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1.发明授权Linear voltage controlled variable attenuator with linear DB/V gain slope 有权具有线性DB / V增益斜率的线性电压控制可变衰减器公开(公告)号：US08131241B2
公开(公告)日：2012-03-06
申请号：US12366336
申请日：2009-02-05
CPC分类号： H03G1/007 , H03G3/3063
摘要： A variable attenuator and method of attenuating a signal is presented. The variable attenuator contains an input that receives an input signal to be attenuated. A voltage divider between a resistor and parallel MOSFETs provides the attenuated input signal. The MOSFETs have different sizes and have gates that are connected to a control signal through different resistances such that the larger the MOSFET, the larger the resistance. The control signal is dependent on the output of the attenuator. The arrangement extends the linearity of the attenuation over a wide voltage range of the control signal and decreases the intermodulation distortion of the attenuator.
摘要翻译： 提出了一种衰减信号的可变衰减器和方法。 可变衰减器包含接收要衰减的输入信号的输入端。 电阻和并联MOSFET之间的分压器提供衰减的输入信号。 MOSFET具有不同的尺寸，并且具有通过不同电阻连接到控制信号的栅极，使得MOSFET越大，电阻越大。 控制信号取决于衰减器的输出。 该布置在控制信号的宽电压范围内延伸衰减的线性，并减小衰减器的互调失真。
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2.发明申请LINEAR VOLTAGE CONTROLLED VARIABLE ATTENUATOR WITH LINEAR DB/V GAIN SLOPE 有权线性电压控制变量衰减器与线性DB / V增益斜率公开(公告)号：US20090143036A1
公开(公告)日：2009-06-04
申请号：US12366336
申请日：2009-02-05
IPC分类号： H04N7/00
CPC分类号： H03G1/007 , H03G3/3063
摘要： A variable attenuator and method of attenuating a signal is presented. The variable attenuator contains an input that receives an input signal to be attenuated. A voltage divider between a resistor and parallel MOSFETs provides the attenuated input signal. The MOSFETs have different sizes and have gates that are connected to a control signal through different resistances such that the larger the MOSFET, the larger the resistance. The control signal is dependent on the output of the attenuator. The arrangement extends the linearity of the attenuation over a wide voltage range of the control signal and decreases the intermodulation distortion of the attenuator.
摘要翻译： 提出了一种衰减信号的可变衰减器和方法。 可变衰减器包含接收要衰减的输入信号的输入端。 电阻和并联MOSFET之间的分压器提供衰减的输入信号。 MOSFET具有不同的尺寸，并且具有通过不同电阻连接到控制信号的栅极，使得MOSFET越大，电阻越大。 控制信号取决于衰减器的输出。 该布置在控制信号的宽电压范围内延伸衰减的线性，并减小衰减器的互调失真。
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3.发明授权High linearity and low noise amplifier with continuously variable gain control 有权高线性度和低噪声放大器，连续可变增益控制公开(公告)号：US07403071B2
公开(公告)日：2008-07-22
申请号：US11374870
申请日：2006-03-14
IPC分类号： H03F3/45
CPC分类号： H03F1/26 , H03F1/32 , H03F3/191 , H03F3/45179 , H03F2200/211 , H03F2200/294 , H03F2200/372 , H03F2203/45306 , H03F2203/45616 , H03F2203/45726 , H03G1/0088 , H03G3/3052
摘要： An amplifier, tuner, and method of amplification are provided. The amplifier has a pair of transistors. Each transistor has a control terminal and an output terminal disposed between the transistor and a power supply input. A first network is connected between each power supply input and output terminal. The first network contains a first resistor and a first switch connected in parallel with the first resistor. A second network is connected between the transistors. The second network contains a first and second combination. Each of the first and second combinations contains a second resistor and a second switch connected in parallel with the second resistor. The first and second combinations are connected by a third switch.
摘要翻译： 提供放大器，调谐器和放大方法。 放大器有一对晶体管。 每个晶体管具有控制端子和设置在晶体管和电源输入端之间的输出端子。 第一个网络连接在每个电源输入和输出端子之间。 第一网络包含与第一电阻并联连接的第一电阻器和第一开关。 第二网络连接在晶体管之间。 第二网络包含第一和第二组合。 第一和第二组合中的每一个包括与第二电阻器并联连接的第二电阻器和第二开关。 第一和第二组合通过第三开关连接。
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4.发明授权Linear voltage controlled variable attenuator with linear DB/V gain slope 有权具有线性DB / V增益斜率的线性电压控制可变衰减器公开(公告)号：US07505748B2
公开(公告)日：2009-03-17
申请号：US11238657
申请日：2005-09-28
IPC分类号： H04B7/00
CPC分类号： H03G1/007 , H03G3/3063
摘要： A variable attenuator and method of attenuating a signal is presented. The variable attenuator contains an input that receives an input signal to be attenuated. A voltage divider between a resistor and parallel MOSFETs provides the attenuated input signal. The MOSFETs have different sizes and have gates that are connected to a control signal through different resistances such that the larger the MOSFET, the larger the resistance. The control signal is dependent on the output of the attenuator. The arrangement extends the linearity of the attenuation over a wide voltage range of the control signal and decreases the intermodulation distortion of the attenuator.
摘要翻译： 提出了一种衰减信号的可变衰减器和方法。 可变衰减器包含接收要衰减的输入信号的输入端。 电阻和并联MOSFET之间的分压器提供衰减的输入信号。 MOSFET具有不同的尺寸，并且具有通过不同电阻连接到控制信号的栅极，使得MOSFET越大，电阻越大。 控制信号取决于衰减器的输出。 该布置在控制信号的宽电压范围内延伸衰减的线性，并减小衰减器的互调失真。
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公开(公告)号：US08588726B2
公开(公告)日：2013-11-19
申请号：US13360926
申请日：2012-01-30
CPC分类号： H03D7/1466 , H03D7/1441 , H03D7/1458 , H03D7/1491 , H03D7/165 , H03D2200/0084 , H03D2200/0088
摘要： An apparatus comprising a low noise mixer comprising a transconductance amplifier configured to receive a differential voltage and to generate a differential current signal, a passive mixer directly connected to an output of the transconductance amplifier, and a transimpedance amplifier coupled to the passive mixer, wherein the transimpedance amplifier is configured to receive a current signal and convert the current signal to a voltage signal.
摘要翻译： 一种包括低噪声混合器的装置，包括被配置为接收差分电压并产生差分电流信号的跨导放大器，直接连接到跨导放大器的输出的无源混频器以及耦合到无源混频器的跨阻抗放大器，其中， 跨阻放大器被配置为接收电流信号并将电流信号转换为电压信号。
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6.发明授权公开(公告)号：US07583945B2
公开(公告)日：2009-09-01
申请号：US11329752
申请日：2006-01-10
IPC分类号： H04B1/06
CPC分类号： H03F1/26 , H03F3/345 , H03F3/45475 , H03F2200/211 , H03F2200/294 , H03F2200/372 , H03F2203/45512 , H03F2203/45551 , H03G3/3036 , H04W52/52
摘要： An amplifier and method of amplifying a signal is presented. The amplifier contains a fixed gain stage, a digitally controllable gain stage, and a continuously variable attenuator connected between the fixed and controllable gain stages. The attenuator and controllable gain stage are controllable such that the gain of the controllable gain stage is decreased when the attenuation of the attenuator reaches a predetermined maximum value and the attenuation of the attenuator is reduced thereafter. The output power level of the amplifier remains constant.
摘要翻译： 提出了放大器和放大信号的方法。 放大器包含固定增益级，数字可控增益级和连接在固定增益级与可控增益级之间的连续可变衰减器。 衰减器和可控增益级是可控的，使得当衰减器的衰减达到预定的最大值时，可控增益级的增益减小，此后衰减器的衰减减小。 放大器的输出功率电平保持不变。
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公开(公告)号：US20120200334A1
公开(公告)日：2012-08-09
申请号：US13360926
申请日：2012-01-30
IPC分类号： G06G7/16
CPC分类号： H03D7/1466 , H03D7/1441 , H03D7/1458 , H03D7/1491 , H03D7/165 , H03D2200/0084 , H03D2200/0088
摘要： An apparatus comprising a low noise mixer comprising a transconductance amplifier configured to receive a differential voltage and to generate a differential current signal, a passive mixer directly connected to an output of the transconductance amplifier, and a transimpedance amplifier coupled to the passive mixer, wherein the transimpedance amplifier is configured to receive a current signal and convert the current signal to a voltage signal.
摘要翻译： 一种包括低噪声混合器的装置，包括被配置为接收差分电压并产生差分电流信号的跨导放大器，直接连接到跨导放大器的输出的无源混频器以及耦合到无源混频器的跨阻抗放大器，其中， 跨阻放大器被配置为接收电流信号并将电流信号转换为电压信号。
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公开(公告)号：US07332979B2
公开(公告)日：2008-02-19
申请号：US11261978
申请日：2005-10-28
IPC分类号： H03B5/36
摘要： A frequency source having a fast start-up time and low noise in steady state is presented. The frequency source includes an oscillator and a hybrid automatic gain control (AGC) loop that switches between an analog AGC loop at oscillator start up and a digital AGC loop at steady state operation. The analog AGC loop includes a peak detector connected to the oscillator and an error integrator integrating the difference between the peak detector output and a reference voltage. The digital AGC loop includes a comparator comparing the peak detector output and high/low reference voltages, an oscillator counter providing a timer signal, a digital-to-analog converter (DAC) supplied with a digital word, and a low pass filter between the DAC and the oscillator. The timer signal causes a multiplexer to select either the analog AGC loop or the digital AGC loop.
摘要翻译： 提出了一种在稳态下具有快速起动时间和低噪声的频率源。 频率源包括振荡器和混合自动增益控制（AGC）环路，其在振荡器启动时在模拟AGC环路和稳态操作之间的数字AGC环路之间切换。 模拟AGC环路包括连接到振荡器的峰值检测器和积分峰值检测器输出和参考电压之间的差的误差积分器。 数字AGC环路包括比较峰值检测器输出和高/低参考电压的比较器，提供定时器信号的振荡器计数器，提供有数字字的数模转换器（DAC）和在数字字之间的低通滤波器 DAC和振荡器。 定时器信号使多路复用器选择模拟AGC环路或数字AGC环路。
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公开(公告)号：US4559688A
公开(公告)日：1985-12-24
申请号：US544558
申请日：1983-10-24
IPC分类号： F16J15/10 , B29C45/16 , B29C65/56 , C08F255/06 , C08J5/12 , C08K5/3415 , C09D123/16 , F28F9/02 , B23P15/26
CPC分类号： F28F9/0226 , B29C45/1676 , C08F255/06 , C08J5/12 , C08K5/3415 , C09D123/16 , B29C45/1657 , B29K2023/16 , B29K2077/00 , B29L2031/265 , B29L2031/3055 , F28F2275/025 , Y10T29/49389
摘要： Dicumyl peroxide-dimaleimide cured EPDM elastomers can be molded to molded nylon articles so that the EPDM strongly adheres to the nylon. This practice is particularly useful in molding EPDM gaskets to nylon heat exchanger tanks.
摘要翻译： 二异丙苯氧基 - 二马来酰亚胺固化的EPDM弹性体可以模制成模制尼龙制品，使得EPDM强烈地粘附到尼龙。 这种做法在将EPDM垫片成型到尼龙热交换器罐中是特别有用的。
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公开(公告)号：US08920205B2
公开(公告)日：2014-12-30
申请号：US13970946
申请日：2013-08-20
申请人： Daniel P. McCarthy
发明人： Daniel P. McCarthy
CPC分类号： B63C9/081 , B63C9/00 , B63C9/19 , B63C2009/131
摘要： A personal floatation device includes an attachment device that selectably couples to a user's body. The personal floatation device includes a housing that couples to the attachment device. The housing includes a base and an outer wall extending outwardly from a perimeter of the base. The housing includes an inner wall enclosed by the outer wall and extending outwardly from an interior region of the base. The housing includes a compressed air container extending through the inner wall. The housing includes a compressed air activation device functionally coupled to the compressed air container such that, when triggered, releases air therefrom. The housing includes an air bladder in fluid communication with the compressed air container. The housing includes a breakaway cover coupled to the outer wall that detaches when exposed to pressure from the air bladder inflating. The housing include a trigger device functionally coupled to the compressed air activation device.
摘要翻译： 个人漂浮装置包括可选地耦合到使用者身体的附件装置。 个人漂浮装置包括耦合到附接装置的壳体。 壳体包括从基部的周边向外延伸的基部和外壁。 壳体包括由外壁包围并从基部的内部区域向外延伸的内壁。 壳体包括延伸穿过内壁的压缩空气容器。 壳体包括功能地联接到压缩空气容器的压缩空气致动装置，使得当被触发时，其从其中释放空气。 壳体包括与压缩空气容器流体连通的气囊。 壳体包括联接到外壁的分离盖，当暴露于来自气囊膨胀的压力时，该外壳分离。 壳体包括功能性地联接到压缩空气启动装置的触发装置。
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