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    • 1. 发明授权
    • Self gain aligning circuit and method
    • 自增益对位电路及方法
    • US6091942A
    • 2000-07-18
    • US755861
    • 1996-12-02
    • Kenneth Vern BuerDavid Warren CormanBill Tabano Agar, Jr.
    • Kenneth Vern BuerDavid Warren CormanBill Tabano Agar, Jr.
    • H03G3/30H01Q11/12H04B1/06
    • H03G3/3036
    • An K-band amplifier circuit (10) with two samplers (12, 18) coupled to detectors (22, 26) that detect an input and an output RF signal level. These two reference signals are provided to a differential gain control circuit (24) which is coupled to one or more variable gain amplifier (VGA) (14) stages. The VGAs compensate for the gain of an entire chain of amplifiers (16). When the individual amplifier gains vary for any reason, (i.e., process, temperature effects or end of life degradation) the variation in gain causes higher or lower levels of detected output reference signals for a given RF input signal. The gain control circuit (24) drives the VGA (14) up or down as appropriate. By maintaining a constant offset in input and output reference control signals, the gain control circuit (24) drives the amplifier chain (16) to a constant gain.
    • 具有耦合到检测器(22,26)的两个采样器(12,18)的K波段放大器电路(10),其检测输入和输出RF信号电平。 这两个参考信号被提供给耦合到一个或多个可变增益放大器(VGA)(14)级的差分增益控制电路(24)。 VGA补偿整个放大器链(16)的增益。 当单个放大器增益由于任何原因(即,处理,温度效应或寿命终止退化)而变化时,增益的变化导致给定RF输入信号的检测到的输出参考信号的较高或较低水平。 增益控制电路(24)适当地驱动VGA(14)上或下。 通过保持输入和输出参考控制信号中的恒定偏移,增益控制电路(24)将放大器链(16)驱动到恒定增益。
    • 2. 发明授权
    • Linear power amplifier with distortion detection
    • 线性功率放大器,具有失真检测
    • US5712593A
    • 1998-01-27
    • US596533
    • 1996-02-05
    • Kenneth Vern BuerDavid Warren CormanBill Tabano Agar, Jr.
    • Kenneth Vern BuerDavid Warren CormanBill Tabano Agar, Jr.
    • H03G3/30H03G3/20
    • H03G3/3042
    • A power amplifier (10) suitable for satellite cellular communication systems provides highly efficient linear amplification of noise-like RF signals that have multiple carriers spread over a large instantaneous bandwidth. The amount of distortion present in the output is detected (14, 16, 18) and a feedback signal is provided to control the bias point of the active devices. As drive levels increase, the increased harmonic distortion power detected causes the power amplifier bias to increase thus reducing distortion. The control circuit (20) continually re-biases the power amplifier (12) for maximum efficiency for a predetermined level of distortion. The control circuit (20) may be adjusted to maximize efficiency while maintaining an allowable distortion level over the entire dynamic range of the devices.
    • 适用于卫星蜂窝通信系统的功率放大器(10)提供了具有多个载波在大的瞬时带宽上扩展的类噪声RF信号的高效线性放大。 检测输出中出现的失真量(14,16,18),并提供反馈信号来控制有源器件的偏置点。 当驱动电平增加时,检测到的增加的谐波失真功率导致功率放大器偏置增加,从而减少失真。 控制电路(20)为了达到预定的失真水平而最大限度地重新偏置功率放大器(12)。 可以调整控制电路(20)以最大化效率,同时在整个设备的整个动态范围内保持允许的失真水平。
    • 3. 发明授权
    • Harmonic generator
    • 谐波发生器
    • US5990712A
    • 1999-11-23
    • US943439
    • 1997-10-03
    • David Warren CormanKenneth Vern BuerBill Tabano Agar, Jr.
    • David Warren CormanKenneth Vern BuerBill Tabano Agar, Jr.
    • H03B19/00
    • H03B19/00
    • A harmonic generator (20) converts an input signal (24) at a fundamental frequency (28) into an output signal (32) at a harmonic frequency (34). A non-linear device (22) converts the input signal (24) into an intermediate signal (38) in which the harmonic frequency (34) has a maximized amplitude (40) determined by a conduction angle (26). A harmonic filter (68) produces a filtered signal (70) proportional to the amplitude (40) of the harmonic frequency (34) within the intermediate signal (38). A detector (80) produces a control signal (82) proportional to the amplitude of the filtered signal (70). A control circuit (84) produces a variable bias signal (50) for non-linear device (22), bias signal (50) being proportional to the amplitude of the control signal (82) and determining the conduction angle (26). An output filter (88) converts the intermediate signal (38) into an output signal (32) at the harmonic frequency (34).
    • 谐波发生器(20)将基频(28)的输入信号(24)转换成谐波频率(34)的输出信号(32)。 非线性装置(22)将输入信号(24)转换成其中谐波频率(34)具有由导通角(26)确定的最大振幅(40)的中间信号(38)。 谐波滤波器(68)产生与中间信号(38)内的谐波频率(34)的振幅(40)成比例的滤波信号(70)。 检测器(80)产生与滤波信号(70)的幅度成比例的控制信号(82)。 控制电路(84)产生用于非线性装置(22)的可变偏置信号(50),偏置信号(50)与控制信号(82)的振幅成比例并确定导通角(26)。 输出滤波器(88)将中间信号(38)转换成谐波频率(34)的输出信号(32)。
    • 6. 发明授权
    • Voltage-tuned millimeter-wave amplifier and method for tuning
    • 电压调谐毫米波放大器和调谐方法
    • US5831476A
    • 1998-11-03
    • US753817
    • 1996-12-02
    • Kenneth Vern BuerJohn HolmesDavid Warren Corman
    • Kenneth Vern BuerJohn HolmesDavid Warren Corman
    • H03F3/193
    • H03F3/193
    • A method (140) for tuning millimeter-wave FET amplifiers (20) during manufacture, through the application (144) of a gate bias voltage (52) so as to tune the FET (22) of the amplifier (20) to match an input circuit (24), and through the application (146) of a drain bias voltage (74) so as to tune the FET (22) of the amplifier (20) to match an output circuit (26), then measuring (150) the frequency response of the amplifier (20). This tuning method (140) is repeated (152) until a predetermined frequency response has been achieved. Once achieved, the predetermined frequency response is realized (154) by permanently fixing the gate bias voltage (52) and the drain bias voltage (74) at the determined values. This iterative method (140) of tuning amplifiers (20) is then repeated for all amplifiers (20) to be tuned.
    • 一种用于在制造期间通过栅极偏置电压(52)的应用(144)来调谐毫米波FET放大器(20)的方法(140),以便调谐放大器(20)的FET(22)以匹配 输入电路(24),并通过漏极偏置电压(74)的应用(146),以调谐放大器(20)的FET(22)以匹配输出电路(26),然后测量(150) 放大器(20)的频率响应。 重复该调谐方法(140)(152),直到达到预定的频率响应。 一旦实现,通过将栅极偏置电压(52)和漏极偏置电压(74)永久固定在所确定的值来实现预定的频率响应(154)。 然后对所有放大器(20)进行调谐的这种迭代方法(140)的调谐放大器(20)被重复。
    • 8. 发明授权
    • High density connector and method therefor
    • 高密度连接器及其方法
    • US6005458A
    • 1999-12-21
    • US86605
    • 1998-05-29
    • Kenneth Vern BuerDavid Warren CormanJoel L. Gross
    • Kenneth Vern BuerDavid Warren CormanJoel L. Gross
    • H01P1/04
    • H01P1/042
    • A method and apparatus for efficiently interconnecting a large number of high frequency high bandwidth signals includes two interface plates (100, 200), each having two substantially coplanar faces, a mating face (110, 210) and a non-mating face (120, 220). Each interface plate has waveguides (116, 216) disposed between the coplanar faces such that when the mating faces of the interface plates are brought together, a plurality of waveguide connections are made. An energy absorbing gasket (300) having a hole pattern matching the waveguide pattern is disposed between the mating faces of the interface plates so that reflections caused by misalignment and non-coplanarity of faces can be reduced.
    • 用于有效地互连大量高频高带宽信号的方法和装置包括两个接口板(100,200),每个具有两个基本上共面的面,配合面(110,210)和非配合面(120,210) 220)。 每个界面板具有布置在共面之间的波导(116,216),使得当界面板的配合面汇合在一起时,形成多个波导连接。 具有与波导图案匹配的孔图案的能量吸收垫圈(300)设置在界面板的配合面之间,从而可以减少由面的不对准和非共面性引起的反射。
    • 9. 发明授权
    • High dynamic range millimeter wave power detector with temperature
compensation
    • 高动态范围毫米波功率检测器,具有温度补偿功能
    • US5873029A
    • 1999-02-16
    • US802085
    • 1997-02-19
    • Christopher David GrondahlDavid Warren CormanKenneth Vern Buer
    • Christopher David GrondahlDavid Warren CormanKenneth Vern Buer
    • G01R21/12H04B1/036H04B1/04
    • G01R21/12H04B1/036
    • An RF power detector (10) includes an RF detector circuit (12), a nonlinear feedback amplifier (14), a temperature compensation circuit (16) and a linear feedback amplifier circuit (18). The RF detector circuit converts an RF signal to a voltage representative of the RF signals power level. Nonlinear feedback amplifier (14) nonlinearly amplifies the voltage and compensates for the nonlinearities of the RF detector circuits detector elements. Temperature compensation element provides a temperature compensation signal to compensate for the temperature effects of the detector elements of RF detector circuit (12). The output signal of RF power detector (10) is a substantially linearly representation of the RF input signals power level. Nonlinear feedback amplifier (14) includes a nonlinear feedback circuit (30) with a nonlinear feedback element (32) in the feedback path of op-amp (42). Power detection at microwave and millimeter wave frequencies is accomplished with the high dynamic range, high sensitivity, low minimum detection level and temperature sensitivity. The RF power detector is very producable and requires virtually no manual circuit tailoring or tuning.
    • RF功率检测器(10)包括RF检测器电路(12),非线性反馈放大器(14),温度补偿电路(16)和线性反馈放大器电路(18)。 RF检测器电路将RF信号转换成表示RF信号功率电平的电压。 非线性反馈放大器(14)非线性放大电压并补偿RF检测器电路检测器元件的非线性。 温度补偿元件提供温度补偿信号以补偿RF检测器电路(12)的检测器元件的温度影响。 RF功率检测器(10)的输出信号是RF输入信号功率电平的基本线性表示。 非线性反馈放大器(14)包括在运算放大器(42)的反馈路径中具有非线性反馈元件(32)的非线性反馈电路(30)。 微波和毫米波频率下的功率检测是通过高动态范围,高灵敏度,低最小检测水平和温度灵敏度实现的。 RF功率检测器是非常可生产的,并且实际上不需要手动电路调整或调谐。
    • 10. 发明授权
    • High power broadband termination for k-band amplifier combiners
    • k波段放大器组合器的大功率宽带终端
    • US5831491A
    • 1998-11-03
    • US702782
    • 1996-08-23
    • Kenneth Vern BuerJohn HolmesDavid Warren Corman
    • Kenneth Vern BuerJohn HolmesDavid Warren Corman
    • H01P1/22H01P1/26H01P5/02H03F3/60H01P5/12
    • H01P1/268
    • An extremely broad band high power termination (10) for microwave and millimeter frequency amplifiers combines a standard resistive low frequency termination (15) with a broad band high frequency absorptive element (13) using an absorptive material such as Eccosorb. A mid-band matching network (14) is provided between the resistive termination (15) and the Eccosorb absorptive element (13). The Eccosorb absorbs the energy of the higher microwave frequencies while the resistor absorbs energy at low frequencies. Accordingly, a much higher power handling capability in a compact planer environment is achieved. This termination (10) is suitable use for use in K-band power amplifier combiners (30) that require high isolation and high power handling capability of the isolated ports (35).
    • 用于微波和毫米频率放大器的极宽带大功率终端(10)使用吸收材料如Eccosorb将标准电阻性低频终端(15)与宽带高频吸收元件(13)组合。 中间带匹配网络(14)设置在电阻终端(15)和吸收体吸收元件(13)之间。 Eccosorb吸收较高微波频率的能量,同时电阻在低频下吸收能量。 因此,在紧凑的刨床环境中实现了更高的功率处理能力。 该终端(10)适用于需要隔离端口(35)的高隔离度和高功率处理能力的K波段功率放大器组合器(30)。