公开(公告)号：US07675375B2

公开(公告)日：2010-03-09

申请号：US12185320

申请日：2008-08-04

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： H03B5/32

CPC分类号： H03B5/364

摘要： An electrical oscillator circuit comprising: a resonator comprised in the first subcircuit; and an active device comprised in the second subcircuit connected to energize the resonator to provide an oscillating electrical signal transmitted as a differential signal via electrical conductors to the second subcircuit. The oscillator is characterized in that the second subcircuit comprises means for receiving the differential signal transmitted via the electrical conductors and converting the differential signal to a single-ended signal with reference to the signal ground reference of the second subcircuit. Thereby a noise robust oscillator signal is provided with the use of very few components. Particularly suitable for oscillators embodied in an integrated circuit with the resonator mounted on a printed circuit board, PCB. And an integrated circuit.

摘要翻译： 一种电振荡器电路，包括：包括在所述第一子电路中的谐振器; 以及包括在所述第二子电路中的有源器件，其连接用于激励所述谐振器，以将经由电导体发送的差分信号的振荡电信号提供给所述第二子电路。 振荡器的特征在于，第二分支电路包括用于接收通过电导体发送的差分信号的装置，并且参考第二子电路的信号接地参考将差分信号转换成单端信号。 因此，使用非常少的组件来提供噪声鲁棒振荡器信号。 特别适用于具有安装在印刷电路板，PCB上的谐振器的集成电路中的振荡器。 和一个集成电路。

公开(公告)号：US20090325509A1

公开(公告)日：2009-12-31

申请号：US12163248

申请日：2008-06-27

申请人： Sven Mattisson ,  Paul Wilkinson Dent

发明人： Sven Mattisson ,  Paul Wilkinson Dent

IPC分类号： H04B1/40

CPC分类号： H04B1/525

摘要： Circuits and methods are disclosed for reducing interference from transmitter leakage in a radio transceiver. An exemplary method for reducing interference from transmitter leakage in a radio transceiver comprises downconverting, filtering, and sampling a radio frequency signal comprising a desired signal and a transmitter leakage signal to obtain a sampled signal of interest. The method further comprises generating a sampled distortion signal estimate that estimates one or more distortion products of the transmitter leakage signal, such as a squared amplitude obtained from a square-law device or corresponding digital function. Finally, the method comprises combining the sampled distortion signal estimate with the sampled signal of interest to obtain interference-reduced signal samples. In some embodiments, this may comprise correlating the sampled distortion signal estimate with the sampled signal of interest to determine a scaling factor, scaling the sampled distortion signal estimate with the scaling factor, and subtracting the scaled distortion signal estimate from the sampled signal of interest to obtain the interference-reduced signal samples.

摘要翻译： 公开了用于减少无线电收发器中发射机泄漏的干扰的电路和方法。 用于减少无线电收发机中的发射机泄漏的干扰的示例性方法包括对包括期望信号和发射机泄漏信号的射频信号进行下变频，滤波和采样，以获得感兴趣的采样信号。 该方法还包括生成估计发射机泄漏信号的一个或多个失真产物的采样失真信号估计，例如从平方律装置获得的平方振幅或相应的数字功能。 最后，该方法包括将采样的失真信号估计与所关注的采样信号组合以获得干扰减小的信号采样。 在一些实施例中，这可以包括将采样的失真信号估计与所关注的采样信号相关联以确定缩放因子，用缩放因子缩放采样的失真信号估计，以及从所感测的采样信号中减去经缩放的失真信号估计 获得干扰减少信号样本。

公开(公告)号：US07583155B2

公开(公告)日：2009-09-01

申请号：US10550241

申请日：2004-03-19

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： G06F7/58

CPC分类号： G06F7/588 ,  H03B29/00 ,  H03K3/84

摘要： A device for generating a random sequence (10) of bits is disclosed. The device comprises oscillating means (13), which will generate a random sequence of bits when biased with a noise signal. The oscillating means comprises at least one oscillator amplifier being protected from interfering signals by means of a load and a tail-current source for providing high noise-interference ratio. Further, the present invention relates to an integrated circuit and an electronic apparatus comprising the device for generating a random sequence according to the invention.

摘要翻译： 公开了一种用于产生位的随机序列（10）的装置。 该装置包括振荡装置（13），当用噪声信号偏置时，该装置将产生一个随机的位序列。 振荡装置包括至少一个振荡器放大器，通过负载和用于提供高噪声干扰比的尾电流源来防止干扰信号。 此外，本发明涉及集成电路和电子设备，其包括用于产生根据本发明的随机序列的装置。

公开(公告)号：US20090180402A1

公开(公告)日：2009-07-16

申请号：US12099945

申请日：2008-04-09

申请人： Bengt Lindoff ,  Sven Mattisson

发明人： Bengt Lindoff ,  Sven Mattisson

IPC分类号： H04B7/00

CPC分类号： H04L5/16 ,  H04B1/44

摘要： A half-duplex mobile terminal having first and second receiver branches connected, during a receive mode, to respective antennas, is disclosed. One of the antennas is selectively connected to the first receiver branch or to a transmitter circuit. The first antenna is connected to the first receiver branch during a first interval, during which interval data is detected using outputs from both the first and second receiver branches. The first antenna is disconnected from the first receiver branch at the end of the first interval, and, during a second interval immediately following the first interval, data is detected using the output of the second receiver branch. A portion of the incoming transmission that arrives during the transition between the receive mode and transmit mode in a half-duplex transceiver is thus received and detected, improving performance of the half-duplex transceiver.

摘要翻译： 公开了一种在接收模式期间将第一和第二接收机分支连接到相应天线的半双工移动终端。 其中一个天线选择性地连接到第一接收机分支或发射机电路。 第一天线在第一间隔期间连接到第一接收器分支，在该间隔期间，使用来自第一和第二接收器分支的输出检测间隔数据。 在第一间隔结束时，第一天线与第一接收器分支断开，并且在第一间隔之后的第二间隔期间，使用第二接收器分支的输出来检测数据。 因此，在半双工收发器中的接收模式和发送模式之间的转换期间到达的输入传输的一部分被接收和检测，从而提高了半双工收发器的性能。

公开(公告)号：US07432772B2

公开(公告)日：2008-10-07

申请号：US10478973

申请日：2002-05-10

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： H03B5/32

CPC分类号： H03B5/364

摘要： An electrical oscillator circuit (301, 302) comprising: a resonator (303) comprised in the first subcircuit (301); and an active device (309) comprised in the second subcircuit (302) connected to energize the resonator (303) to provide an oscillating electrical signal transmitted as a differential signal via electrical conductors (306, 307) to the second subcircuit (302). The oscillator is characterized in that the second subcircuit (302) comprises means (311, 312, 313, 314) for receiving the differential signal transmitted via the electrical conductors (306, 307) and converting the differential signal to a single-ended signal with reference to the signal ground reference (G2) of the second subcircuit (302). Thereby a noise robust oscillator signal is provided with the use of very few components. Particularly suitable for oscillators embodied in an integrated circuit with the resonator mounted on a printed circuit board, PCB. And an integrated circuit.

摘要翻译： 一种电振荡器电路（301,302），包括：包括在所述第一子电路（301）中的谐振器（303）; 以及包括在所述第二子电路（302）中的有源器件（309），其连接以激励所述谐振器（303），以经由电导体（306,307）向所述第二子电路（302）提供作为差分信号发送的振荡电信号。 振荡器的特征在于，第二分支电路（302）包括用于接收通过电导体（306,307）传输的差分信号并将差分信号转换为单端信号的装置（311,312,313,314） 参考第二子电路（302）的信号接地基准（G 2）。 因此，使用非常少的组件来提供噪声鲁棒振荡器信号。 特别适用于具有安装在印刷电路板，PCB上的谐振器的集成电路中的振荡器。 和一个集成电路。

公开(公告)号：US07301404B2

公开(公告)日：2007-11-27

申请号：US11186060

申请日：2005-07-21

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： H03L7/07 ,  H03L7/16 ,  H04B7/00

CPC分类号： H04B1/403 ,  H03L7/185 ,  H03L7/1974 ,  H03L7/23

摘要： A method and apparatus for frequency synthesis in a transceiver are based on providing a primary frequency synthesizer configured to synthesize a receiver frequency signal from a receiver reference frequency signal, and providing an offset frequency synthesizer configured to synthesize a transmitter frequency signal from the receiver frequency signal using fractional-N division, which allows it to operate at an intermediate frequency that is a non-integer multiple of the receiver frequency signal. That arrangement enables non-integer duplex frequency distances between desired receive and transmit frequencies. The primary frequency synthesizer also may be operated as a fractional-N frequency synthesizer, meaning that the receiver frequency signal may have a non-integer relationship to the receiver reference frequency signal. Configuring the primary and offset frequency synthesizers to operate with fractional-N frequency synthesis allows independent frequency tuning/optimization of the primary and secondary frequency synthesizers.

公开(公告)号：US06985551B1

公开(公告)日：2006-01-10

申请号：US09580632

申请日：2000-05-30

申请人： Sven Mattisson ,  Hans Hagberg ,  Magnus Nilsson

发明人： Sven Mattisson ,  Hans Hagberg ,  Magnus Nilsson

IPC分类号： H03D3/24

CPC分类号： H03L7/1976 ,  H03D13/004 ,  H03L7/0891

摘要： A phase-locked loop includes a phase detector, a loop filter, a voltage controlled oscillator and a frequency divider arranged such that the phase detector generates a phase detector output signal as a function of a phase difference between the reference clock signal and the feedback signal; the loop filter generates a frequency control signal from the phase detector output signal; the voltage controlled oscillator generates a phase-locked loop output signal that has a frequency that is controlled by the frequency control signal; and the frequency divider generates the feedback signal from the phase-locked loop output signal. The phase-locked loop further includes one or more circuit elements that maintain an operating point of the phase detector such that, for a predetermined range of both positive and negative phase differences between the reference clock signal and the feedback signal, the output signal is generated as a substantially linear function of the phase difference between the reference clock signal and the feedback signal.

摘要翻译： 锁相环包括相位检测器，环路滤波器，压控振荡器和分频器，其被布置成使得相位检测器产生作为参考时钟信号和反馈信号之间的相位差的函数的相位检测器输出信号 ; 环路滤波器从相位检测器输出信号产生频率控制信号; 压控振荡器产生具有由频率控制信号控制的频率的锁相环输出信号; 并且分频器从锁相环输出信号产生反馈信号。 锁相环还包括保持相位检测器的工作点的一个或多个电路元件，使得在参考时钟信号和反馈信号之间的正和负相位差的预定范围内，产生输出信号 作为参考时钟信号和反馈信号之间的相位差的基本线性函数。

公开(公告)号：US20060002492A1

公开(公告)日：2006-01-05

申请号：US11220034

申请日：2005-09-06

申请人： Sven Mattisson ,  Leif Wilhelmsson ,  Peter Markenlöv

发明人： Sven Mattisson ,  Leif Wilhelmsson ,  Peter Markenlöv

IPC分类号： H04L27/10

CPC分类号： H04L25/061 ,  H03F3/45986 ,  H03K5/003 ,  H04L25/062 ,  H04L27/142

摘要： A method of estimating a DC offset value of a signal includes estimating a DC offset value of a preamble part of the signal using a pair of diodes (D1, D2) and a resistor (R) connected in parallel. During receipt of the data part of the signal, the diode pair (D1, D2) is switched out of the circuit by a switch (SW). During reception of the data part, the DC level is estimated using a low pass filter (R,C).

公开(公告)号：US06925296B2

公开(公告)日：2005-08-02

申请号：US10036666

申请日：2001-12-21

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： H04R3/00 ,  H04B7/26 ,  H04M1/60 ,  H04B1/06

CPC分类号： H04M1/605 ,  H04M1/6016

摘要： A proximity detector for use in a mobile telephone having at least a microphone and a loudspeaker operatively connected to a signal processor is presented. The proximity detector includes data processing and control modules having a module for controlling the signal processor for activating the loudspeaker to reproduce an acoustic control signal. A correlator correlates a control signal received directly by the microphone and a control signal being reflected from a user of the telephone and then received by the microphone to determine the distance between the telephone and the user. A signal level controller controls the signal processor to vary the signal level of an audible signal reproduced by the loudspeaker proportionally to the determined distance between the telephone and the user.

摘要翻译： 提供了一种用于移动电话中的接近检测器，其具有至少一个可操作地连接到信号处理器的麦克风和扬声器。 接近检测器包括具有用于控制信号处理器以激活扬声器以再现声控信号的模块的数据处理和控制模块。 相关器将由麦克风直接接收的控制信号和从电话用户反射的控制信号相关联，然后由麦克风接收以确定电话和用户之间的距离。 信号电平控制器控制信号处理器，以将扬声器再现的可听信号的信号电平与确定的电话和用户之间的距离成比例地变化。

公开(公告)号：US06922551B1

公开(公告)日：2005-07-26

申请号：US09743642

申请日：1999-07-05

申请人： Robert Owen Bristow ,  Sven Mattisson

发明人： Robert Owen Bristow ,  Sven Mattisson

IPC分类号： H04B1/713 ,  H04B17/00 ,  H04W16/14 ,  H04B1/02

CPC分类号： H04W16/14 ,  H04B1/713

摘要： In a radio communications unit with several transceivers communicating in different frequency bands, a signal parameter of a selected channel is monitored in order to detect interference due to intermodulation products. The select channel is for example used by a long range radio communications link and the interfering channel on a short range radio link. Once the channel causing interference has been identified, transmissions on it are prevented.

摘要翻译： 在具有在不同频带中通信的多个收发器的无线电通信单元中，监视所选信道的信号参数，以便检测由于互调产物引起的干扰。 选择信道例如由远距离无线电通信链路和短距离无线电链路上的干扰信道使用。 一旦导致干扰的信道已经被识别，则防止其上的传输。