公开(公告)号：US06658244B2

公开(公告)日：2003-12-02

申请号：US09922478

申请日：2001-08-03

申请人： Josef Schmal ,  Timo Gossmann ,  Georg Lipperer ,  Stefan Herzinger

发明人： Josef Schmal ,  Timo Gossmann ,  Georg Lipperer ,  Stefan Herzinger

IPC分类号： H04B110

CPC分类号： H04L27/0014 ,  H03D3/002 ,  H03F3/45977 ,  H04L2027/0028 ,  H04L2027/0057

摘要： Offset voltage compensation in baseband in a radio receiver path is achieved by control and programming signals which are required in any case to set the desired states in the circuit module. For this purpose a sequencer is started which is integrated on the module and provides additional control signals that are defined in time, without any additional computation power being required from a separate baseband processor. The offset voltage compensation can be used in receiver and transceiver chips for portable mobile radios, for example for GSM or PCN/PCS.

公开(公告)号：US06768770B1

公开(公告)日：2004-07-27

申请号：US09556487

申请日：2000-04-21

申请人： Georg Lipperer ,  Peter Sehrig ,  Josef Schmal

发明人： Georg Lipperer ,  Peter Sehrig ,  Josef Schmal

IPC分类号： H04L516

CPC分类号： H04B1/44

摘要： A transceiver has bidirectional internal interface lines which can be connected to a baseband circuit. The transceiver is switchable by the baseband circuit between a transmission mode and a reception mode. The internal interface lines are connected to at least one quadrature modulator which in the transmission mode is connected to the interface lines, and to a quadrature demodulator which in the reception mode is connected to the interface lines. In the alternative, the demodulator is set to high impedance in the transmission mode and the modulator is set to high impedance in the reception mode.

摘要翻译： 收发器具有可连接到基带电路的双向内部接口线路。 收发器可以由传输模式和接收模式之间的基带电路切换。 内部接口线连接到至少一个正交调制器，其在传输模式下连接到接口线，并连接到正交解调器，其在接收模式下连接到接口线。 或者，在发送模式下将解调器设置为高阻抗，并且在接收模式下将调制器设置为高阻抗。

公开(公告)号：US07474071B2

公开(公告)日：2009-01-06

申请号：US11533026

申请日：2006-09-19

申请人： Benno Koeppl ,  Georg Lipperer

发明人： Benno Koeppl ,  Georg Lipperer

IPC分类号： B62D5/04 ,  H02P7/00

CPC分类号： B62D5/0484 ,  H02H7/0858

摘要： A motor is controlled by a motor control signal so that it reaches a target state, which is derived from sensor data sensed by a sensor. The motor can be put into a rest state at the occurrence of an error in simple and efficient manner by means of a safety means generating an alternative motor control signal at the occurrence of the error. Thus, the underlying idea is, instead of redundantly embodying components, to consciously accept a failure and integrate a corresponding fall-back solution into the overall concept. The failure is detected, and the motor is switched off in a user-manageable manner by a targeted shutdown.

摘要翻译： 电动机由电动机控制信号控制，使得其达到由传感器感测的传感器数据导出的目标状态。 在发生错误的情况下，通过安全装置产生替代的电动机控制信号，电动机可以以简单有效的方式发生错误而进入静止状态。 因此，基本思想是，而不是冗余地体现组件，有意识地接受失败，并将相应的后退解决方案整合到整体概念中。 检测到故障，并通过有针对性的关机，以用户可管理的方式关闭电机。

公开(公告)号：US06405024B1

公开(公告)日：2002-06-11

申请号：US09182278

申请日：1998-10-29

申请人： Edmund Goetz ,  Shen Feng ,  Markus Scholz ,  Georg Lipperer ,  Stefan Beyer

发明人： Edmund Goetz ,  Shen Feng ,  Markus Scholz ,  Georg Lipperer ,  Stefan Beyer

IPC分类号： H04B106

CPC分类号： H03L7/23 ,  H04B1/403

摘要： A frequency synthesizer for a radio terminal with which a dual-band and/or dual-mode switchover is possible in a simple manner. The frequency synthesizer has a double phase-locked loop with a high-frequency portion and an intermediate-frequency portion, each with one divider and one counter in a feedback branch. There is at least one memory for holding a plurality of divider values for the counter in the intermediate-frequency portion. The counter in the high-frequency portion is coupled to the memory in such a way that when a new divider value is written into the counter of the high-frequency portion, an associated divider value from the memory is written into the counter of the intermediate-frequency portion. In this way, the frequency generated by the intermediate-frequency divider is adapted to the frequency generated in the high-frequency portion in such a way that the requisite operating frequencies of each active mobile radio system are set automatically. In the same way, the dual-mode switchover can be carried out by coupling a further memory with further divider values for the counter of the high-frequency portion.

摘要翻译： 一种用于无线终端的频率合成器，可以以简单的方式进行双频和/或双模切换。 频率合成器具有双重锁相环，其具有高频部分和中频部分，每个在反馈分支中具有一个分频器和一个计数器。 存在至少一个存储器，用于在中频部分中保存用于计数器的多个除法器值。 高频部分中的计数器以这样的方式耦合到存储器，即当新的分频器值被写入高频部分的计数器时，来自存储器的相关联的分频值被写入中间级的计数器 频率部分。 以这种方式，中频分频器产生的频率适应于高频部分中产生的频率，使得每个有源移动无线电系统的必要操作频率被自动设置。 以同样的方式，可以通过将另外的存储器与用于高频部分的计数器的另外的分频器值进行耦合来执行双模切换。

公开(公告)号：US06535059B2

公开(公告)日：2003-03-18

申请号：US09767802

申请日：2001-01-22

申请人： Georg Lipperer ,  Stephan Weber

发明人： Georg Lipperer ,  Stephan Weber

IPC分类号： H03F130

CPC分类号： H03F1/301

摘要： A reference stage is provided in order to compensate for manufacturing tolerances, for example relating to the threshold voltage of a transistor. This reference stage has a transistor which is a physical equivalent of the transistor to be trimmed in a radio-frequency amplifier stage. In particular, this reference transistor has the same electrical direct current characteristics as the amplifier transistor. A reference voltage can be tapped off across a resistor on the reference stage and can be supplied to a control amplifier which uses this reference voltage to set the operating point of the radio-frequency amplifier transistor such that manufacturing tolerances are compensated for. Such radio-frequency power amplifiers are used, for example, as transmit amplifiers in mobile radios.

摘要翻译： 提供了参考级，以便补偿制造公差，例如与晶体管的阈值电压相关。 该参考级具有晶体管，其是在射频放大器级中待修整的晶体管的物理等效物。 特别地，该参考晶体管具有与放大器晶体管相同的电直流特性。 参考电压可以在参考电平上的电阻上分接，并且可以提供给使用该参考电压的控制放大器来设置射频放大器晶体管的工作点，从而补偿制造公差。 这种射频功率放大器例如用作移动无线电中的发射放大器。