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公开(公告)号：US06771139B2
公开(公告)日：2004-08-03
申请号：US10300844
申请日：2002-11-21
申请人： Daniel Schultheiss , Winfried Rauer
发明人： Daniel Schultheiss , Winfried Rauer
IPC分类号： H03B518
摘要： The microwave pulse generator of the invention for generating microwave pulses with a pulse duration in the nanosecond range has a pulse generator that generates pulses of constant width, and a microwave resonant circuit for generating microwave oscillations. Additionally provided is a pulse-shortening stage, to which the pulses from the pulse generator are fed and which generates output pulses in the nanosecond range. The output pulses are fed as supply voltage pulses to a microwave oscillator, at the output of which the microwave pulses can be picked off. A voltage-controlled varicap diode arrangement is provided to influence the pulse lengths and/or pulse amplitudes.
摘要翻译： 用于产生具有纳秒范围的脉冲持续时间的微波脉冲的本发明的微波脉冲发生器具有产生恒定宽度的脉冲的脉冲发生器和用于产生微波振荡的微波谐振电路。 另外提供了脉冲缩短阶段，来自脉冲发生器的脉冲被馈送到脉冲缩短阶段，并且在纳秒范围内产生输出脉冲。 输出脉冲作为电源电压脉冲馈送到微波振荡器，其输出端可以拾取微波脉冲。 提供压控变容二极管装置来影响脉冲长度和/或脉冲幅度。
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公开(公告)号：US20040018821A1
公开(公告)日：2004-01-29
申请号：US10418905
申请日：2003-04-18
IPC分类号： H03G003/20
摘要： Apparatus for detecting the envelope of an RF signal that comprises an RF transistor operating essentially at a non-linear operating point at the RF frequency range; a DC power supply for feeding the RF transistor; a dummy load for terminating the output of the RF transistor; and at lease one impedance, through which the DC power supply feeds the RF transistor, for obtaining an indication signal developed across the impedance. The indication signal represents the envelope, from the fluctuating current drawn by the RF transistor from the DC power supply during the time period when the RF signal is applied to the feeding input.
摘要翻译： 用于检测RF信号的包络的装置，其包括基本上在RF频率范围的非线性工作点操作的RF晶体管; 用于馈送RF晶体管的DC电源; 用于终止RF晶体管的输出的虚拟负载; 并且至少一个阻抗，直流电源通过该阻抗馈送RF晶体管，以获得跨阻抗产生的指示信号。 指示信号表示在将RF信号施加到馈送输入的时间段期间由RF晶体管从直流电源引起的波动电流的包络线。
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公开(公告)号：US06509806B2
公开(公告)日：2003-01-21
申请号：US09887227
申请日：2001-06-20
申请人： Joseph Andrews
发明人： Joseph Andrews
IPC分类号： H03B520
CPC分类号： H03L7/18 , H03B5/1203 , H03B5/1231 , H03B5/1243 , H03C1/36 , H03J2200/29 , H03L7/099 , H03L2207/06
摘要： A frequency oscillator tuning process at the manufacturing stage is replaced with an adjustment of a resonant circuit in the frequency oscillator during an operation of the oscillator. The adjustment utilizes a crystal oscillator, a frequency oscillator such as a voltage-controlled oscillator (VCO), and a trimmer in a phase-locked loop configuration to determine a correction voltage required for an untrimmed VCO to operate at a nominally specified frequency by adjusting an input tuning voltage for a resonant circuit.
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公开(公告)号：US4806845A
公开(公告)日：1989-02-21
申请号：US859991
申请日：1986-05-05
申请人： Jiro Nakano , Takashi Ogawa
发明人： Jiro Nakano , Takashi Ogawa
摘要： In measuring and reproducing electric noise applied to an electronic component, the electric noise is envelope-detected and the envelope-detected noise is analog-digitally converted at high speed and stored. With this arrangement, electric noise, complicated and low in reproducibility, is accurately measured and stored. Further, a result obtained by performing a predetermined calculation on the stored value is digital-analog converted at high speed, reproducing the envelope-detected waveform as an analog signal, and a carrier signal having a center frequency of the electric noise is amplitude-modulated by the analog signal. As a consequence, imitation noise determined quantitatively can be accurately and repeatedly generated. Furthermore, when a repeated frequency of the electric noise is counted and stored, the basic frequency components of the electric noise can be measured without use of additional measuring instruments.
摘要翻译： 在测量和再现施加到电子部件的电噪声时，电噪声被包络检测，并且包络检测的噪声被高速模拟数字转换并存储。 通过这种布置，精确地测量和存储电噪声，复杂性和低再现性。 此外，通过对存储值执行预定计算而获得的结果被高速数字模拟转换，再现包络检测波形作为模拟信号，并且具有电噪声的中心频率的载波信号被调幅 通过模拟信号。 因此，可以准确和重复地产生定量确定的仿造噪声。 此外，当计算并存储电噪声的重复频率时，可以在不使用附加测量仪器的情况下测量电噪声的基本频率分量。
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25.发明授权Circuit for stabilizing frequency of FET oscillator as output power varies 失效用于稳定FET振荡器频率的电路作为输出功率变化
公开(公告)号：US4321563A
公开(公告)日：1982-03-23
申请号：US70551
申请日：1979-08-29
申请人： Paul Lesartre
发明人： Paul Lesartre
CPC分类号： H03L5/00 , H03B5/1203 , H03B5/1228 , H03B5/1262 , H03B5/1296 , H03C1/36 , H03B2200/0062
摘要： A frequency stabilizing device for a FET high-frequency oscillator comprises means for coupling an automatic biasing circuit included in the source-ground connection of the oscillator to a drain voltage supply circuit included in the drain-ground connection of the oscillator to provide simultaneous and oppositely directed variations of the resistance of the automatic biasing circuit and of the value of the drain-ground voltage supplied by the drain voltage supply circuit. A variation of this device can serve as a modulation stage wherein the coupling means comprise a modulating circuit arranged to supply two branches in parallel, each branch comprising a series arrangement of a shaping circuit and an impedance-matching circuit and one of which constitutes the automatic biasing circuit and the other one the drain voltage supply circuit.
摘要翻译： 用于FET高频振荡器的频率稳定装置包括用于将包括在振荡器的源极 - 接地连接中的自动偏置电路耦合到包括在振荡器的漏极 - 接地连接中的漏极电压电路的装置，以提供同时且相反的 自动偏置电路的电阻的定向变化以及由漏极电压供给电路提供的漏极 - 接地电压的值。 该装置的变体可以用作调制阶段，其中耦合装置包括调制电路，其被布置成并联提供两个分支，每个分支包括整形电路和阻抗匹配电路的串联布置，其中一个构成自动 偏置电路，另一个是漏极电压电路。
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公开(公告)号：US3955148A
公开(公告)日：1976-05-04
申请号：US571690
申请日：1975-04-25
申请人： Hideki Miura , Toshihiro Fujimoto
发明人： Hideki Miura , Toshihiro Fujimoto
CPC分类号： H03C1/36 , H01L29/0804
摘要： A sampling circuit is provided which includes a fourterminal semiconductor device of the type having a low emitter doping concentration. The signal to be sampled is fed continuously through the semiconductor device to an output terminal. A gating pulse applied between the gate and the emitter of the semiconductor device raising the current amplification characteristic h.sub.FE from a very low level to a high level during the period that the gating pulse is on. This causes a highly amplified signal to appear at the output. When the gating pulse is removed the current amplification characteristic h.sub.FE returns to low level and the amplitude of the signal at the output becomes very low.
摘要翻译： 提供一种采样电路，其包括具有低发射极掺杂浓度的类型的四端子半导体器件。 要采样的信号通过半导体器件连续馈送到输出端。 施加在半导体器件的栅极和发射极之间的门控脉冲将电流放大特性hFE从门极脉冲接通的时段期间从非常低的电平提高到高电平。 这会导致在输出端出现高度放大的信号。 当门控脉冲被去除时，电流放大特性hFE返回到低电平，并且输出端的信号幅度变得非常低。
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27.发明授权
公开(公告)号：US3719903A
公开(公告)日：1973-03-06
申请号：US3719903D
申请日：1971-06-25
发明人： GOODSON W
CPC分类号： H03C1/36
摘要： An inexpensive, two-transistor modem wherein the first transistor is a high gain amplifier connected to receive the modulating signal, and the second transistor is connected as a shunt modulator driven by a carrier signal source. Individual resistors are connected with the collector and emitter electrodes of the first transistor and so proportioned that the input baseband (for modulation) and carrier (for demodulation) signals are cancelled at a common summing node. The circuit is useful for double sideband suppressed or transmitted carrier applications, especially where the desired sidebands are very near, or go down to, the baseband frequencies.
摘要翻译： 一种廉价的双晶体管调制解调器，其中第一晶体管是连接以接收调制信号的高增益放大器，第二晶体管作为由载波信号源驱动的并联调制器连接。 各个电阻器与第一晶体管的集电极和发射极连接，并且成比例地使得输入基带（用于调制）和载波（用于解调）信号在公共求和节点处被消除。 该电路对于双边带抑制或传输载波应用是有用的，特别是在所需边带非常接近或下降到基带频率的情况下。
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公开(公告)号：US3648196A
公开(公告)日：1972-03-07
申请号：US3648196D
申请日：1970-02-26
申请人： AMPLIFON S A S
发明人： GAY GUIDO
CPC分类号： H03H11/245 , H03C1/36
摘要： A device for the switching and/or modulation of a signal, particularly in audiometry apparatus, comprising a voltage divider consisting of a field-effect transistor and at least one fixed resistor, the signal to be modulated being applied across the divider and withdrawn between said transistor and said fixed resistor.
摘要翻译： 一种用于切换和/或调制信号的装置，特别是在听力测量装置中，包括由场效应晶体管和至少一个固定电阻器组成的分压器，待调制的信号被施加在分频器上并在所述 晶体管和所述固定电阻器。
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公开(公告)号：US3506931A
公开(公告)日：1970-04-14
申请号：US3506931D
申请日：1967-02-21
申请人： US AIR FORCE
发明人： GALLO JAMES S , SHERRITT JAMES R
CPC分类号： H03C1/36
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30.发明授权
公开(公告)号：US3469212A
公开(公告)日：1969-09-23
申请号：US3469212D
申请日：1966-10-31
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