a sustaining amplifier, and a passive impedance network. The resonant circuit can have a first terminal and a second terminal. The sustaining amplifier can include at least a first switch configured to drive the first terminal of the resonant circuit in response to an input at a first control terminal of the first switch. The passive impedance network can be configured to pass a bias to the first control terminal, such as a gate of a field effect transistor, of the first switch. The passive impedance network can be electrically coupled to the second terminal of the resonant circuit and can include at least one inductor.
摘要翻译： 公开了涉及包括维持放大器的振荡器的装置和方法。 一种这样的设备包括被配置为以谐振频率操作的谐振电路，维持放大器和被动阻抗网络。 谐振电路可以具有第一端子和第二端子。 支持放大器可以包括至少第一开关，其被配置为响应于第一开关的第一控制端处的输入来驱动谐振电路的第一端子。 无源阻抗网络可以被配置为将偏置传递到第一开关的第一控制端子，例如场效应晶体管的栅极。 无源阻抗网络可以电耦合到谐振电路的第二端子并且可以包括至少一个电感器。
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14.发明申请CLOCK GENERATING CIRCUIT HAVING PARASITIC OSCILLATION SUPPRESSING UNIT AND METHOD OF SUPPRESSING PARASITIC OSCILLATION USING THE SAME 审中-公开具有PARASITIC振荡抑制单元的时钟发生电路及使用该抑制单元抑制PARASITIC振荡的方法公开(公告)号：US20140300423A1
公开(公告)日：2014-10-09
申请号：US14048950
申请日：2013-10-08
发明人： Yo Sub MOON
IPC分类号： H03B1/04
CPC分类号： H03B1/04 , H03B5/36 , H03B2202/012 , H03B2202/05
摘要： Disclosed herein are a clock generating circuit having a parasitic oscillation suppressing unit and a method of suppressing parasitic oscillation using the same. An output VDD of a parasitic component eliminating circuit is maintained in a high or low state according to the condition in which the output VDD falls from the high state to the low state and the condition in which the output VDD rises from the low state to the high state based on a threshold voltage VSPH when an input signal of the parasitic component eliminating circuit is changed from 0 to 1 and a threshold voltage VSPL when the input signal of the parasitic component eliminating circuit is changed from 1 to 0. Undesired parasitic oscillation is eliminated (suppressed) by the parasitic component eliminating circuit provided between a oscillator and a buffer.
摘要翻译： 这里公开了具有寄生振荡抑制单元的时钟发生电路和使用该寄生振荡抑制单元抑制寄生振荡的方法。 寄生元件消除电路的输出VDD根据输出VDD从高电平状态下降到低电平的状态和输出VDD从低电平状态上升到 当寄生元件消除电路的输入信号从0变为1时，基于阈值电压VSPH的高状态以及当寄生成分消除电路的输入信号从1变为0时的阈值电压VSPL。不期望的寄生振荡是 由设置在振荡器和缓冲器之间的寄生元件消除电路消除（抑制）。
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公开(公告)号：US08787849B2
公开(公告)日：2014-07-22
申请号：US13930119
申请日：2013-06-28
申请人： Broadcom Corporation
IPC分类号： H03B1/04
摘要： Methods and systems for receiving signals via a multi-port distributed antenna are disclosed and may include selectively enabling one or more low noise amplifiers (LNAs) coupled to the antenna. The selective enabling may be based on a desired gain level applied to a signal received from the antenna. The LNAs may be coupled to ports on the antenna based on an input impedance of the LNAs and an impedance of the ports. Each of the LNAs may be configured for optimum linearity in different gain ranges, which may be proportional to the input impedance of the LNAs. The antenna may be integrated on a chip with the LNAs, or may be located external to the chip. The antenna may include a microstrip antenna. The LNAs may include variable gain and may be enabled utilizing a processor. Linearity on demand may be enabled via the selective enabling of the LNAs.
摘要翻译： 公开了通过多端口分布式天线接收信号的方法和系统，并且可以包括选择性地启用耦合到天线的一个或多个低噪声放大器（LNA）。 选择性启动可以基于应用于从天线接收的信号的期望的增益电平。 LNA可以基于LNA的输入阻抗和端口的阻抗耦合到天线上的端口。 每个LNA可以被配置为在不同的增益范围内实现最佳线性度，其可以与LNA的输入阻抗成比例。 天线可以集成在具有LNA的芯片上，或者可以位于芯片的外部。 天线可以包括微带天线。 LNA可以包括可变增益，并且可以利用处理器启用。 可以通过LNA的选择性启用来实现需求线性。
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公开(公告)号：US20140197900A1
公开(公告)日：2014-07-17
申请号：US13831312
申请日：2013-03-14
申请人： BROADCOM CORPORATION
CPC分类号： H03L7/16 , H03B5/1215 , H03B5/1228 , H03B5/1265 , H03F1/00 , H03H7/0153 , H03J2200/10 , H03L2207/50
摘要： Systems and methods for switching impedance are provided. In some aspects, a system includes first and second impedance elements and an impedance switch module, which includes a third impedance element coupled between the first and second impedance elements and a switch parallel to the third impedance element. The switch is coupled between the first and second impedance elements, and is configured to switch between an open configuration and a closed configuration. An electrical path is completed between the first impedance element and the second impedance element via the first switch in the closed configuration. The electrical path is not completed in the open configuration. A total impedance of the first impedance element, the second impedance element, and the impedance switch module is varied based on the switching between the open configuration and the closed configuration.
摘要翻译： 提供了开关阻抗的系统和方法。 在一些方面，系统包括第一和第二阻抗元件和阻抗开关模块，阻抗开关模块包括耦合在第一和第二阻抗元件之间的第三阻抗元件和平行于第三阻抗元件的开关。 开关耦合在第一和第二阻抗元件之间，并且被配置为在打开配置和关闭配置之间切换。 在第一阻抗元件和第二阻抗元件之间经由闭合配置中的第一开关完成电路径。 电气路径在打开配置中未完成。 第一阻抗元件，第二阻抗元件和阻抗开关模块的总阻抗基于打开配置和闭合配置之间的切换而变化。
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公开(公告)号：US08478214B2
公开(公告)日：2013-07-02
申请号：US13543171
申请日：2012-07-06
IPC分类号： H03B1/04
摘要： Methods and systems for receiving signals via a multi-port distributed antenna are disclosed and may include selectively enabling one or more low noise amplifiers (LNAs) coupled to the antenna. The selective enabling may be based on a desired gain level applied to a signal received from the antenna. The LNAs may be coupled to ports on the antenna based on an input impedance of the LNAs and an impedance of the ports. Each of the LNAs may be configured for optimum linearity in different gain ranges, which may be proportional to the input impedance of the LNAs. The antenna may be integrated on a chip with the LNAs, or may be located external to the chip. The antenna may include a microstrip antenna. The LNAs may include variable gain and may be enabled utilizing a processor. Linearity on demand may be enabled via the selective enabling of the LNAs.
摘要翻译： 公开了通过多端口分布式天线接收信号的方法和系统，并且可以包括选择性地启用耦合到天线的一个或多个低噪声放大器（LNA）。 选择性启动可以基于应用于从天线接收的信号的期望的增益电平。 LNA可以基于LNA的输入阻抗和端口的阻抗耦合到天线上的端口。 每个LNA可以被配置为在不同的增益范围内实现最佳线性度，其可以与LNA的输入阻抗成比例。 天线可以集成在具有LNA的芯片上，或者可以位于芯片的外部。 天线可以包括微带天线。 LNA可以包括可变增益，并且可以利用处理器启用。 可以通过LNA的选择性启用来实现需求线性。
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公开(公告)号：US20120313671A1
公开(公告)日：2012-12-13
申请号：US13574069
申请日：2011-01-14
申请人： Hiroyasu Sano , Koji Tomitsuka
发明人： Hiroyasu Sano , Koji Tomitsuka
IPC分类号： H03B1/04
CPC分类号： H03H17/0275 , H03H17/0642
摘要： A signal generation device includes: filter banks that perform sampling frequency conversion with respect to an input signal of a predetermined sampling frequency, and generate a signal obtained after the sampling frequency conversion as an output signal; a control-signal generation unit that selects the filter banks to be used based on a sampling-frequency setting value indicating a sampling frequency of the output signal: and a switching unit selects the filter banks based on a result of selection by the control-signal generation unit.
摘要翻译： 信号产生装置包括：相对于预定采样频率的输入信号执行采样频率转换的滤波器组，并且生成在采样频率转换之后获得的信号作为输出信号; 控制信号生成单元，其基于表示输出信号的采样频率的采样频率设定值来选择要使用的滤波器组，并且切换单元根据控制信号的选择结果来选择滤波器组 发电机组。
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19.发明申请公开(公告)号：US20090261868A1
公开(公告)日：2009-10-22
申请号：US12165151
申请日：2008-06-30
申请人： Shey-Shi Lu , Hsien-Ku Chen
发明人： Shey-Shi Lu , Hsien-Ku Chen
CPC分类号： H03B19/14
摘要： The invention includes a harmonic suppression circuit, an injection-locked frequency divider circuit (ILFD) and associated methods. The harmonic suppression circuit comprises a source voltage, two suppression modules, two input terminals, two smoothed output terminals and a ground. The ILFD comprises a ground, an input transistor, an input terminal, two divider legs, two output terminals and a source voltage. The associated method to improve harmonic suppression comprises acts of synthesizing differential-phase signals and simultaneously suppressing second harmonics of in-phase signals. The method to extent an ILFD's locking range comprises acts of decreasing quality factor while keeping resonance frequency constant.
摘要翻译： 本发明包括谐波抑制电路，注入锁定分频器电路（ILFD）和相关方法。 谐波抑制电路包括源极电压，两个抑制模块，两个输入端子，两个平滑的输出端子和接地。 ILFD包括接地，输入晶体管，输入端子，两个分频器脚，两个输出端子和源极电压。 改善谐波抑制的相关方法包括合成差分相位信号并同时抑制同相信号的二次谐波的动作。 扩展ILFD锁定范围的方法包括降低质量因子的作用，同时保持共振频率不变。
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公开(公告)号：US20080297244A1
公开(公告)日：2008-12-04
申请号：US12128193
申请日：2008-05-28
申请人： Soeren Poulsen , Lars Risbo
发明人： Soeren Poulsen , Lars Risbo
摘要： One embodiment of an apparatus for filtering an electrical signal includes a loop filter with an input and an output that applies a transfer function to a signal at the input. The transfer function has substantially no real part. The loop filter has a dominant pole placed substantially at or above an upper frequency in the frequency range of interest for the loop filter.
摘要翻译： 用于滤波电信号的装置的一个实施例包括环路滤波器，其具有对输入端的信号施加传递函数的输入端和输出端。 传递函数基本上没有实质。 环路滤波器在环路滤波器感兴趣的频率范围内具有基本上位于或高于上限频率的主极。
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