专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06512788B1 RF output spectrum measurement analyzer and method 失效
标题翻译：射频输出频谱测量分析仪及方法
公开(公告)号：US06512788B1
公开(公告)日：2003-01-28
申请号：US09199101
申请日：1998-11-24
申请人： John J Kuhn , Joseph M. Gorin
发明人： John J Kuhn , Joseph M. Gorin
IPC分类号： H04B1700
CPC分类号： H04L25/0202 , G01R23/16
摘要： The present invention provides an RF spectrum measurement analyzer and method and more particularly to a GSM output RF spectrum measurement analyzer and corresponding method. One preferred embodiment of the present invention is applicable to GSM applications. However, other embodiments could be applicable to the general class of Time Division Multiple Access (TDMA) signals of which GSM, PDC (Pacific Digital Cellular), NADC and the like are a part. According to one preferred embodiment of the present invention, the method includes the steps of acquiring an RF carrier signal; converting the acquired RF carrier signal to an IF signal; converting the IF signal to a digital signal of relatively wide bandwidth; FFT filtering the digital signal to measure multiple offset frequencies within the IF bandwidth; and mathematically applying a resolution bandwidth filter at each offset. A further embodiment includes the steps of inverse FFT filtering the output of the resolution bandwidth filter and measuring the power in the time domain.
摘要翻译：本发明提供一种RF频谱测量分析仪和方法，更具体地说，涉及一种GSM输出RF频谱测量分析仪及相应的方法。本发明的一个优选实施例可应用于GSM应用。然而，其他实施例可以适用于其中GSM，PDC（太平洋数字蜂窝），NADC等是其一部分的一般类别的时分多址（TDMA）信号。根据本发明的一个优选实施例，该方法包括以下步骤：获取RF载波信号; 将所获取的RF载波信号转换为IF信号; 将IF信号转换成相对宽带宽的数字信号; 对数字信号进行FFT滤波，以测量IF带宽内的多个偏移频率; 并在每个偏移量上数学地应用分辨率带宽滤波器。另一实施例包括对分辨率带宽滤波器的输出进行逆FFT滤波并在时域中测量功率的步骤。

2. 发明授权

US4978866A Ramp circuit for control loop 失效
标题翻译：用于控制回路的斜坡电路
公开(公告)号：US4978866A
公开(公告)日：1990-12-18
申请号：US214367
申请日：1988-07-01
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： C03B37/07 , G05D23/22 , H03K4/50
CPC分类号： H03K4/50 , C03B37/07 , G05D23/1906 , G05D23/22
摘要： A ramp circuit for a control loop which receives a signal from a controller and sends a signal to a controllable means to limit the slew rate of the controller signal. A capacitor functions as a storage means and a reset means is provided to rapidly discharge the capacitor in the event of a decrease in power to the control loop. The capacitor is charged through a diode which limits discharge in normal operation. The discharge and reset is performed by a normally reverse biased diode and series resistance connected to the controller positive supply voltage. A current limiting means is provided to charge the capacitor a lower linear rate by turning on a transistor and shunting excess current around the capacitor. An external reset is provided by an additional diode and series resistance for connection to a remote positive supply voltage or relay contact. The output is buffered by an emitter follower to limit loading by the controllable means and protection circuitry to provide immunity to induced electrical currents at the output.
摘要翻译：用于控制回路的斜坡电路，其接收来自控制器的信号并将信号发送到可控制装置以限制控制器信号的转换速率。电容器用作存储装置，并且提供复位装置以在对控制环路的功率降低的情况下快速地放电电容器。电容器通过二极管充电，限制正常工作时的放电。放电和复位由正反馈偏置二极管和连接到控制器正电源电压的串联电阻进行。提供电流限制装置以通过接通晶体管并且分流电容器周围的过剩电流来向电容器充电较低的线性速率。外部复位由附加的二极管和串联电阻提供，用于连接到远端的正电源电压或继电器触点。输出由射极跟随器缓冲，以限制可控制装置和保护电路的负载，以提供对输出端感应电流的抗扰性。

3. 发明授权

US4306694A Dual signal frequency motion monitor and broken rail detector 失效
标题翻译：双信号频率运动监视器和断路检测器
公开(公告)号：US4306694A
公开(公告)日：1981-12-22
申请号：US162470
申请日：1980-06-24
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： B61L23/04 , B61L29/32 , B61L1/20
CPC分类号： B61L23/044 , B61L29/32
摘要： A highway crossing warning system for monitoring the motion and predicting the time of arrival of an approaching train at the highway crossing and for detecting the presence of a broken rail in the approach zone by feeding dual frequency signals into the track rails and measuring the track impedances at the two frequencies and the phase angle of the lower of the two frequencies.
摘要翻译：一种高速公路穿越预警系统，用于监测运动并预测接近的列车在公路交叉口的到达时间，并通过将双频信号馈送到轨道轨道和测量轨道阻抗来检测接近区域中是否存在断轨在两个频率和两个频率的较低的相位角。

4. 发明授权

US4136315A Low and high frequency oscillators having common voltage regulator circuit 失效
标题翻译：具有普通电压调节器电路的低频和高频振荡器
公开(公告)号：US4136315A
公开(公告)日：1979-01-23
申请号：US819659
申请日：1977-07-27
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： B61L1/18 , H03B5/12 , H03B5/26 , H03C1/36 , H03B3/00
CPC分类号： H03B5/26 , B61L1/188 , H03B5/1206 , H03B5/1296 , H03C1/36
摘要： A low frequency modulating signal and a high frequency carrier signal circuit employing a twin-T oscillator having an integrated circuit operational amplifier for producing the modulating signal and an L-C resonant feedback oscillator having a transistor amplifier for producing the carrier signal, and a monitoring shunt regulator for supplying a reference potential to the twin-T oscillator and biasing and operating potentials to the L-C resonant feedback oscillator and for deactivating the L-C resonant feedback oscillator when an increase in resistance occurs in the shunt regulator.

5. 发明授权

US4775400A Method of controlling glass fiber formation and control system 失效
标题翻译：控制玻璃纤维形成和控制系统的方法
公开(公告)号：US4775400A
公开(公告)日：1988-10-04
申请号：US112573
申请日：1987-10-22
申请人： Larry G. Wright , John J. Kuhn
发明人： Larry G. Wright , John J. Kuhn
IPC分类号： B65H63/08 , C03B37/02 , C03B37/07 , D01G23/04 , G05D23/22
CPC分类号： B65H63/084 , C03B37/07 , D01G23/045 , G05D23/1917 , G05D23/22 , B65H2701/31 , Y10S65/13
摘要： An improved fiber glass bushing control system. One aspect of the system has a weighing means for weighing complete collections of glass fiber strands produced from forming from a bushing through attenuation, a monitoring means for the time of attenuation at constant strand speed and a program computer means that receives signals from the weighing means and the monitoring means. The program computer means has a means for establishing a database of the weights and times, a means for determining the throughput of the glass from the bushing from the weights and times, a means for determining average throughputs and including these averages in the database, a means for comparing the average throughputs to a standard set throughput, and a means for initiating an adjustment to the main bushing temperature controller, when the average throughput deviates from the set point throughput by a value greater than the sensitivity factor of the bushing. The system has circuit means for carrying the adjustment signals to the controller and to the bushing for a temperature change. The system can have a second bushing controller connected across two sections of the bushing to regulate relative current flow in the two sections and the program computer means additionaly has means for determining the difference in throughputs between collections of strand produced from each section of the bushing at the same time and placing these difference values in the database, and a means for averaging the difference values, and a means for comparing the difference values to determine if they are other than the value of zero, and a means for adjusting the segment bushing controller to achieve average difference value in throughput other than zero.

6. 发明授权

US4594087A Three-terminal controller for fiber glass bushing 失效
标题翻译：玻璃纤维套管三端控制器
公开(公告)号：US4594087A
公开(公告)日：1986-06-10
申请号：US718609
申请日：1985-04-01
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： G05D23/19 , C03B37/07 , C03B37/09 , G05D23/00 , G05D23/22
CPC分类号： C03B37/091 , C03B37/07 , G05D23/1928 , G05D23/22 , Y10S65/04
摘要： A bushing controller circuit for regulating the current flow through a fiber glass bushing to thereby control the temperature of the molten glass being drawn into fibers is disclosed. The bushing temperature is measured by a plurality of thermocouples which produce an average temperature reading that is used to control the power fed to the bushing. The bushing controller circuit is a three-terminal device connected across two sections of the bushing to regulate relative current flow in the two sections, in order to control the amount of fiber produced by each section. The bushing controller circuit includes a pair of timing circuits which operate in response to the polarity and magnitude of a control signal, produced at a remote control panel, to control the conductivity of a corresponding pair of current control devices connected across respective sections of the bushing. A reset circuit produces a signal corresponding to the zero crossing of the input AC power to synchronize the timing circuits.
摘要翻译：公开了一种衬套控制器电路，用于调节通过玻璃纤维套管的电流，从而控制被拉入纤维中的熔融玻璃的温度。衬套温度由多个热电偶测量，这些热电偶产生用于控制供给衬套的功率的平均温度读数。衬套控制器电路是连接在衬套的两个部分上的三端子器件，以调节两个部分中的相对电流，以便控制由每个部分产生的纤维的量。衬套控制器电路包括一对定时电路，其响应于在遥控面板产生的控制信号的极性和幅度而工作，以控制连接在衬套的相应部分上的相应的一对电流控制装置的电导率。复位电路产生对应于输入AC电源的过零点的信号，以使定时电路同步。

7. 发明授权

US4324376A Railroad highway crossing warning system 失效
标题翻译：铁路公路交叉预警系统
公开(公告)号：US4324376A
公开(公告)日：1982-04-13
申请号：US162471
申请日：1980-06-24
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： B61L29/00 , B61L29/28 , B61L1/02
CPC分类号： B61L29/284 , B61L29/00
摘要： A railroad highway crossing warning system including pickup coils for sensing current flowing in the track rails of an approach zone, a circuit for sensing the voltage across the track rails, band-pass filter circuits for filtering the voltage and current derived from the track rails, impedance calculator circuits for calculating the track impedance, phase detector circuits for detecting the phase angle between the voltage and current, a multiplier circuit for linearizing the track impedance by multiplying the track impedance by a function of the phase angle, a data sampler circuit for sampling the linearized track impedance at given periodic intervals, a motion detector and crossing predictor circuit for detecting the motion of a train and for predicting the time of arrival at the crossing by comparing the predicted time of arrival with an advanced warning time, and a logic gate circuit for activating the warning apparatus at the crossing when the predicted time of arrival is less than the advanced warning time.
摘要翻译：一种铁路公路穿越警告系统，包括用于感测在接近区域的轨道中流动的电流的拾取线圈，用于感测轨道轨道两端的电压的电路，用于滤除从轨道导出的电压和电流的带通滤波器电路，用于计算轨道阻抗的阻抗计算器电路，用于检测电压和电流之间的相位角的相位检测器电路，用于通过将轨道阻抗乘以相位角的函数来线性化轨道阻抗的乘法器电路，用于采样的数据采样器电路给定周期间隔的线性化轨道阻抗，用于检测列车的运动的运动检测器和交叉预测器电路，以及通过将预测到达时间与高级警告时间进行比较来预测到达交叉点的时间;以及逻辑门当预计到达时间较短时，在交叉路口激活警告装置的电路 n高级警告时间。

8. 发明授权

US4314374A High power audio frequency transmitter 失效
标题翻译：大功率音频发射机
公开(公告)号：US4314374A
公开(公告)日：1982-02-02
申请号：US850177
申请日：1977-11-10
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： B61L1/18 , B61L23/04 , B61L23/16 , H03F3/72 , H04B1/04
CPC分类号： B61L23/044 , B61L1/188 , B61L23/168 , H03F3/72
摘要： A high power amplitude modulated audio frequency transmitter having a Twin-T low frequency oscillator, a tickler coil high frequency oscillator, a switching regulator and a switching amplifier. The Twin-T low frequency oscillator produces a sine wave modulating signal which is fed to the switching regulator. The tickler coil high frequency oscillator produces a carrier signal which is fed to the input end of the switching amplifier. The output signal of the switching regulator is fed to the output end of the switching amplifier so that a sine wave modulated signal is developed on the output of the switching amplifier.
摘要翻译：具有Twin-T低频振荡器，tick线圈高频振荡器，开关稳压器和开关放大器的高功率调幅音频发射机。 Twin-T低频振荡器产生正弦波调制信号，该信号被馈送到开关稳压器。起搏器线圈高频振荡器产生馈送到开关放大器的输入端的载波信号。开关稳压器的输出信号被馈送到开关放大器的输出端，使得在开关放大器的输出上产生正弦波调制信号。

9. 发明授权

US4079444A D.C. to A.C. electronic inverter with overload protection 失效
标题翻译： D.C.到A.C.电子逆变器具有过载保护
公开(公告)号：US4079444A
公开(公告)日：1978-03-14
申请号：US673872
申请日：1976-04-05
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： H02H7/122 , H02M7/538
CPC分类号： H02H7/1227 , H02M7/53806
摘要： A solid-state inverter having a programmed unijunction transistor oscillator for converting a d.c. supply voltage into a.c. oscillations which trigger a bistable transistor multivibrator for producing square-wave signals which are applied to a compound-connected transistor amplifier for energizing a load and having an overload protection circuit which disables the compound-connected transistor amplifier and which, in turn, deenergizes the load during the presence of an overload condition.
摘要翻译：一种固态逆变器，具有编程的单结晶体管振荡器，用于转换直流电源电压进入。触发双稳态晶体管多谐振荡器用于产生方波信号的振荡，其施加到复合连接的晶体管放大器用于激励负载并具有禁用复合连接晶体管放大器的过载保护电路，从而使负载断电在过载条件的存在期间。

10. 发明授权

US4931075A High current multiterminal bushing controller 失效
标题翻译：大电流多端套管控制器
公开(公告)号：US4931075A
公开(公告)日：1990-06-05
申请号：US390054
申请日：1989-08-07
申请人： John J. Kuhn
发明人： John J. Kuhn
IPC分类号： C03B37/07 , C03B37/09 , H05B3/00
CPC分类号： C03B37/07 , C03B37/091 , H05B3/0023 , Y10S65/04
摘要： An improved bushing controller is shown which utilizes an auxiliary transformer in each of the variable impedance circuits in the controller and the bushing tha the controller is connected to increase the current capability of the controller by a significant percentage. Improved performance of fiber glass bushings producing multiple forming packages is realized.
摘要翻译：示出了改进的套管控制器，其在控制器中的每个可变阻抗电路中使用辅助变压器，并且连接控制器的套管，以将控制器的电流能力提高显着百分比。实现了产生多个成形包装的玻璃纤维衬套的性能的提高。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式