专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

WO2005011102A1 APPARATUS FOR GENERATING CLOCK PULSES USING A DIRECT DIGITAL SYNTHESIZER 审中-公开
标题翻译：使用直接数字合成器产生时钟脉冲的装置
公开(公告)号：WO2005011102A1
公开(公告)日：2005-02-03
申请号：PCT/KR2004/001878
申请日：2004-07-26
申请人： UTSTARCOM KOREA LIMITED , KIM, In Gon
发明人： KIM, In Gon
IPC分类号： H03B28/00
CPC分类号： G06F1/0328 , H03L7/06
摘要： The present invention relates to an apparatus for generating clock pulses using a Direct Digital Synthesizer (DDS). The present invention seeks to solve the problems of the conventional clock generator using a Phase Locked Loop (PLL) circuit where the output clock frequency cannot be varied and the output clock signal is degraded because of jitter and phase noise. The claimed apparatus comprises a phase accumulator, a phase-to-magnitude converter, a Digital-to-Analog (DA) converter, a band pass filter, and a comparator, which are serially connected. A 10XPLL multiplier provides a 196.608MHz clock signal to the phase accumulator, the phase-magnitude converter and the digital analog converter, respectively. The phase accumulator also receives a Frequency Tuning Word (FTW) and using this FTW and the 196.608MHz clock, outputs a desired specific frequency value. This frequency value is processed through the phase-magnitude converter, the digital analog converter, a band pass filter and a comparator in order to become a square wave of a desired frequency with a low jitter.
摘要翻译：本发明涉及使用直接数字合成器（DDS）产生时钟脉冲的装置。本发明寻求解决传统时钟发生器使用锁相环（PLL）电路的问题，其中输出时钟频率不能改变，并且输出时钟信号由于抖动和相位噪声而降级。所要求保护的装置包括串联连接的相位累加器，相量幅度转换器，数模（DA）转换器，带通滤波器和比较器。 10XPLL乘法器分别向相位累加器，相位幅度转换器和数字模拟转换器提供196.608MHz的时钟信号。相位累加器还接收频率调谐字（FTW），并使用该FTW和196.608MHz时钟输出所需的特定频率值。该频率值通过相位幅度转换器，数字模拟转换器，带通滤波器和比较器进行处理，以便成为具有低抖动的期望频率的方波。

22. 发明申请

WO2003043177A3 AGILE SPREAD WAVEFORM GENERATOR AND PHOTONIC OSCILLATOR 审中-公开
公开(公告)号：WO2003043177A3
公开(公告)日：2003-05-22
申请号：PCT/US2002/036849
申请日：2002-11-15
申请人： HRL LABORATORIES, LLC , YAP, Daniel , SAYYAH, Keyvan
发明人： YAP, Daniel , SAYYAH, Keyvan
IPC分类号： H03B28/00
摘要： An agile spread spectrum waveform generator comprises a photonic oscillator and an optical heterodyne synthesizer. The photonic oscillator comprises a multi-tone optical comb generator for generating a series of RF comb lines on an optical carrier. The optical heterodyne synthesizer includes first and second phase-locked lasers; the first laser feeding the multi-tone optical comb generator and the second laser comprising a rapidly wavelength-tunable single tone laser whose output light provides a frequency translation reference. A photodetector is provided for heterodyning the frequency translation reference with the optical output of the photonic oscillator to generate an agile spread spectrum waveform.

23. 发明申请

WO03043177A2 AGILE SPREAD WAVEFORM GENERATOR AND PHOTONIC OSCILLATOR 审中-公开
标题翻译： AGILE SPREAD波形发生器和光子振荡器
公开(公告)号：WO03043177A2
公开(公告)日：2003-05-22
申请号：PCT/US0236849
申请日：2002-11-15
申请人： HRL LAB LLC , YAP DANIEL , SAYYAH KEYVAN
发明人： YAP DANIEL , SAYYAH KEYVAN
IPC分类号： G02F2/00 , H01S3/067 , H03B21/02 , H03B28/00 , H04B10/04 , H04B10/12 , H04J13/06 , H04J14/00
CPC分类号： H04B10/505 , G02F2/02 , H01S3/0057 , H03B21/02 , H03B28/00
摘要： An agile spread spectrum waveform generator comprises a photonic oscillator and an optical heterodyne synthesizer. The photonic oscillator comprises a multi-tone optical comb generator for generating a series of RF comb lines on an optical carrier. The optical heterodyne synthesizer includes first and second phase-locked lasers; the first laser feeding the multi-tone optical comb generator and the second laser comprising a rapidly wavelength-tunable single tone laser whose output light provides a frequency translation reference. A photodetector is provided for heterodyning the frequency translation reference with the optical output of the photonic oscillator to generate an agile spread spectrum waveform.
摘要翻译：敏捷扩展频谱波形发生器包括光子振荡器和光学外差合成器。光子振荡器包括用于在光学载体上产生一系列RF梳状线的多音调光梳发生器。光学外差合成器包括第一和第二锁相激光器; 提供多音调光梳发生器的第一激光器和包括其输出光提供频率变换参考的快速波长可调谐单音激光器的第二激光器。提供光电检测器，用于将频率转换参考与光子振荡器的光学输出进行外差以产生灵活的扩展频谱波形。

24. 发明申请

WO0145195A3 MULTI-FREQUENCY RESONANT MICROWAVE CAVITY 审中-公开
标题翻译：多频共振微波炉
公开(公告)号：WO0145195A3
公开(公告)日：2002-04-18
申请号：PCT/US0033951
申请日：2000-12-15
申请人： LOCKHEED CORP
发明人： WOOD JAMES RICHARD
IPC分类号： H03B5/18 , H01P1/20 , G02F1/00 , G02F2/00 , H01P1/12 , H01P7/06 , H03B28/00
CPC分类号： H03B5/1817
摘要： The present invention includes a housing having two or three microwave cavities overlapping one another, the cavities being defined by frequency selective barriers. The housing further includes a nonlinear material layer within the cavities. Through the use of different input and output port configurations with the housing cavity, three different embodiments are possible, including a switched microwave frequency signal multiplier, a microwave parametric amplifier, and a switched microwave amplifier. By placing a Q-switch in series with the exit port, a high efficiency microwave frequency tripler is formed by appropriately selecting the nonlinear material. The use of a circulator on the input port and a separate pump port creates a microwave parametric amplifier where the microwave pump frequency is a multiple of the microwave input signal. An input port, a Q-switched exit port, and a pump port are required to create the switched microwave amplifier that provides higher energy pulses based upon the input microwave signal.
摘要翻译：本发明包括具有彼此重叠的两个或三个微波空腔的壳体，空腔由频率选择性屏障限定。壳体还包括空腔内的非线性材料层。通过使用具有壳体腔的不同的输入和输出端口配置，可以有三种不同的实施例，包括开关微波频率信号乘法器，微波参量放大器和开关式微波放大器。通过将Q开关与出口串联放置，通过适当选择非线性材料形成高效微波频率三倍。在输入端口和单独的泵端口上使用环行器产生微波参数放大器，其中微波泵频率是微波输入信号的倍数。需要输入端口，Q开关出口和泵端口来创建基于输入微波信号提供更高能量脉冲的开关式微波放大器。

25. 发明申请

WO99067877A1 SYNTHESISING A SINE WAVE 审中-公开
标题翻译：合成一个正弦波
公开(公告)号：WO99067877A1
公开(公告)日：1999-12-29
申请号：PCT/GB1999/001932
申请日：1999-06-17
IPC分类号： G01N29/00 , G01H5/00 , H03B21/00 , H03B23/00 , H03B28/00
CPC分类号： H03B28/00 , H03B21/00 , H03B23/00
摘要： A method and apparatus for synthesising an approximation to a sine wave comprising generating a number of pulse width modulated signals, each having a predetermined duty cycle and being the same frequency as each other, from a clock signal. The generated pulse width modulated signals are then combined to produce an approximation to a sine wave having the same frequency as the pulse width modulated signals. The clock signal is provided by an oscillator arranged to produce clock signals over continuous range of frequencies so that approximations to a sine wave can be produced over a continuous range of frequencies.
摘要翻译：一种用于合成正弦波的近似的方法和装置，包括从时钟信号产生每个具有预定占空比并且彼此相同频率的脉冲宽度调制信号。产生的脉冲宽度调制信号然后被组合以产生与脉冲宽度调制信号具有相同频率的正弦波的近似。时钟信号由布置成在连续频率范围内产生时钟信号的振荡器提供，使得可以在连续的频率范围上产生对正弦波的近似。

26. 发明申请

WO99033182A2 CIRCUIT INCLUDING A DISCRETE TIME OSCILLATOR 审中-公开
标题翻译：包含时间离散振荡器的电路
公开(公告)号：WO99033182A2
公开(公告)日：1999-07-01
申请号：PCT/IB1998/002020
申请日：1998-12-14
IPC分类号： G11B20/14 , G06F1/025 , H03B28/00 , H03L7/07 , H03L7/087 , H03L7/099 , H03L7/197 , H03L7/22 , H04L7/033
CPC分类号： G06F1/025 , H03L7/07 , H03L7/0994 , H03L7/1976
摘要： A discrete time oscillator (DTO) has periods which each have a respective length of an integer number of clock cycles. The discrete time oscillator includes facilities for applying noise shaping to the lengths.
摘要翻译：本发明涉及一种离散时间振荡器（DTO），其包括每个具有等于整数个时钟周期的相应长度的周期。时间振荡器包括使其能够将这些长度应用于寄生噪声的整形的装置。

27. 发明申请

WO98045950A1 AFC-DIGITAL TUNING THROUGH MUTUAL DIGITAL SYNTHESIS 审中-公开
标题翻译： DIGITAL AFC地点由往复运动DDS
公开(公告)号：WO98045950A1
公开(公告)日：1998-10-15
申请号：PCT/DE1998/000436
申请日：1998-02-13
IPC分类号： H03B28/00 , H03L1/02 , H03L7/099 , H03L7/18
CPC分类号： H03L7/0994 , H03L1/026 , H03L7/1806
摘要： The present invention relates to an afc-digitial tuning circuit having an oscillator (1), a digital synthesis system (DDS) (2) to which the frequency fxtal of the oscillator (2) is directed as a clock rate and which generates an output signal with the frequency fmut, as well as a frequency comparing facility (3) which determines a deviation of the output frequency fmut in the digital synthesis system (2) from a control frequency fref and generates a digital output signal (Sd) that reproduces said deviation. The digital output signal Sa is then directed to the digital synthesis facility (2) as an addition value. The afc-circuit enables a signal with a frequency fmut to be generated which is highly accurate and thermocompensated.
摘要翻译：本发明涉及一种用于自动频率控制用的振荡器（1），数字合成装置（DDS）（2），其被提供给振荡器的频率值为fXTAL一个电路（AFC）（2）作为时钟和输出 fmut产生的频率，并且频率比较器（3），其是fmut数字合成装置（2）和参考频率fref的输出频率之间的差来确定，并产生所确定的频率差，再生用的数字输出信号Sd。然后，将数字输出信号Sa提供给数字合成器（2）作为加法值。该电路用于自动频率控制，具有可以fmut该被生成的频率的信号是高精确度和温度补偿。

28. 发明申请

WO1998032219A1 METHOD AND CIRCUIT CONFIGURATION FOR PRODUCING SINUSOIDAL/COSINUSOIDAL OSCILLATIONS 审中-公开
标题翻译：方法和电路，用于产生正弦/余弦振荡
公开(公告)号：WO1998032219A1
公开(公告)日：1998-07-23
申请号：PCT/DE1997002922
申请日：1997-12-17
申请人： DEUTSCHE TELEKOM AG , HUBER, Klaus
发明人： DEUTSCHE TELEKOM AG
IPC分类号： H03B28/00
CPC分类号： H03B28/00 , G06G7/22 , H03B19/00
摘要： The present invention relates to a method and a circuit configuration enabling, using the Tchebycheff polynoms, the construction in an universal way of frequency multipliers as well as sine/cosine oscillators, i.e. circuits often needed in the communication technology. A series of Tchebycheff modules as well as various multipliers and summing elements are realized in an integrated circuit, which then executes the most various functions, depending on the external wiring. Among the additional functions indicated which are technically not easy to realize with such a chip, the following can be mentionned: the synthesis of all function plotting through the representation by the Tchebycheff series, the use of Tn(x) as an amplifier with the amplifying factor n for sin(nx) APPROX nx, as well as the odd value of n.
摘要翻译：它在如何在一个通用的方式，频率和的正弦/ Cosinusgeneratoren构建使用切比雪夫多项式的方法和电路布置来描述，也就是电路，这是经常需要在电信。一系列的切比雪夫模块以及各种乘法器和加法在一个集成电路，其然后执行根据外部布线不同的功能实现。随着越来越多的功能在技术上容易与这样的芯片来实现，的随机功能特征的合成由函数的表示通过一个切比雪夫系列和使用Tn的方式确定（X）与所述放大因子n罪（NX）APPROX的nx，以及放大器 n为奇数指定。

29. 发明申请

WO2021060280A1 電流波形生成回路および発光素子駆動回路审中-公开
公开(公告)号：WO2021060280A1
公开(公告)日：2021-04-01
申请号：PCT/JP2020/035810
申请日：2020-09-23
申请人：ソニーセミコンダクタソリューションズ株式会社
发明人：田畑　満志 , 増田　貴志 , 鈴木　大輔
IPC分类号： H03B28/00 , H03K4/02 , H03K17/687
摘要：電流波形生成回路は、電流ミラー元となるミラー元トランジスタ（Ｔｒ０）と、電流ミラー経路に電気的に接続された状態でミラー元トランジスタ（Ｔｒ０）の電流ミラー先となる、複数のミラー先トランジスタ（Ｔｒ１～Ｔｒ８…）と、を有する電流ミラー部（ＣＭａ）と、複数のミラー先トランジスタ（Ｔｒ１～Ｔｒ８…）のうち、電流ミラー経路に電気的に接続するミラー先トランジスタとして有効になるトランジスタの数を変化させる切替え部（ＳＷａ）と、生成すべき電流波形の波形形状に基づいて、切替え部（ＳＷａ）によって電気的に接続するミラー先トランジスタとして有効になるトランジスタの数を制御する制御部と、を有し、電流ミラー部（ＣＭａ）の出力電流を出力する。

30. 发明申请

WO2016134384A1 DEVICE FOR TERAHERTZ SIGNAL GENERATION AND TRANSMITTER 审中-公开
标题翻译： TERAHERTZ信号发生器和发射机的设备
公开(公告)号：WO2016134384A1
公开(公告)日：2016-08-25
申请号：PCT/US2016/018991
申请日：2016-02-22
申请人： CORNELL UNIVERSITY
发明人： HAN, Ruonan , AFSHARI, Ehsan
IPC分类号： H03B5/20 , H03B27/00 , H03B28/00
CPC分类号： H03B5/1847 , H03B5/1215 , H03B5/1231 , H03B2200/0008 , H03B2200/0062 , H03B2200/007 , H03B2200/0076 , H03B2200/0084
摘要： A high-power transmitter with a fully-integrated phase Iocking capability is disclosed and characterized. Also provided herein is a THz radiator structure based on a return-path gap coupler, which enables the high-power generation of the disclosed transmitter, and a self-feeding oscillator suitable for use with the transmitter.
摘要翻译：公开并表征了具有完全集成相位Iocking能力的大功率发射器。本文还提供了一种基于返回路径间隙耦合器的THz辐射器结构，其能够实现所公开的发射机的高功率发生，以及适于与发射机一起使用的自馈振荡器。

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