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1. 发明授权

US08995506B2 Transceiver with sub-sampling based frequency synthesizer 有权
标题翻译：收发器采用基于子采样的频率合成器
公开(公告)号：US08995506B2
公开(公告)日：2015-03-31
申请号：US13977299
申请日：2010-12-31
申请人： Anton Willem Roodnat , Hans Van Driest , Jan Hendrik Haanstra
发明人： Anton Willem Roodnat , Hans Van Driest , Jan Hendrik Haanstra
IPC分类号： H03B21/00 , H03L7/16
CPC分类号： H03B21/00 , H03L7/16 , H03L2207/12 , H04B1/40 , H04B1/408
摘要： Disclosed is a transceiver including a sub-sampling based frequency synthesizer with a sampling frequency fsmp, configured to generate M different output signals 3 for use as a carrier signal for transmission and/or a signal with a channel frequency for reception. M is an integer greater than 4, each output signal has a corresponding predefined frequency. The predefined frequencies are within a frequency band with a predefined bandwidth CFR. CFR is greater than fsmp. The frequency synthesizer includes a frequency shift unit configured for shifting a version of the output signal over a predefined frequency shift fshift to obtain a frequency shifted signal which is supplied to a sampling unit of the sub-sampling based frequency synthesizer, wherein −fsmp/2≦fshift≦+fsmp/2. The frequency shift unit is configured to use for the generation of each of the N different output signals a corresponding predefined frequency shift fshift.
摘要翻译：公开了一种收发器，其包括具有采样频率fsmp的基于子采样的频率合成器，被配置为产生用于传输的载波信号的M个不同的输出信号和/或具有用于接收的信道频率的信号。 M是大于4的整数，每个输出信号具有相应的预定频率。预定义的频率在具有预定带宽CFR的频带内。 CFR大于fsmp。所述频率合成器包括：频移单元，被配置为在预定义的频移频率上移位输出信号的版本，以获得提供给基于子采样的频率合成器的采样单元的频移信号，其中-fsmp / 2＆nlE ; fshift＆nlE; + fsmp / 2。频移单元被配置为用于产生相应的预定频移位移的N个不同输出信号中的每一个。

2. 发明申请

US20130005276A1 TRANSCEIVER 有权
标题翻译：收发器
公开(公告)号：US20130005276A1
公开(公告)日：2013-01-03
申请号：US13636350
申请日：2010-03-24
申请人： Hans Van Driest
发明人： Hans Van Driest
IPC分类号： H04B1/40
CPC分类号： H03L7/06 , H03L7/091
摘要： A transceiver 1 includes a frequency synthesizer 2 configured to generate an output signal 3 for use as a carrier signal for transmission and/or a signal with a channel frequency for reception, wherein the frequency synthesizer is a sub-sampling based frequency locked loop frequency synthesizer. The combination of a FLL and sub-sampling allows to obtain a sub-sample based locked loop with a closed loop response similar to a PLL but with improved settling time and improved suppression of high frequency components of the quantization noise due to the sampling process. The transceiver allows to obtain a frequency synthesizer with improved characteristics with respect to at least one of power consumption, locking characteristic, design optimization characteristics compared to non-sub-sampling PLL based frequency synthesizers.
摘要翻译：收发器1包括频率合成器2，其被配置为产生用作传输的载波信号的输出信号3和/或具有用于接收的信道频率的信号，其中频率合成器是基于子采样的频率锁频环频率合成器。 FLL和子采样的组合允许获得类似于PLL的闭环响应的基于子采样的锁定环路，但是由于采样过程，具有改善的建立时间和改进的对量化噪声的高频分量的抑制。相对于基于非子采样PLL的频率合成器，收发器允许获得关于功耗，锁定特性，设计优化特性中的至少一个的改进特性的频率合成器。

3. 发明授权

US06314145B1 Tracking carrier timing 有权
标题翻译：跟踪载波定时
公开(公告)号：US06314145B1
公开(公告)日：2001-11-06
申请号：US09168145
申请日：1998-10-07
申请人： Hans van Driest
发明人： Hans van Driest
IPC分类号： H04L2714
CPC分类号： H04L27/2332 , H03J7/04 , H04L7/0029 , H04L2027/003 , H04L2027/0046
摘要： The timing of a carrier signal is tracked in a receiver. The receiver receives a signal produced by a transmitter having a single frequency source which is used to generate a reference clock frequency and a carrier signal frequency, there being a fixed, predetermined relationship between the reference and carrier frequencies. In the receiver there is a single frequency source which is used to generate a reference clock frequency and a carrier reference signal frequency, there being a fixed, predetermined relationship between the reference and carrier reference frequencies. The fixed, predetermined relationship in the transmitter and the receiver is the same.
摘要翻译：载波信号的定时在接收机中被跟踪。接收机接收由具有单个频率源的发射机产生的信号，该单个频率源用于产生参考时钟频率和载波信号频率，在参考频率和载波频率之间存在固定的预定关系。在接收机中，存在用于产生参考时钟频率和载波参考信号频率的单个频率源，在参考和载波参考频率之间存在固定的预定关系。发射机和接收机中固定的预定关系是相同的。

4. 发明申请

US20140036970A1 TRANSCEIVER WITH SUB - SAMPLING BASED FREQUENCY SYNTHESIZER 有权
标题翻译：收发器与基于采样的频率合成器
公开(公告)号：US20140036970A1
公开(公告)日：2014-02-06
申请号：US13977299
申请日：2010-12-31
申请人： Anton Willem Roodnat , Hans Van Driest , Jan Hendrik Haanstra
发明人： Anton Willem Roodnat , Hans Van Driest , Jan Hendrik Haanstra
IPC分类号： H03B21/00
CPC分类号： H03B21/00 , H03L7/16 , H03L2207/12 , H04B1/40 , H04B1/408
摘要： Disclosed is a transceiver including a sub-sampling based frequency synthesizer with a sampling frequency fsmp, configured to generate M different output signals 3 for use as a carrier signal for transmission and/or a signal with a channel frequency for reception. M is an integer greater than 4, each output signal has a corresponding predefined frequency. The predefined frequencies are within a frequency band with a predefined bandwidth CFR. CFR is greater than fsmp. The frequency synthesizer includes a frequency shift unit configured for shifting a version of the output signal over a predefined frequency shift fshift to obtain a frequency shifted signal which is supplied to a sampling unit of the sub-sampling based frequency synthesizer, wherein −fsmp/2≦fshift≦+fsmp/2. The frequency shift unit is configured to use for the generation of each of the N different output signals a corresponding predefined frequency shift fshift.
摘要翻译：公开了一种收发器，其包括具有采样频率fsmp的基于子采样的频率合成器，被配置为产生用于传输的载波信号的M个不同的输出信号和/或具有用于接收的信道频率的信号。 M是大于4的整数，每个输出信号具有相应的预定频率。预定义的频率在具有预定带宽CFR的频带内。 CFR大于fsmp。频率合成器包括：频移单元，被配置为在预定义的频率移位上移位输出信号的版本，以获得提供给基于子采样的频率合成器的采样单元的频移信号，其中-fsmp / 2 @ fshift @ + fsmp / 2。频移单元被配置为用于产生相应的预定频移位移的N个不同输出信号中的每一个。

5. 发明授权

US08531981B2 Arrangement for determining a characteristic form of an input signal 有权
标题翻译：用于确定输入信号的特征形式的布置
公开(公告)号：US08531981B2
公开(公告)日：2013-09-10
申请号：US12863395
申请日：2008-01-25
申请人： Hans Van Driest , Wessel Harm Lubberhuizen
发明人： Hans Van Driest , Wessel Harm Lubberhuizen
IPC分类号： H04J1/16 , H04L7/00
CPC分类号： H04B1/7075 , H04L7/042 , H04L2027/0028 , H04L2027/0034 , H04L2027/0095
摘要： A receiver and method for determining a characteristic from an input signal is disclosed. A characteristic is at least one selected from a group comprising preamble detect, frequency offset and timing offset. The input signal comprises an IF frequency fIF and a preamble signal which is a sequence of M similar data symbols. The data symbols have a symbol period SP, and M is an integer greater than or equal to 2. The method comprises: —receiving N subsequent samples of the input signal, the N subsequent samples representing a part of the input signal approximating the symbol period SP, —rotating N subsequent samples to obtain N rotated symbols; —correlating the N rotated symbols with P correlation functions to generate a set of N×P correlation values, P being an integer greater than or equal to 2; and, —selecting a maximum correlation value from the set of N×P correlation values and determining the characteristic. The invention enables to perform an efficient antenna diversity circuit, which can be used for simultaneously timing offset and frequency offset estimation, and preamble detection for both antennae with only one radio unit.
摘要翻译：公开了一种用于从输入信号确定特性的接收机和方法。特征是从包括前导码检测，频率偏移和定时偏移的组中选择的至少一个。输入信号包括IF频率fIF和作为M个相似数据符号的序列的前导码信号。数据符号具有符号周期SP，M是大于或等于2的整数。该方法包括： - 接收输入信号的N个后续采样，N个后续采样表示接近符号周期的输入信号的一部分 SP，旋转N个后续样本以获得N个旋转符号; 将N个旋转的符号与P相关函数相关，以产生一组N×P相关值，P是大于或等于2的整数; 并且从所述一组N×P相关值中选择最大相关值并确定所述特性。本发明能够执行有效的天线分集电路，其可以用于同时定时偏移和频率偏移估计以及仅具有一个无线电单元的两个天线的前导码检测。

6. 发明申请

US20110051612A1 ARRANGEMENT FOR DETERMINING A CHARACTERISTIC FORM OF AN INPUT SIGNAL 有权
标题翻译：用于确定输入信号特征形式的布置
公开(公告)号：US20110051612A1
公开(公告)日：2011-03-03
申请号：US12863395
申请日：2008-01-25
申请人： Hans Van Driest , Wessel Harm Lubberhuizen
发明人： Hans Van Driest , Wessel Harm Lubberhuizen
IPC分类号： H04L12/26
CPC分类号： H04B1/7075 , H04L7/042 , H04L2027/0028 , H04L2027/0034 , H04L2027/0095
摘要： A receiver and method for determining a characteristic from an input signal is disclosed. A characteristic is at least one selected from a group comprising preamble detect, frequency offset and timing offset. The input signal comprises an IF frequency fIF and a preamble signal which is a sequence of M similar data symbols. The data symbols have a symbol period SP, and M is an integer greater than or equal to 2. The method comprises: -receiving N subsequent samples of the input signal, the N subsequent samples representing a part of the input signal approximating the symbol period SP, -rotating N subsequent samples to obtain N rotated symbols; -correlating the N rotated symbols with P correlation functions to generate a set of N×P correlation values, P being an integer greater than or equal to 2; and, -selecting a maximum correlation value from the set of N×P correlation values and determining the characteristic. The invention enables to perform an efficient antenna diversity circuit, which can be used for simultaneously timing offset and frequency offset estimation, and preamble detection for both antennae with only one radio unit.
摘要翻译：公开了一种用于从输入信号确定特性的接收机和方法。特征是从包括前导码检测，频率偏移和定时偏移的组中选择的至少一个。输入信号包括IF频率fIF和作为M个相似数据符号的序列的前导码信号。数据符号具有符号周期SP，M是大于或等于2的整数。该方法包括： - 接收输入信号的N个后续采样，N个后续采样表示接近符号周期的输入信号的一部分 SP，旋转N个后续样本以获得N个旋转符号; 将N个旋转的符号与P相关函数相关，以产生一组N×P相关值，P是大于或等于2的整数; 并且从所述一组N×P相关值中选择最大相关值并确定所述特性。本发明能够执行有效的天线分集电路，其可以用于同时定时偏移和频率偏移估计以及仅具有一个无线电单元的两个天线的前导码检测。

7. 发明授权

US07010058B2 Wireless local area network apparatus 失效
公开(公告)号：US07010058B2
公开(公告)日：2006-03-07
申请号：US10681267
申请日：2003-10-09
申请人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
发明人： Wilhelmus J. M. Diepstraten , Hendrik van Bokhorst , Hans van Driest
IPC分类号： H04L27/04 , H04L7/00
CPC分类号： H04W52/0216 , H04L7/04 , H04L27/04 , H04W56/009 , H04W76/27 , H04W84/12 , H04W88/02 , H04W88/022 , Y02D70/142
摘要： A wireless local area network apparatus includes a transmitter and a receiver in which operation of the receiver is accurately synchronized with periodic signals from the transmitter. The periodic signals contain timing data indicating the state of a timer in the transmitter at the time the signal containing that data was transmitted and this timing data is retrieved from the signal when received by the receiver and loaded in a timer for controlling operation of the receiver.

8. 发明授权

US5917865A Digital automatic gain control employing two-stage gain-determination process 失效
标题翻译：采用两级增益确定过程的数字自动增益控制
公开(公告)号：US5917865A
公开(公告)日：1999-06-29
申请号：US777654
申请日：1996-12-31
申请人： Robert John Kopmeiners , Hans van Driest
发明人： Robert John Kopmeiners , Hans van Driest
IPC分类号： H03G3/00 , H03G3/30 , H04B1/16 , H03L5/00
CPC分类号： H03G3/3052 , H03G3/001
摘要： For use in an automatic gain control that receives a digital signal from a digital circuit having a given dynamic range and develops therefrom a gain signal to be applied to a variable gain amplifier, an analyzing circuit for, and method of, determining a magnitude of the gain signal. The analyzing circuit includes: (1) a peak sampling subcircuit that determines an average peak value of the digital signal over variable periods of time and (2) a gain signal adjustment subcircuit, coupled to the peak sampling subcircuit, that operates in a selected one of: (a) a search mode in which the gain signal adjustment subcircuit decreases the periods of time and adjusts the gain signal at a first rate until the average peak value falls within the dynamic range of the digital circuit and (b) a direct step mode in which the gain signal adjustment subcircuit increases the periods of time and adjusts the gain signal at a second rate as a function of a deviation of the average peak value from a target average peak value, the first rate being faster than the second rate, the analyzing circuit thereby applying a two-stage gain determination process to the digital signal to approach the target average peak value.
摘要翻译：用于从具有给定动态范围的数字电路接收数字信号的自动增益控制，并从其产生要施加到可变增益放大器的增益信号，分析电路和确定其的幅度的方法增益信号。分析电路包括：（1）确定在可变时间段内的数字信号的平均峰值的峰值采样子电路和（2）耦合到峰值采样子电路的增益信号调整子电路，其在所选择的一个中工作：（a）搜索模式，其中增益信号调节分支电路减小时间段，并以第一速率调整增益信号，直到平均峰值落入数字电路的动态范围内，并且（b）直接步骤模式，其中所述增益信号调节子电路增加所述时间段，并且以所述平均峰值与目标平均峰值的偏差为函数，以第二速率调整所述增益信号，所述第一速率快于所述第二速率，分析电路由此对数字信号应用两级增益确定处理以接近目标平均峰值。

9. 发明授权

US5909462A System and method for improved spread spectrum signal detection 失效
标题翻译：改进扩频信号检测的系统和方法
公开(公告)号：US5909462A
公开(公告)日：1999-06-01
申请号：US775737
申请日：1996-12-31
申请人： Adriaan Kamerman , Hans van Driest
发明人： Adriaan Kamerman , Hans van Driest
IPC分类号： H04L27/22 , H04L12/28 , H04B15/00
CPC分类号： H04B1/707
摘要： For use in a direct sequence spread spectrum ("DSSS") receiver adapted to receive a differential phase shift keyed ("DPSK") packet on a channel, the DPSK packet having a training preamble and a data portion, a system to improve detection of the packet under degraded channel conditions, comprising: (1) a detection circuit that derives phase information from symbols in the packet and a weight that is a function of an estimated power profile for the channel and (2) a computation circuit that computes a weighted average for the phase information using the weight, the weighted average being power profile-based to allow the receiver to detect the data contained in the packet more reliably under the degraded channel conditions.
摘要翻译：为了用于在信道上接收差分相移键控（“DPSK”）分组的直接序列扩频（“DSSS”）接收机，DPSK分组具有训练前同步码和数据部分，所述分组在恶化的信道条件下，包括：（1）从所述分组中的符号导出相位信息的检测电路和作为所述信道的估计功率分布的函数的权重，以及（2）计算加权的使用权重的相位信息的平均值，加权平均值是基于功率曲线的，以允许接收机在劣化信道条件下更可靠地检测包中包含的数据。

10. 发明申请

US20100034326A1 Receiver for receiving data symbols having a symbol period 有权
标题翻译：用于接收具有符号周期的数据符号的接收器
公开(公告)号：US20100034326A1
公开(公告)日：2010-02-11
申请号：US12373243
申请日：2006-07-12
申请人： Hans van Driest , Cornelis Adrianus Henricus Maria van Puijenbroek
发明人： Hans van Driest , Cornelis Adrianus Henricus Maria van Puijenbroek
IPC分类号： H04L27/06
CPC分类号： H04L1/06 , H04B7/0811
摘要： A receiver and method for receiving symbols having a symbol period with duration SP comprising. N antenna signals are selected equally in time over a symbol period to obtain a combined antenna signal. An autocorrelation is performed on the combined antenna signal to obtain a combined signal. The combined signal is split into the corresponding antenna signal parts and subjected to an integration function. The output of the integration function is used the select the antenna signal with the best signal quality. The invention enables to perform an efficient antenna diversity circuit, which can partially be used for simultaneously preamble detection and frequency offset estimation.
摘要翻译：一种用于接收具有持续时间SP的符号周期的符号的接收机和方法。 N个天线信号在符号周期内在时间上被相等地选择以获得组合的天线信号。对组合的天线信号执行自相关以获得组合信号。组合信号被分成相应的天线信号部分并进行积分功能。使用积分功能的输出来选择具有最佳信号质量的天线信号。本发明能够执行有效的天线分集电路，其可以部分地用于同步前导码检测和频率偏移估计。

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