公开(公告)号：US07149191B2

公开(公告)日：2006-12-12

申请号：US10626025

申请日：2003-07-24

申请人： Karl Håkan Torbjörn Johansson-Gardenfors ,  Sven Mattisson ,  Jacobus Cornelis Haartsen

发明人： Karl Håkan Torbjörn Johansson-Gardenfors ,  Sven Mattisson ,  Jacobus Cornelis Haartsen

IPC分类号： H04J3/00

CPC分类号： H04B1/44 ,  H04B1/3833 ,  H04B1/408 ,  H04B1/715 ,  H04B15/00 ,  H04B2001/7152 ,  H04J3/10 ,  H04L5/1461 ,  H04L27/122

摘要： An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.

公开(公告)号：US06975667B2

公开(公告)日：2005-12-13

申请号：US09859704

申请日：2001-05-17

申请人： Sven Mattisson ,  Jacobus Haartsen ,  Robert Bristow

发明人： Sven Mattisson ,  Jacobus Haartsen ,  Robert Bristow

IPC分类号： H04B1/38 ,  H04B1/40 ,  H04B7/185 ,  H04L12/56 ,  H04W84/06 ,  H04W84/18 ,  H04W88/06 ,  H04B1/69 ,  H04B1/713

CPC分类号： H04W88/06 ,  H04B1/005 ,  H04B1/3805 ,  H04B1/406 ,  H04B7/18563 ,  H04W84/06 ,  H04W84/18

摘要： A dual-radio communication apparatus has a first radio device, such as a Bluetooth radio, for use in a first frequency band, and a second radio device, such as a Globalstar satellite radio, for use in a second frequency band, which is proximate to the first frequency band. The communication apparatus also has a controller coupled to the first and second radio devices. The first radio device may comprise a frequency-hopping spread-spectrum transmitter. Moreover, the first radio device has a first operating mode employing a first frequency range. The first radio device also has a second operating mode employing a second frequency range, which is smaller than the first frequency range. The controller is adapted to set the first radio device in its second operating mode, when the second radio device is in operation, and otherwise set the first radio device in its first operating mode.

摘要翻译： 双无线电通信装置具有用于第一频带的第一无线电装置，诸如蓝牙无线电装置，以及第二无线电装置，例如全球星卫星无线电装置，用于在第二频带中使用的第二无线电装置 到第一个频带。 通信设备还具有耦合到第一和第二无线电设备的控制器。 第一无线电设备可以包括跳频扩频发射机。 此外，第一无线电设备具有采用第一频率范围的第一操作模式。 第一无线电设备还具有采用小于第一频率范围的第二频率范围的第二操作模式。 控制器适于将第一无线电设备设置在其第二操作模式中，当第二无线电设备正在运行时，否则将第一无线电设备设置为其第一操作模式。

公开(公告)号：US20050007149A1

公开(公告)日：2005-01-13

申请号：US10855369

申请日：2004-05-28

申请人： Lars Svensson ,  Sven Mattisson

发明人： Lars Svensson ,  Sven Mattisson

IPC分类号： H03F1/22 ,  H03K17/16 ,  H03K17/687 ,  H03K19/003 ,  H03K19/0175

CPC分类号： H03F1/223 ,  H03F2200/114 ,  H03F2200/417 ,  H03K17/162 ,  H03K19/00361

摘要： A method and apparatus for minimizing harmonic content in a digital signal driver circuit are disclosed. A digital input signal applied to an input node generates a corresponding digital output in a circuit with two or more MOS devices in cascode connection with each other. The slew rate of leading or trailing edge transitions associated with the output signal are controlled using one or more parasitic capacitances associated with the fabrication of two or cascode connected MOS devices. The two or more cascode connected MOS devices may further each have gate electrodes connected to a fixed potential so as to minimize the harmonic content. A control signal may further be applied to each gate electrode to turn off a leakage current path between source and drain electrodes. Harmonics may further be controlled by limiting a conductance between gate electrodes and fixed potentials using an active or passive device.

摘要翻译： 公开了一种用于最小化数字信号驱动器电路中的谐波含量的方法和装置。 施加到输入节点的数字输入信号在具有彼此并联连接的两个或多个MOS器件的电路中产生相应的数字输出。 使用与两个或共源共栅连接的MOS器件的制造相关联的一个或多个寄生电容来控制与输出信号相关联的前沿或后沿跃迁的转换速率。 两个或更多个共源共栅连接的MOS器件还可以进一步具有连接到固定电位的栅电极，以使谐波含量最小化。 还可以将控制信号施加到每个栅电极以关闭源极和漏极之间的漏电流路径。 通过使用有源或无源器件限制栅电极和固定电位之间的电导可以进一步控制谐波。

公开(公告)号：US06577212B1

公开(公告)日：2003-06-10

申请号：US09617109

申请日：2000-07-14

申请人： Sven Mattisson ,  Henrik Geis

发明人： Sven Mattisson ,  Henrik Geis

IPC分类号： H03H1142

CPC分类号： H03H11/42 ,  H03H11/08

摘要： The invention relates to an integrated gyrator structure, in which each transistor in the gyrator core (preferably MOS devices) has series feedback associated therewith. This allows for compensation over a large bandwidth of the effects of channel delay in the MOS transistors.

摘要翻译： 本发明涉及一种集成回转器结构，其中回转器芯（优选MOS器件）中的每个晶体管具有与其相关联的串联反馈。 这允许在MOS晶体管的通道延迟的影响的大带宽上进行补偿。

公开(公告)号：US4479093A

公开(公告)日：1984-10-23

申请号：US327075

申请日：1981-12-03

申请人： Sven Mattisson

发明人： Sven Mattisson

IPC分类号： H03F3/45

CPC分类号： H03F3/45479

摘要： An amplifier (10) is disclosed including circuity for improving the amplifiers performance, particularly the common mode rejection of differential amplifiers, by adding the amplifier input signal to the power supply signals which power the amplifier. Voltage dividers (42, 44) are connected between the amplifier output (16) and each of the two power supply rails (26, 28). Each divider includes resistors (46, 48; 50, 52) selected so that the amplifier output is divided down by a factor equal to the gain of the amplifier. The junction signals (V.sub.J1, V.sub.J2) provided by the two voltage dividers thus each includes a component equal to the input signal. The junction voltages are applied to the amplifier power input terminals (18, 20) by respective transistors (60, 62), each connected in a voltage follower arrangement. One embodiment (FIG. 4) incorporates a servo amplifier (100) for DC offset stabilization. Impedances (104, 106) couple the output of the servo amplifier to the voltage dividers so that no loss in common mode rejection results from servo operation.

摘要翻译： 公开了一种放大器（10），其包括用于通过将放大器输入信号添加到为放大器供电的电源信号而改善放大器性能，特别是差分放大器的共模抑制的电路。 分压器（42,44）连接在放大器输出端（16）和两个电源轨道（26,28）中的每一个之间。 每个分频器包括被选择的电阻器（46,48; 50,52），使得放大器输出被除以等于放大器的增益的因子。 因此，由两个分压器提供的结信号（VJ1，VJ2）各自包括等于输入信号的分量。 结电压通过相应的晶体管（60,62）施加到放大器功率输入端子（18,20），每个晶体管以电压跟随器结构连接。 一个实施例（图4）包括用于DC偏移稳定的伺服放大器（100）。 阻抗（104,106）将伺服放大器的输出耦合到分压器，使得伺服操作不会导致共模抑制损耗。

公开(公告)号：US09112450B2

公开(公告)日：2015-08-18

申请号：US13983079

申请日：2012-02-08

申请人： Lars Sundström ,  Sven Mattisson

发明人： Lars Sundström ,  Sven Mattisson

IPC分类号： H04B1/16 ,  H03D7/16

CPC分类号： H03D7/16 ,  H03D7/166 ,  H03H19/002 ,  H03H19/008

摘要： A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 comprises a frequency dependent load impedance, the filter having band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.

摘要翻译： 频率转换滤波器500被配置为接收包括第一和第二非连续载波或非连续频率范围的射频（RF）信号501。 频率转换滤波器包括混频器503，其被配置为将在第一输入上接收的RF信号501与在第二输入端接收的本地振荡器（LO）信号505进行混频。 滤波器507包括频率相关负载阻抗，滤波器具有带通特性，当使用混频器503进行频率转换时，该频带特性包含对应于第一和第二非连续载波或非连续频率范围的第一和第二通带 。 第一和第二通带以本地振荡器频率为中心。

公开(公告)号：US20140030997A1

公开(公告)日：2014-01-30

申请号：US13983079

申请日：2012-02-08

申请人： Lars Sundström ,  Sven Mattisson

发明人： Lars Sundström ,  Sven Mattisson

IPC分类号： H03D7/16

CPC分类号： H03D7/16 ,  H03D7/166 ,  H03H19/002 ,  H03H19/008

摘要： A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 comprises a frequency dependent load impedance, the filter having band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.

摘要翻译： 频率转换滤波器500被配置为接收包括第一和第二非连续载波或非连续频率范围的射频（RF）信号501。 频率转换滤波器包括混频器503，其被配置为将在第一输入上接收的RF信号501与在第二输入端接收的本地振荡器（LO）信号505进行混频。 滤波器507包括频率相关负载阻抗，滤波器具有带通特性，当使用混频器503进行频率转换时，滤波器包含对应于第一和第二非连续载波或非连续频率范围的第一和第二通带 。 第一和第二通带以本地振荡器频率为中心。

公开(公告)号：US08155032B2

公开(公告)日：2012-04-10

申请号：US12255054

申请日：2008-10-21

申请人： Bengt Lindoff ,  William O. Camp ,  Sven Mattisson

发明人： Bengt Lindoff ,  William O. Camp ,  Sven Mattisson

IPC分类号： H04L5/16

CPC分类号： H04W72/082 ,  H04W72/048 ,  H04W84/08

摘要： Adaptation is introduced into allocation of uplink and downlink subframes in wireless communication systems that support full-duplex and half-duplex mobile terminals, thus reducing interference between mobile terminals. In an exemplary method for allocating uplink and downlink timeslots in a wireless communication system supporting full-duplex and half-duplex mobile terminals, a base station determines that a mobile terminal is capable of only half-duplex operation and allocates one or more uplink subframes and one or more downlink subframes to the first mobile terminal, for each of a plurality of frames, so that none of the allocated uplink subframes overlaps in time with an allocated downlink subframe. The allocation of uplink subframes and downlink subframes is varied between consecutive ones in at least a first series of frames according to a pre-determined pattern. In some embodiments, the method further includes transmitting an allocation message to the first mobile terminal, designating the pre-determined pattern.

摘要翻译： 在支持全双工和半双工移动终端的无线通信系统中，将适配引入到上行链路和下行链路子帧的分配中，从而减少移动终端之间的干扰。 在支持全双工和半双工移动终端的无线通信系统中分配上行链路和下行链路时隙的示例性方法中，基站确定移动终端仅能够进行半双工操作，并且分配一个或多个上行链路子帧， 一个或多个下行链路子帧到第一移动终端，用于多个帧中的每一个，使得所分配的上行链路子帧中的任何一个都不会与分配的下行链路子帧在时间上重叠。 上行链路子帧和下行链路子帧的分配根据预定模式在至少第一系列帧中在连续帧的分配之间变化。 在一些实施例中，该方法还包括向第一移动终端发送分配消息，指定预定模式。

公开(公告)号：US20110103508A1

公开(公告)日：2011-05-05

申请号：US12611677

申请日：2009-11-03

申请人： Fenghao Mu ,  Sven Mattisson

发明人： Fenghao Mu ,  Sven Mattisson

IPC分类号： H04L27/00

CPC分类号： H03F3/24 ,  H03F3/195 ,  H03F3/211 ,  H03F2200/336

摘要： A digital affine transformation modulator and power amplifier drives a transmitter antenna. The modulator performs an affine transformation on a signal, wherein the I, Q space is mapped to a plurality of sectors. A signal in a sector is expressed as the sum of two vectors, the angles of which define the sector boundaries. A digital power amplifier comprises a plurality of amplifier cells, each cell comprising at least two amplifier units. For a given signal, each amplifier unit selectively amplifies a clock signal having a phase corresponding to one of the boundary angles of the signal's affine transformed sector. A subset of the plurality of amplifier cells receiving each phase clock signal are enabled, based on the magnitude of the associated vector describing the signal in affine transform space. The modulation scheme exhibits higher efficiency than quadrature modulation, without the bandwidth expansion and group delay mismatch of polar modulation.

摘要翻译： 数字仿射变换调制器和功率放大器驱动发射机天线。 调制器对信号执行仿射变换，其中I，Q空间映射到多个扇区。 扇区中的信号被表示为两个矢量的和，它们的角度限定了扇区边界。 数字功率放大器包括多个放大器单元，每个单元包括至少两个放大器单元。 对于给定信号，每个放大器单元选择性地放大具有对应于信号仿射变换扇区的一个边界角的相位的时钟信号。 基于描述仿射变换空间中的信号的相关矢量的大小，启用接收每个相位时钟信号的多个放大器单元的子集。 调制方案表现出比正交调制更高的效率，没有频带扩展和极化调制的群延迟失配。

公开(公告)号：US20100159837A1

公开(公告)日：2010-06-24

申请号：US12339726

申请日：2008-12-19

申请人： Paul Wilkinson Dent ,  Sven Mattisson

发明人： Paul Wilkinson Dent ,  Sven Mattisson

IPC分类号： H04B1/00 ,  H04K1/10

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. Further, the method comprises dividing the sampled distortion signal estimate and the sampled signal of interest into a plurality of frequency channels. Finally, for a selected number of frequency channels, the method comprises combining the sampled distortion signal estimate for a frequency channel with the corresponding sampled signal of interest for the same frequency channel to obtain interference-reduced signal samples for the frequency channel.

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。 此外，该方法包括将采样的失真信号估计和所获取的采样信号分成多个频率信道。 最后，对于选定数量的频道，该方法包括将用于频率信道的采样失真信号估计与相同频率信道的对应采样信号组合，以获得用于频率信道的干扰减小信号样本。