-
公开(公告)号：US06462704B2
公开(公告)日：2002-10-08
申请号：US09773810
申请日：2001-01-31
申请人： Leonard Rexberg , Bernt Johansson
发明人： Leonard Rexberg , Bernt Johansson
IPC分类号： G01S740
CPC分类号： H01Q3/267 , G01S7/4017
摘要： A method and a system for an array antenna calibration are disclosed. The method and system provide a sensor system presenting a sensor device at each antenna element, which sensor devices include digital receivers. Each digital receiver produces a complex base-band I/Q-signal. The outputs of the digital receivers are fed to a Digital Signal Processing device for adding them up to obtain a resulting signal which when converted to a DC signal presents a maximum if all individual signals have the same phase. The search for a maximum of this DC voltage is then used by the Digital Signal Processor for creating source signal phase control signals. By adjusting source signal phases for obtaining maximum added DC voltage derived from the sensor system the phases at the antenna elements will be calibrated. In this manner an adaptive array antenna is simply calibrated even during operation by compensating the base-band I/Q-signals for the intentional phase settings used for achieving a specific channel adaptive array antenna direction.
摘要翻译： 公开了一种用于阵列天线校准的方法和系统。 该方法和系统提供在每个天线元件处呈现传感器装置的传感器系统，哪些传感器装置包括数字接收器。 每个数字接收机产生复杂的基带I / Q信号。 数字接收机的输出被馈送到数字信号处理装置，用于将它们相加以获得结果信号，当转换成DC信号时，如果所有单独的信号具有相同的相位则呈现最大值。 搜索该直流电压的最大值然后由数字信号处理器用于创建源信号相位控制信号。 通过调整源信号相位以获得从传感器系统导出的最大附加DC电压，天线元件上的相位将被校准。 以这种方式，即使在操作期间，通过补偿用于实现特定信道自适应阵列天线方向的有意相位设置的基带I / Q信号也可简单校准自适应阵列天线。
-
公开(公告)号：US20140016682A1
公开(公告)日：2014-01-16
申请号：US14009369
申请日：2011-04-11
申请人： Leonard Rexberg , Bernt Johansson
发明人： Leonard Rexberg , Bernt Johansson
IPC分类号： H04B1/40
摘要： A radio module is disclosed that includes a baseband device, a layer device, and a multi radio antenna. The baseband device is arranged to perform digital modulation and/or demodulation. The baseband device provides a data connection available to a digital system using the radio module for radio communication. The multi radio antenna includes an analogue radio device arranged to perform analogue signal processing, and an antenna array connected to the analogue radio device. The layer device is arranged to map each baseband device to one or more of the at least one multi radio antennas, and the radio module is connectable to a second equivalent radio module. A corresponding radio assembly and method are also disclosed.
摘要翻译： 公开了一种无线电模块，其包括基带设备，层设备和多无线电天线。 基带设备被配置为执行数字调制和/或解调。 基带设备使用无线电模块为数字系统提供可用于无线电通信的数据连接。 多无线电天线包括被配置为执行模拟信号处理的模拟无线电设备和连接到模拟无线电设备的天线阵列。 层设备被布置成将每个基带设备映射到至少一个多无线电天线中的一个或多个，并且无线电模块可连接到第二等效无线电模块。 还公开了相应的无线电组件和方法。
-
公开(公告)号：US09362973B2
公开(公告)日：2016-06-07
申请号：US14009369
申请日：2011-04-11
申请人： Leonard Rexberg , Bernt Johansson
发明人： Leonard Rexberg , Bernt Johansson
摘要： A radio module is disclosed that includes a baseband device, a layer device, and a multi radio antenna. The baseband device is arranged to perform digital modulation and/or demodulation. The baseband device provides a data connection available to a digital system using the radio module for radio communication. The multi radio antenna includes an analog radio device arranged to perform analog signal processing, and an antenna array connected to the analog radio device. The layer device is arranged to map each baseband device to one or more of the at least one multi radio antennas, and the radio module is connectable to a second equivalent radio module. A corresponding radio assembly and method are also disclosed.
摘要翻译： 公开了一种无线电模块，其包括基带设备，层设备和多无线电天线。 基带设备被配置为执行数字调制和/或解调。 基带设备使用无线电模块为数字系统提供可用于无线电通信的数据连接。 多无线电天线包括被配置为执行模拟信号处理的模拟无线电设备和连接到模拟无线电设备的天线阵列。 层设备被布置成将每个基带设备映射到至少一个多无线电天线中的一个或多个，并且无线电模块可连接到第二等效无线电模块。 还公开了相应的无线电组件和方法。
-
公开(公告)号：US07505530B2
公开(公告)日：2009-03-17
申请号：US10480835
申请日：2002-05-05
申请人： Leonard Rexberg , Bernt Johansson
发明人： Leonard Rexberg , Bernt Johansson
IPC分类号： H04L1/02
CPC分类号： H03F1/3241
摘要： An output signal from an inherently non-linear device is linearized by sampling an original signal with a first sampling rate for a desired signal resolution of an achieved digital original signal message; and re-sampling the original signal at a second sampling rate for creating a digital pre-distortion signal to be added to the achieved digital original signal message. The second sampling rate is greater than the first sampling rate, thereby forming a digital pre-distorted signal to be fed to the inherently non-linear device after digital to analog conversion.
摘要翻译： 通过以实现的数字原始信号消息的期望信号分辨率的第一采样率采样原始信号来线性化来自固有非线性设备的输出信号; 并以第二采样率重新采样原始信号，以产生要添加到所获得的数字原始信号消息的数字预失真信号。 第二采样率大于第一采样率，从而在数模转换之后形成要馈送到固有非线性器件的数字预失真信号。
-
公开(公告)号：US06975688B2
公开(公告)日：2005-12-13
申请号：US09947054
申请日：2001-09-05
申请人： Leonard Rexberg , Bernt Johansson
发明人： Leonard Rexberg , Bernt Johansson
CPC分类号： H03F1/3258 , H03F1/3247 , H04L5/06
摘要： A method is disclosed for obtaining high throughput linearity using a pre-distorter in front of a RF power amplifier, for instance a multi-carrier power amplifier (MCPA) for a communications system. The method can be carried out off-line to thereby save costs and components otherwise needed for a common on-line feed back. In a first step calibration is performed by measuring by an off-line spectrum analysis an output spectrum of the power amplifier and simultaneously applying a known input signal. As a next step digitized parameters characterizing the power amplifier are calculated in the frequency domain by comparing spectrum points between input spectrum and output spectrum. Thereafter calculated and weighted digitized parameters are transferred to a pre-distorting device. In a third step the known signal spectrum is transferred to the pre-distorting device feeding its output signal together with the original known signal spectrum to the power amplifier input thereby compensating for power amplifier non-linearity and minimizing inter-modulation products. Finally in a fourth step an uncompensated known input spectrum is compared with a corresponding compensated output spectrum of the power amplifier and the steps of calibration calculation are repeated until a best optimization input signal to the power amplifier regarding the inter-modulation products of the output signal has been achieved.
摘要翻译： 公开了一种使用在RF功率放大器（例如用于通信系统的多载波功率放大器（MCPA））前面的预失真器获得高吞吐量线性度的方法。 该方法可以离线进行，从而节省常规在线反馈所需的成本和组件。 在第一步中，通过离线频谱分析测量功率放大器的输出频谱并同时施加已知的输入信号来执行校准。 作为下一步，通过比较输入频谱和输出频谱之间的频谱点，在频域中计算表征功率放大器的数字化参数。 此后计算和加权的数字化参数被传送到预失真设备。 在第三步骤中，将已知信号频谱传送到预失真装置，将其输出信号与原始已知信号频谱一起馈送到功率放大器输入，由此补偿功率放大器的非线性并最小化互调产物。 最后，在第四步骤中，将未补偿的已知输入频谱与功率放大器的对应的补偿输出频谱进行比较，并重复校准计算步骤，直到关于功率放大器关于输出信号的互调产物的最佳优化输入信号 已经实现。
-
公开(公告)号：US06850114B2
公开(公告)日：2005-02-01
申请号：US10450032
申请日：2001-11-28
CPC分类号： H03F1/3258 , H03F1/3247
摘要： A method and an arrangement is disclosed for linearizing the output signal from an inherently non-linear device, e.g. an amplifier, producing intermodulation or non-linear products. A pre-distorter having a unity transfer function is located between a signal input and the input of the inherently non-linear device. Furthermore a second device forming a post-distorter is coupled to the output of the nonlinear device in a way to be able to handle the amplified output signal or a portion of the output signal. According to the present method the post-distorter is optimized to give as output the same signal spectrum content as what is input to the non-linear device, whereafter the achieved parameters of the post-distorter are transferred to the pre-distorter. In other words a copy of the optimized post-distorter is then used as a pre-distorter in front of the non-linear device to obtain an improved output signal in terms of signal quality from the inherently non-linear device. The post-distorter is then optimized once more and parameters are again transferred to the pre-distorter as a further as a further small correction. In operation this is then generally repeated in a suitable scheduled way to give an ongoing correction to the pre-distortion. The pre-distorter and post-distorter may both be either digital devices or analog devices.
摘要翻译： 公开了一种用于线性化来自固有非线性装置的输出信号的方法和装置，例如， 一个放大器，产生互调或非线性产品。 具有单位传递函数的预失真器位于信号输入和固有非线性设备的输入之间。 此外，形成后变压器的第二装置以能够处理放大的输出信号或输出信号的一部分的方式耦合到非线性装置的输出端。 根据本方法，后变形器被优化以给出输出与输入到非线性装置的信号频谱内容相同的信号频谱内容，然后将后失真器的实现参数传送到预失真器。 换句话说，优化的后变压器的副本然后被用作非线性装置前的预失真器，以获得来自固有的非线性装置的信号质量的改进的输出信号。 然后再次优化后变形器，并将参数再次转移到预失真器作为进一步的小的校正。 在操作中，然后通常以适当的调度方式重复以给出对失真的持续校正。 预失真器和后置失真器可以是数字设备或模拟设备。
-
公开(公告)号：US20120139776A1
公开(公告)日：2012-06-07
申请号：US12957949
申请日：2010-12-01
申请人： Håkan Malmqvist , Leonard Rexberg
发明人： Håkan Malmqvist , Leonard Rexberg
IPC分类号： G01S7/40
CPC分类号： G01S7/4026 , G01S7/4017 , H01Q1/521 , H01Q3/267 , H01Q21/28
摘要： Embodiments herein include a method for obtaining a calibration parameter for an antenna array. The antenna array comprises a first and a second radio module with respective associated antennas, wherein both radio modules comprise a main transmitter and a connected calibration receiver or both radio modules comprise a main receiver and a connected calibration transmitter. The method comprises: injecting a first calibration signal in the first radio module and measuring a first response to the first calibration in the first radio module. This injecting and measuring is repeated for all combinations of the first and second radio modules. Finally, a numerical value is calculated using the responses; a calibration parameter is calculated based on the calculated numerical value. Embodiments herein also include a corresponding antenna array, computer program and computer program product.
摘要翻译： 本文的实施例包括用于获得天线阵列的校准参数的方法。 天线阵列包括具有各自的相关天线的第一和第二无线电模块，其中两个无线电模块包括主发射机和连接的校准接收机，或者两个无线电模块包括主接收机和连接的校准发射机。 该方法包括：在第一无线电模块中注入第一校准信号，并测量第一无线电模块中对第一校准的第一响应。 针对第一和第二无线电模块的所有组合重复该注入和测量。 最后，使用响应计算数值; 基于计算出的数值计算校准参数。 本文的实施例还包括相应的天线阵列，计算机程序和计算机程序产品。
-
公开(公告)号：US20110148518A1
公开(公告)日：2011-06-23
申请号：US12447865
申请日：2006-11-01
申请人： Thomas Lejon , Leonard Rexberg
发明人： Thomas Lejon , Leonard Rexberg
IPC分类号： H03F3/68
CPC分类号： H03G3/3042 , H03F1/0205 , H03F1/0266 , H03F1/0294 , H03F1/3294 , H03F3/19 , H03F3/24 , H03F2200/102 , H03F2200/252 , H03F2200/336
摘要： The present invention relates to methods and devices to control and operate the functionality of a power amplifier system (100) capable of operating in at least three differential amplification modes. The drive signal's amplitude envelope controls an integrated switch network (104; 105, 106) that routes both the signal envelope and signal phase to different modulation blocks (111, 112: 109, 110: 115). Depending on the envelope strength, the operational mode of the amplifier system is possible to alter to best serve the signal statistics to provide the highest overall power efficiency.
摘要翻译： 本发明涉及用于控制和操作能够以至少三种差分放大模式工作的功率放大器系统（100）的功能的方法和装置。 驱动信号的幅度包络控制将信号包络和信号相位两者都传送到不同的调制块（111,112,109,110：115）的集成交换网络（104; 105,106）。 取决于包络强度，放大器系统的工作模式可以改变，以最佳地提供信号统计信息，以提供最高的整体功率效率。
-
公开(公告)号：US07924942B2
公开(公告)日：2011-04-12
申请号：US10560346
申请日：2003-06-18
申请人： Leonard Rexberg
发明人： Leonard Rexberg
CPC分类号： H03F1/3247 , H03F1/3252 , H03F1/3294 , H03F2201/3209
摘要： A power amplifier pre-distorter is formed by a FIR filter structure which includes an individual look-up table for each filter tap, where each look-up table represents a sampled polynomial in a variable representing signal amplitude, and means for selecting, from each filter tap look-up table, a filter coefficient that depends on the amplitude of a corresponding complex signal value to be multiplied by the filter tap. A training method for such a pre-distorter determines (S1) a first estimate of a first look-up table assigned to a first filter tap, assuming a second look-up table assigned to a second filter tap is set to predetermined table values. Thereafter the method determines (S2) a second estimate of the second look-up table, assuming the first look-up table is set to the determined first estimate. If deemed necessary, the method includes the further steps (a) refining (S3) the first estimate refined, assuming the second look-up table is set to the latest determined second estimate, and (b) refining (S4) the second estimate, assuming the first look-up table is set to the latest determined first estimate. Steps (a) and (b) may be repeated (S5) until convergence is reached.
摘要翻译： 功率放大器预失真器由FIR滤波器结构形成，其包括用于每个滤波器抽头的单独查找表，其中每个查找表表示代表信号幅度的变量中的采样多项式，以及用于从每个 滤波器抽头查找表，取决于要乘以滤波器抽头的相应复信号值的幅度的滤波器系数。 这种预失真器的训练方法确定（S1）分配给第一滤波器抽头的第一查找表的第一估计，假设分配给第二滤波器抽头的第二查找表被设置为预定表值。 此后，假设将第一查找表设置为所确定的第一估计，该方法确定（S2）第二查找表的第二估计。 如果认为有必要，该方法还包括以下步骤：（a）将第二估计值设置为最新确定的第二估计值，并且（b）精化（S4）第二估计值， 假设第一查询表被设置为最新确定的第一估计。 可以重复步骤（a）和（b）（S5），直到达到收敛。
-
公开(公告)号：US07268620B2
公开(公告)日：2007-09-11
申请号：US10508314
申请日：2003-03-14
申请人： Thorsten Nygren , Leonard Rexberg
发明人： Thorsten Nygren , Leonard Rexberg
IPC分类号： H03F1/26
CPC分类号： H03F1/3241
摘要： New technology is described to calculate and optimize a pre-distorter avoiding the need of time-alignment between input and output of the amplifier. An analog output spectrum is used to compute an optimum pre-distorter, either in digital or analog format. The output spectrum is used to optimize intermodulation performance rather than trying to match the input spectrum to the output spectrum. The output spectrum (except for a possible gain constant) can be used as input to the optimization procedure. Since the intermodulation products usually are of much lower amplitude than the carriers themselves, it can be taken as the input spectrum without major loss of confinement. Mathematical procedures to calculate a pre-distorter using only the output signal are outlined.
摘要翻译： 描述了新技术来计算和优化预失真器，避免了放大器的输入和输出之间的时间对准。 模拟输出频谱用于计算数字或模拟格式的最佳预失真器。 输出光谱用于优化互调性能，而不是尝试将输入光谱与输出光谱相匹配。 输出频谱（可能的增益常数除外）可用作优化过程的输入。 由于互调产物的幅度通常低于载波本身的幅度要低得多，所以它可以作为输入频谱，而没有大的限制损失。 概述了仅使用输出信号计算预失真器的数学程序。
-
-
-
-
-
-
-
-
-
搜索结果
27 条记录 (耗时 0.016 秒)
