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    • 12. 发明公开
    • RADIO FREQUENCY AMPLIFIER
    • 无线电频率放大器
    • EP3210299A1
    • 2017-08-30
    • EP15790637.1
    • 2015-10-20
    • Cambridge Consultants Limited
    • DONOGHUE, Bryan JamesPHILLIPS, DesmondROBERT, TanHERVE, Peter-Contesse
    • H03F3/217H03M3/02
    • H03F3/2175H03F2200/331H03M3/30H03M3/47H03M3/50
    • Successive blocks of an input signal are fed to M respective delta-sigma modulator channels 11, in which the output FIFOs 17 are filled at a rate that is about 1/M of the rate at which the contents of these FIFOs 17 are read through the multiplexer 20. This use of multiple parallel channels allows a lower clock rate to be used, so that delta-sigma modulators for switching UHF amplifiers become practical. Transients that may be evident upon a changeover between channels are reduced by overlaps (figure 5). The channels may be reset between the processing of data blocks, so that instability, to which high-order delta-sigma modulators are susceptible, does not have time to arise. The modulator may be used in class-S RF amplifiers or in analogue-to-digital converters.
    • 输入信号的连续块被馈送到M个相应的德耳塔西格玛调制器通道11,其中输出FIFO 17以大约为通过滤波器读取这些FIFO 17的内容的速率的1 / M的速率填充 多路复用器20.这种多个并行通道的使用允许使用较低的时钟速率,使得用于切换UHF放大器的Δ-Σ调制器变得实用。 通道间切换时可能出现的瞬态会因重叠而减少(图5)。 信道可以在数据块的处理之间重置,使得高阶Δ-Σ调制器易受影响的不稳定性没有时间出现。 该调制器可用于S类RF放大器或模数转换器。
    • 14. 发明公开
    • CIRCUITRY AND METHOD FOR CONVERTING ANALOG SIGNAL TO DIGITAL VALUE REPRESENTATION
    • 将模拟信号转换为数字值表示的电路和方法
    • EP3182597A1
    • 2017-06-21
    • EP15200350.5
    • 2015-12-16
    • IMEC VZW
    • CRANINCKX, JanDE BOCK, MaartenBORREMANS, Jonathan
    • H03M3/00
    • H03M3/458H03M1/00H03M1/12H03M1/365H03M3/30H03M3/322H03M3/39H03M3/496
    • The present invention relates to a circuitry and a method for converting an analog signal to a digital value representation, said circuitry (10) comprising: an incremental sigma-delta analog-to-digital converter, ADC, (20); a first input line (12) for providing a primary analog signal representing a sensor measurement to the incremental sigma-delta ADC (20), a second input line (14) for providing a secondary analog signal to the incremental sigma-delta ADC (20), said circuitry (10) being configured such that the incremental sigma-delta ADC (20) receives the primary analog signal during a first period ( T ADC1 ) and receives the secondary analog signal during a second period ( T ADC2 ), and said circuitry (10) further comprising a filter (30), said filter (30) being configured to weigh the digital values in a sequence of digital values output by the incremental sigma-delta ADC (20) and to output a single digital value representing the sensor measurement.
    • 本发明涉及用于将模拟信号转换为数字值表示的电路和方法,所述电路(10)包括:增量Σ-Δ模数转换器ADC(20); 第一输入线(12),用于向递增Σ-ΔADC(20)提供表示传感器测量的初级模拟信号;第二输入线(14),用于向递增Σ-ΔADC(20)提供第二模拟信号 ),所述电路(10)被配置为使得所述递增Σ-ΔADC(20)在第一时间段(TADC1)期间接收所述主要模拟信号并且在第二时间段(TADC2)期间接收所述次要模拟信号,并且所述电路 10)还包括滤波器(30),所述滤波器(30)被配置为对由递增sigma-delta ADC(20)输出的数字值序列中的数字值进行加权并输出代表传感器测量值的单个数字值 。
    • 15. 发明公开
    • GENERATING COMPARATOR THRESHOLDS USING A ROTATING RING OF RESISTORS
    • ERZEUGUNG VON KOMPARATORSCHWELLEN MIT EINEM ROTIERENDEN RING VONWIDERSTÄNDEN
    • EP3101811A1
    • 2016-12-07
    • EP16170418.4
    • 2016-05-19
    • Analog Devices Global
    • YANG, Wenhua W.SCHREIER, Richard E.
    • H03M1/06H03M3/00H03M1/36
    • H03M1/066H03M1/365H03M3/30H03M3/50
    • Data converters convert signals in analog form to digital form or from digital form to analog form. Due to mismatches between devices that are intended to be identical (unary elements), some data converters outputs may have undesirable characteristics, such as non-linearities. Shuffling the inputs to the unary elements based on a pseudo-random sequence is a technique that can average out the mismatches over time. However, shuffling generally requires a complex switch matrix, and can potentially impact the speed of the converter. To address mismatches, a high speed technique for rotating comparator thresholds is implemented to effectively rotate an array of unary digital-to-analog converter elements. The technique is particularly advantageous for addressing mismatches in unary digital-to-analog converters used for reconstructing a quantized analog signal within delta-sigma analog-to-digital converter.
    • 数据转换器将模拟形式的信号转换为数字形式或从数字形式转换为模拟形式。 由于设计为相同(一元)的设备之间的不匹配,一些数据转换器输出可能具有不希望的特性,如非线性。 基于伪随机序列对一元元素的输入进行混洗是可以随时间推移不平衡的技术。 然而,混洗通常需要复杂的开关矩阵,并且可能会影响转换器的速度。 为了解决不匹配,实现了用于旋转比较器阈值的高速技术来有效地旋转一元数模转换器元件阵列。 该技术对于解决用于在Δ-Σ模数转换器内重建量化模拟信号的一元数模转换器中的不匹配特别有利。
    • 18. 发明公开
    • 4N+1 LEVEL CAPACITIVE DAC USING N CAPACITORS
    • 使用N个电容的4N + 1电平电容DAC
    • EP2974032A1
    • 2016-01-20
    • EP14720287.3
    • 2014-03-10
    • Microchip Technology Incorporated
    • QUIQUEMPOIX, Vincent
    • H03M1/06H03M3/04
    • H03M1/802H03M1/0665H03M3/30H03M3/424H03M3/464
    • A digital-to analog converter (DAC) of the charge transfer type for use in a sigma delta modulator, includes a capacitor switch unit operable to generate a 4n+l output levels, comprising: a plurality of second switching units for coupling first terminals of a plurality of reference capacitor pairs with either a positive or a negative reference signal; wherein the second terminals of the plurality of reference capacitor pairs are coupled in parallel, respectively; wherein for even transfers a single switching combination is provided to achieve linearity and wherein for odd transfers an average of different switching combinations is provided to achieve linearity; wherein an even transfer is when an input of the DAC is even and an odd transfer is when an input to the DAC is odd.
    • 用于Σ-Δ调制器中的电荷传输类型的数模转换器(DAC)包括可操作用于生成4n + 1输出电平的电容器开关单元,该电容器开关单元包括:多个第二开关单元,用于将 具有正参考信号或负参考信号的多个参考电容器对; 其中所述多个参考电容器对的第二端子分别并联耦合; 其中为了偶数传输,提供单个开关组合以实现线性,并且其中对于奇数传输,提供平均不同开关组合以实现线性; 其中偶数传输是当DAC的输入是偶数时并且奇数传输是当DAC的输入是奇数时。
    • 19. 发明公开
    • VERFAHREN UND VORRICHTUNG ZUM ERZEUGEN EINES DIGITALEN SIGNALS
    • 方法和设备,用于生成数字信号
    • EP2949045A2
    • 2015-12-02
    • EP14701215.7
    • 2014-01-24
    • Lenze Automation GmbH
    • DÜSTERBERG, DirkSTICHWEH, Heiko
    • H03M3/00H02M5/00
    • H03M3/458H02M5/00H03M1/00H03M1/12H03M3/30H03M3/504
    • The invention relates to a method for producing a digital signal (DS) from an analog signal (UA) produced by means of a frequency converter on the basis of a pulse-width modulation having a variable period duration, wherein values of the digital signal (DS) correspond to a mean of the analog signal (UA) over an associated period duration of the pulse-width modulation, comprising the following steps: producing a bit stream (BS) as a function of the analog signal (UA) by means of a sigma-delta modulator (1), wherein the bit stream is produced with a constant modulator cycle time, producing temporally successive digital sampled values (S_1 to S_r) during an associated period duration by filtering the bit stream (BS) by means of a number of digital filters (2_1 to 2_r), wherein time intervals between the temporally successive digital sampled values are multiples of the modulator cycle time, the digital filters (2_1 to 2_r) are started at time offsets from each other in the time intervals of the multiples of the modulator cycle time, and each digital filter (2_1 to 2_r) outputs an associated digital sampled value (S_1 to S_r), and calculating a mean of the digital sampled values (S_1 to S_r) produced during the associated period duration, wherein the mean forms the value of the digital signal (DS) for the associated period duration.