-
公开(公告)号：US08705598B2
公开(公告)日：2014-04-22
申请号：US13326735
申请日：2011-12-15
IPC分类号： H04B3/46
CPC分类号： G01R13/0254 , G01R13/029 , G01R29/26
摘要： A test and measurement instrument includes an input for receiving an input test signal and a separator that separates a data array of the input test signal into a number of different data bins. Each data bin includes a number of data points. A selector is included that determines whether the data points within a present bin of the total bins represent signal or noise. When the present bin contains noise, a processor generates a first output for the present bin. Instead, when the present bin contains signal, the processor generates a second output for the present bin. The bin outputs can then be combined to make an output array, such as a waveform display, for the instrument.
摘要翻译： 测试和测量仪器包括用于接收输入测试信号的输入端和将输入测试信号的数据阵列分离成多个不同数据箱的分离器。 每个数据箱包括多个数据点。 包括一个选择器，用于确定总机箱当前二进制位内的数据点是否表示信号或噪声。 当本仓包含噪声时，处理器产生用于本仓的第一输出。 相反，当本bin包含信号时，处理器为当前bin生成第二个输出。 然后可以将纸盒输出组合起来，为仪器制作输出阵列，如波形显示。
-
公开(公告)号：US08649989B2
公开(公告)日：2014-02-11
申请号：US12856472
申请日：2010-08-13
IPC分类号： G01R23/16
CPC分类号： G01R13/0254 , G01R23/16
摘要： Embodiments of this invention provide enhanced triggering capabilities such as frequency and phase triggering in a test and measurement instrument, such as a Real-Time Spectrum Analyzer (RTSA) or oscilloscope. A test and measurement instrument can include input terminals to receive RF signals, an ADC to digitize the RF signals, a digital downconverter to produce I and Q baseband component information, and a power detector to determine a power level using the I and Q information. A comparator compares the power level received from the power detector with a user-definable power threshold, and produces a logic signal for enabling one or more phase or frequency demodulators. The one or more demodulators produce IQ-based time-domain traces derived from the I and Q component information when the power level determined by the power detector exceeds the power threshold. Trigger circuitry is configured to trigger on an event responsive to a delayed trigger enable signal.
摘要翻译： 本发明的实施例提供了诸如实时频谱分析仪（RTSA）或示波器之类的测试和测量仪器中的增强的触发能力，例如频率和相位触发。 测试和测量仪器可以包括用于接收RF信号的输入端子，用于数字化RF信号的ADC，用于产生I和Q基带分量信息的数字下变频器，以及使用I和Q信息来确定功率电平的功率检测器。 比较器将从功率检测器接收的功率电平与用户可定义的功率阈值进行比较，并产生用于启用一个或多个相位或频率解调器的逻辑信号。 当由功率检测器确定的功率电平超过功率阈值时，一个或多个解调器产生从I和Q分量信息导出的基于IQ的时域轨迹。 触发电路被配置为在响应于延迟的触发使能信号的事件上触发。
-
3.发明申请Frequency response correction for a receiver having a frequency translation device 有权具有频率转换装置的接收机的频率响应校正公开(公告)号：US20080096489A1
公开(公告)日：2008-04-24
申请号：US11583200
申请日：2006-10-18
申请人： Yi He , Marcus K. Da Silva
发明人： Yi He , Marcus K. Da Silva
IPC分类号： H04B1/40
摘要： A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a wide frequency range for multiple center frequencies. The calibration data are based upon a multi-dimensional model for the frequency translation device that includes at least center frequency and offset frequency. The calibration data are stored in the RF receiver during factory calibration. A run-time normalization of the RF receiver produces a normalization frequency response at a reference frequency, and a relative frequency response at a desired center frequency is derived from the calibration data. The normalized and relative frequency responses are combined to produce an overall frequency response that is used by the RF receiver to configure an inverse filter to correct channel linear distortion produced by the frequency response of the frequency translation device at the desired center frequency.
摘要翻译： 校正具有频率转换装置和固定IF频率部分的RF接收机的频率响应的方法使用表示针对多个中心频率的宽频率范围的频率响应的校准数据。 校准数据基于用于频率转换装置的多维模型，其包括至少中心频率和偏移频率。 校准数据在工厂校准期间存储在RF接收机中。 RF接收机的运行时间归一化在参考频率处产生归一化频率响应，并且从校准数据导出期望中心频率处的相对频率响应。 归一化和相对频率响应被组合以产生由RF接收机使用的整体频率响应，以配置反向滤波器以校正由期望中心频率处的频率转换装置的频率响应产生的信道线性失真。
-
4.发明授权公开(公告)号：US07720137B2
公开(公告)日：2010-05-18
申请号：US11583188
申请日：2006-10-18
申请人： Yi He , Marcus K. Da Silva
发明人： Yi He , Marcus K. Da Silva
IPC分类号： H04B17/00
CPC分类号： G01R31/2839 , G01R27/28 , G01R31/2822
摘要： A method of characterizing the frequency response of a frequency translation device over a wide IF bandwidth is based on a two-dimensional model to generate calibration data for a device at run-time. The model is a function of a center frequency and frequency offset for a plurality of center frequencies over a wide system bandwidth to produce a frequency response at each center frequency. The frequency responses at each center frequency are scaled and normalized relative to a reference frequency and stored.
摘要翻译： 在宽IF带宽上表征频率转换设备的频率响应的方法基于二维模型，以在运行时产生设备的校准数据。 该模型是在宽系统带宽上的多个中心频率的中心频率和频率偏移的函数，以在每个中心频率处产生频率响应。 在每个中心频率处的频率响应相对于参考频率被缩放和归一化并被存储。
-
公开(公告)号：US08675719B2
公开(公告)日：2014-03-18
申请号：US12892758
申请日：2010-09-28
IPC分类号： H04B17/00
CPC分类号： H04B17/16 , G01R13/0236 , G01R13/0272 , G01R23/16
摘要： A test and measurement instrument including a time domain channel configured to process a first input signal for analysis in a time domain; a frequency domain channel configured to process a second input signal for analysis in a frequency domain; and an acquisition system coupled to the time domain channel and the frequency domain channel. The acquisition system is configured to acquire data from the time domain channel and the frequency domain channel. Time domain and frequency domain data can be time aligned.
摘要翻译： 一种测试和测量仪器，包括被配置为处理第一输入信号以在时域中进行分析的时域通道; 频域信道，被配置为处理第二输入信号以在频域中进行分析; 以及耦合到时域信道和频域信道的采集系统。 采集系统被配置为从时域信道和频域信道获取数据。 时域和频域数据可以进行时间对齐。
-
6.发明授权Frequency response correction for a receiver having a frequency translation device 有权具有频率转换装置的接收机的频率响应校正公开(公告)号：US08055226B2
公开(公告)日：2011-11-08
申请号：US11583200
申请日：2006-10-18
申请人： Yi He , Marcus K. Da Silva
发明人： Yi He , Marcus K. Da Silva
IPC分类号： H04B11/00
摘要： A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a wide frequency range for multiple center frequencies. The calibration data are based upon a multi-dimensional model for the frequency translation device that includes at least center frequency and offset frequency. The calibration data are stored in the RF receiver during factory calibration. A run-time normalization of the RF receiver produces a normalization frequency response at a reference frequency, and a relative frequency response at a desired center frequency is derived from the calibration data. The normalized and relative frequency responses are combined to produce an overall frequency response that is used by the RF receiver to configure an inverse filter to correct channel linear distortion produced by the frequency response of the frequency translation device at the desired center frequency.
摘要翻译： 校正具有频率转换装置和固定IF频率部分的RF接收机的频率响应的方法使用表示针对多个中心频率的宽频率范围的频率响应的校准数据。 校准数据基于用于频率转换装置的多维模型，其包括至少中心频率和偏移频率。 校准数据在工厂校准期间存储在RF接收机中。 RF接收机的运行时间归一化在参考频率处产生归一化频率响应，并且从校准数据导出期望中心频率处的相对频率响应。 归一化和相对频率响应被组合以产生由RF接收机使用的整体频率响应，以配置反向滤波器以校正由期望中心频率处的频率转换装置的频率响应产生的信道线性失真。
-
7.发明申请公开(公告)号：US20080095271A1
公开(公告)日：2008-04-24
申请号：US11583188
申请日：2006-10-18
申请人： Yi He , Marcus K. Da Silva
发明人： Yi He , Marcus K. Da Silva
IPC分类号： H04L27/00
CPC分类号： G01R31/2839 , G01R27/28 , G01R31/2822
摘要： A method of characterizing the frequency response of a frequency translation device over a wide IF bandwidth is based on a two-dimensional model to generate calibration data for a device at run-time. The model is a function of a center frequency and frequency offset for a plurality of center frequencies over a wide system bandwidth to produce a frequency response at each center frequency. The frequency responses at each center frequency are scaled and normalized relative to a reference frequency and stored.
摘要翻译： 在宽IF带宽上表征频率转换设备的频率响应的方法基于二维模型，以在运行时产生设备的校准数据。 该模型是在宽系统带宽上的多个中心频率的中心频率和频率偏移的函数，以在每个中心频率处产生频率响应。 在每个中心频率处的频率响应相对于参考频率被缩放和归一化并被存储。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.018 秒)
