公开(公告)号：US20120171980A1

公开(公告)日：2012-07-05

申请号：US13173973

申请日：2011-06-30

申请人： Pete Sivonen ,  Jonne Riekki ,  Jouni Kaukovuori ,  Sami Vilhonen ,  Jarkko Jussila

发明人： Pete Sivonen ,  Jonne Riekki ,  Jouni Kaukovuori ,  Sami Vilhonen ,  Jarkko Jussila

IPC分类号： H04B1/18

CPC分类号： H03H19/008

摘要： An integrated circuit for a radio receiver comprising a radio-frequency amplifier and a radio-frequency filter is described. The amplifier receives radio-frequency signals from an antenna, the filter is connected to the amplifier output, and the output of the filter is provided to a processing stage of the receiver. The amplifier comprises an amplifying stage controlled by a radio-frequency input signal and a signal fed back from the filter. The amplifier input impedance is substantially matched to the antenna impedance at a frequency band of interest. The signal fed back from the filter providing attenuation of signals outside the frequency band of interest at the amplifier input. The filter comprises one or more filter components. A filter component comprises a first input and a second input for receiving the amplifier output, a first switch arranged to selectively connect the first input to a first impedance, a second switch arranged to selectively connect the first input to a second impedance, a third switch arranged to selectively connect the second input to the first impedance, and a fourth switch arranged to selectively connect the second input to the second impedance. The first and fourth switches are controlled by a first oscillator signal and the second and third switches are controlled by a second oscillator signal that is 180° out of phase with the first oscillator signal.

摘要翻译： 描述了一种用于包括射频放大器和射频滤波器的无线电接收机的集成电路。 放大器从天线接收射频信号，滤波器连接到放大器输出，滤波器的输出提供给接收器的处理级。 放大器包括由射频输入信号控制的放大级和从滤波器反馈的信号。 放大器输入阻抗基本上与感兴趣的频带处的天线阻抗匹配。 从滤波器反馈的信号在放大器输入端提供感兴趣频带之外的信号衰减。 过滤器包括一个或多个过滤器部件。 滤波器部件包括用于接收放大器输出的第一输入端和第二输入端，布置成选择性地将第一输入端连接到第一阻抗的第一开关，布置成有选择地将第一输入端连接到第二阻抗的第二开关，第三开关 布置成选择性地将第二输入端连接到第一阻抗，以及第四开关，被布置为选择性地将第二输入端连接到第二阻抗。 第一和第四开关由第一振荡器信号控制，第二和第三开关由与第一振荡器信号相差180°的第二振荡器信号控制。

公开(公告)号：US20070218856A1

公开(公告)日：2007-09-20

申请号：US11378159

申请日：2006-03-17

申请人： Sami Vilhonen

发明人： Sami Vilhonen

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H03H19/008

摘要： A receiving method, a transceiver and a receiver are provided. The receiver comprises an antenna for receiving a radio frequency signal, a local oscillator, an amplifier for amplifying the received signal, a phase shifter connected between the antenna and the amplifier, the phase shifter converting a high impedance at one end of the phase shifter to a low impedance at the other end, and vice versa. The receiver further comprises a filter, the frequency response of the filter being determined on a frequency related to the frequency of the local oscillator, the filter comprising a switching arrangement which converts the frequency response to radio frequency.

摘要翻译： 提供接收方法，收发机和接收机。 接收机包括用于接收射频信号的天线，本地振荡器，用于放大接收信号的放大器，连接在天线和放大器之间的移相器，将移相器的一端的高阻抗转换为 另一端的低阻抗，反之亦然。 接收机还包括滤波器，滤波器的频率响应是根据与本地振荡器的频率有关的频率来确定的，该滤波器包括一个将频率响应转换成射频的切换装置。

公开(公告)号：US20060208791A1

公开(公告)日：2006-09-21

申请号：US11092952

申请日：2005-03-18

申请人： Sami Vilhonen

发明人： Sami Vilhonen

IPC分类号： H04B1/10

CPC分类号： H03H19/008 ,  H04B1/0017 ,  H04B1/18

摘要： The present invention provides a method for using transferred-impedance filtering in RF (radio frequency) receivers (e.g., inside of a mobile communication device), wherein said filtering can be done with MOS-switches transferring impedance of a regular RC or RCL circuit to RF frequency filtering inside an RFIC (radio frequency integrated circuit).

摘要翻译： 本发明提供了一种在RF（射频）接收机（例如，移动通信设备内部）中使用传输阻抗滤波的方法，其中所述滤波可以通过传输常规RC或RCL电路的阻抗的MOS开关来实现， RFIC（射频集成电路）内的RF频率滤波。

公开(公告)号：US20050040894A1

公开(公告)日：2005-02-24

申请号：US10643599

申请日：2003-08-18

申请人： Jarmo Heinonen ,  Markus Pettersson ,  Sami Vilhonen

发明人： Jarmo Heinonen ,  Markus Pettersson ,  Sami Vilhonen

IPC分类号： H03L7/22 ,  H04B1/40 ,  H03L7/00

CPC分类号： H04B1/406 ,  H03L7/22

摘要： The invention relates to a phase-locked loop structure providing local oscillator signals. In order to enable an improved supply of local oscillator signals, the phase-locked loop structure comprises a first phase-locked loop including a first voltage controlled oscillator and a second phase-locked loop including a second voltage controlled oscillator. A first local oscillator output provides a first local oscillator signal, wherein a signal output by the first voltage controlled oscillator is forwarded to the first local oscillator output. A second local oscillator output provides a second local oscillator signal. A selection component forwards a signal output by the first voltage controlled oscillator or a signal output by the second voltage controlled oscillator to the second local oscillator output. The invention relates equally to a corresponding communication unit and to a corresponding method.

公开(公告)号：US08451157B2

公开(公告)日：2013-05-28

申请号：US13076717

申请日：2011-03-31

申请人： Sami Vilhonen ,  Rami Tapani Eskola

发明人： Sami Vilhonen ,  Rami Tapani Eskola

IPC分类号： H03M1/66

CPC分类号： H03M1/802

摘要： A digital-to-analog upconverter directly converts a baseband digital value comprising a plurality of bits to an RF analog signal to combine digital-to-analog operations with frequency upconversion operations. One exemplary digital-to-analog upconverter comprises a plurality of conversion units, one for each of the plurality of bits in the baseband digital value, and an output node coupled to each of the conversion units. Each conversion unit generates a weighted analog signal at a low frequency or at a radio frequency responsive to the corresponding input bit and an oscillator signal at RF. The weighting factor of each conversion unit corresponds to a relative weighting of the corresponding bit. The output node combines the weighted analog signals to generate a combined RF analog signal representative of the baseband digital value.

摘要翻译： 数模转换上变频器将包含多个位的基带数字值直接转换为RF模拟信号，以将数模转换操作与上变频操作组合。 一个示例性的数/模上变频器包括多个转换单元，一个用于基带数字值中的多个比特中的每一个，以及耦合到每个转换单元的输出节点。 每个转换单元响应于相应的输入位和RF处的振荡器信号以低频率或射频产生加权模拟信号。 每个转换单元的加权因子对应于相应位的相对加权。 输出节点组合加权模拟信号以产生表示基带数字值的组合RF模拟信号。

公开(公告)号：US20060214736A1

公开(公告)日：2006-09-28

申请号：US11102936

申请日：2005-03-23

申请人： Vesa Salonen ,  Sami Vilhonen

发明人： Vesa Salonen ,  Sami Vilhonen

IPC分类号： H03L7/00

CPC分类号： H03L7/189 ,  H03L7/113

摘要： A PLL comprises a VCO and a loop filter, wherein the VCO generates an AC output signal having a frequency which depends on an applied control voltage, and wherein the loop filter provides a control voltage to the VCO. The control voltage reflects determined phase differences between a potentially frequency divided output signal of the VCO and a reference signal. When operating the PLL, frequency deviations between a potentially frequency divided output signal of the VCO and a reference signal are detected and in addition, a resolution employed for detecting the frequency deviations is lower than a resolution employed for determining the phase differences. In case a frequency deviation is detected, a direct-current voltage shift is added to the control voltage provided by the loop filter.

摘要翻译： PLL包括VCO和环路滤波器，其中VCO产生具有取决于施加的控制电压的频率的AC输出信号，并且其中环路滤波器向VCO提供控制电压。 控制电压反映了VCO的潜在分频输出信号与参考信号之间确定的相位差。 当操作PLL时，检测VCO的潜在分频输出信号与参考信号之间的频率偏差，此外，用于检测频率偏差的分辨率低于用于确定相位差的分辨率。 在检测到频率偏差的情况下，将直流电压偏移加到由环路滤波器提供的控制电压。

公开(公告)号：US07027783B2

公开(公告)日：2006-04-11

申请号：US10372685

申请日：2003-02-24

申请人： Sami Vilhonen ,  Sami Vaara

发明人： Sami Vilhonen ,  Sami Vaara

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H04B1/04

摘要： A method is disclosed for operating a radio frequency transmitter chain component, as is a radio frequency transmitter chain component that operates in accordance with the method. The method includes receiving an input signal to be mixed with a signal output from an oscillator, where the input signal is received through an operational amplifier. The method further includes applying an output of the operational amplifier to an input of a mixing circuit, rectifying the input signal to produce a rectified input signal and controlling a common-mode output voltage of the operational amplifier with the rectified input signal. This process varies the power consumption of the component in a manner that is proportional to a value of the input signal. A further step couples a mixer output signal to an input of a VGA. The component may include both the mixer and the VGA. In the preferred embodiment the input signal and the mixer output signal are differential signals.

摘要翻译： 公开了一种用于操作射频发射机链组件的方法，以及根据该方法操作的射频发射机链组件。 该方法包括接收与从振荡器输出的信号混合的输入信号，其中通过运算放大器接收输入信号。 该方法还包括将运算放大器的输出应用于混合电路的输入，整流输入信号以产生整流的输入信号，并用经整流的输入信号控制运算放大器的共模输出电压。 该过程以与输入信号的值成比例的方式改变部件的功耗。 另一步骤将混频器输出信号耦合到VGA的输入。 该组件可以包括混频器和VGA。 在优选实施例中，输入信号和混频器输出信号是差分信号。

公开(公告)号：US06958653B2

公开(公告)日：2005-10-25

申请号：US10836677

申请日：2004-04-30

申请人： Sami Vaara ,  Sami Vilhonen

发明人： Sami Vaara ,  Sami Vilhonen

IPC分类号： H03F1/30 ,  H03F3/45

CPC分类号： H03F3/45479 ,  H03F1/30 ,  H03F3/45085 ,  H03F2203/45286 ,  H03F2203/45732

摘要： A temperature compensated amplifier with variable gain and to a radio device having an amplifier according to it. The gain control and temperature compensation of a differential amplifier (210) are implemented by a control circuit (220), which has a balanced and differential output (V1, V2). The output voltage of the control circuit, or the control voltage, is arranged to be proportional to difference between two source currents (IGT1, IGT2), which difference can be varied on both sides of zero. The output of the control circuit is connected to the bases of the differential pair (Q1, Q2) of the variable gain amplifier, whereupon the ratio of the output current (iout) to the input current (iin) of the pair becomes dependent on the control voltage. This is arranged to be proportional to the absolute temperature, too. A temperature change then changes the control voltage the more the higher the control voltage is. The temperature coefficient is adjusted so that the effect of the temperature on the current difference of the differential pair of the variable gain amplifier is compensated. Owing to differential type control circuit the current gain with temperature compensation can be varied in the whole range 0 . . . 1.

摘要翻译： 具有可变增益的温度补偿放大器和具有根据其的放大器的无线电设备。 差分放大器（210）的增益控制和温度补偿由控制电路（220）实现，控制电路（220）具有平衡和差分输出（V SUB1，V SUB2 / ）。 控制电路的输出电压或控制电压被布置成与两个源电流（I GT1，I GT2）之间的差成比例，该差可以是 变化在零的两边。 控制电路的输出端连接到可变增益放大器的差分对（Q 1，Q 2）的基极，于是输出电流（i OUT）与输入电流的比值 （中）取决于控制电压。 这也被设置成与绝对温度成正比。 温度变化然后改变控制电压越高控制电压。 调节温度系数，使得温度对可变增益放大器的差分对的电流差的影响得到补偿。 由于差分型控制电路，温度补偿的电流增益可以在整个范围0内变化。 。 。 1。

公开(公告)号：US20130169327A1

公开(公告)日：2013-07-04

申请号：US13338390

申请日：2011-12-28

申请人： Petri Heliö ,  Petri Korpi ,  Niko Mikkola ,  Paavo Väänänen ,  Sami Vilhonen

发明人： Petri Heliö ,  Petri Korpi ,  Niko Mikkola ,  Paavo Väänänen ,  Sami Vilhonen

IPC分类号： H03L7/06 ,  H03M1/10 ,  H03M1/12

CPC分类号： H03L7/06 ,  G04F10/005 ,  G04F10/105

摘要： The charge-to-digital timer apparatus and method disclosed herein estimates the elapsed time between two signals, e.g., a start signal and a stop signal. To that end, at least a capacitive load is charged with a known current to generate a load voltage. Subsequently, a first voltage is ramped in a plurality of discrete voltage steps associated with a plurality of known capacitances until the ramped voltage satisfies a predetermined criterion relative to a second voltage. The elapsed time is determined from the discrete voltage steps, one of the first and second voltages, the known current, and the known capacitive load.

摘要翻译： 这里公开的电荷数字计时装置和方法估计两个信号之间的经过时间，例如起始信号和停止信号。 为此，至少电容性负载以已知电流充电以产生负载电压。 随后，第一电压以与多个已知电容相关联的多个离散电压阶跃斜坡，直到斜坡电压相对于第二电压满足预定标准。 经过的时间由离散的电压阶跃确定，第一和第二电压之一，已知电流和已知的容性负载。

公开(公告)号：US08433273B2

公开(公告)日：2013-04-30

申请号：US11826788

申请日：2007-07-18

申请人： Jarmo Juhani Heinonen ,  Sami Vilhonen

发明人： Jarmo Juhani Heinonen ,  Sami Vilhonen

IPC分类号： H04B7/00

CPC分类号： H03G3/3068 ,  H03G3/3078

摘要： A direct-conversion radio receiver is provided. The receiver includes a first measurement unit configured to measure a signal level of a received signal at an input of the receiver. The receiver also includes a gain controller configured to stepwise adjust at least a front-end gain and a baseband gain of the receiver when the signal level of the received signal at the input of the receiver exceeds a given sensitivity level, and adjust the front-end gain with at least one further gain step when the input signal level is below the given sensitivity level.

摘要翻译： 提供直接转换无线电接收机。 接收机包括第一测量单元，其被配置为在接收机的输入处测量接收信号的信号电平。 接收机还包括增益控制器，配置成当接收机输入端的接收信号的信号电平超过给定灵敏度时，逐步调整接收机的前端增益和基带增益， 当输入信号电平低于给定灵敏度电平时，具有至少一个进一步增益步长的最终增益。