公开(公告)号：US07164328B2

公开(公告)日：2007-01-16

申请号：US10426557

申请日：2003-04-30

申请人： Jiren Yuan ,  Yijun Zhou

发明人： Jiren Yuan ,  Yijun Zhou

IPC分类号： H03C1/00 ,  H03C3/00 ,  H04L27/36

CPC分类号： H03C1/547 ,  H03C1/36 ,  H04L27/36

摘要： Various embodiments of a direct digital amplitude modulator (DDAM) for modulating radio frequency (RF) or intermediate frequency (IF) or baseband signal with the invented interpolation technique are disclosed. The interpolation technique greatly reduces the amplitudes of alias signals without using an analog filter. The embodiments therefore are significant for various communication transmitters to achieve simple structure, good linearity and high power efficiency.

摘要翻译： 本发明公开了用于调制射频（RF）或中频（IF）或基带信号的直接数字幅度调制器（DDAM）的各种实施例。 内插技术大大降低了别名信号的幅度，而不使用模拟滤波器。 因此，这些实施例对于各种通信发射机是重要的，以实现简单的结构，良好的线性度和高功率效率。

公开(公告)号：US20060181352A1

公开(公告)日：2006-08-17

申请号：US11351929

申请日：2006-02-10

申请人： Thomas Kirchmeier

发明人： Thomas Kirchmeier

IPC分类号： H03G3/10

CPC分类号： H03C1/36

摘要： A method is performed for influencing the signal shape of an output signal of an RF power resonance amplifier and an RF excitation arrangement including an RF power resonance amplifier. A basic signal of a basic frequency is amplified and modulated with a modulation signal, and an output oscillating circuit of the RF power resonance amplifier is tuned to a frequency in the range of the basic frequency, and is excited with the basic signal during normal operation. At times that are or can be predetermined, the output oscillating circuit is driven with a driving signal that differs from the basic signal, for a time period that is or can be predetermined. This reduces the dying down time of the output oscillating circuit and increases the steepness of the output signal edges.

摘要翻译： 执行影响RF功率谐振放大器的输出信号的信号形状和包括RF功率共振放大器的RF激励装置的方法。 基本频率的基本信号用调制信号进行放大和调制，RF功率谐振放大器的输出振荡电路调谐到基本频率范围内的频率，并在正常工作期间用基本信号激发 。 在有或者可以预定的时刻，输出振荡电路用与基本信号不同的驱动信号驱动一段时间，该时间段是或可以预定的。 这减少了输出振荡电路的垂死时间并增加了输出信号边沿的陡度。

公开(公告)号：US20060040623A1

公开(公告)日：2006-02-23

申请号：US11198672

申请日：2005-08-05

申请人： Gunther Kraut ,  Bernd Adler ,  Grigory Itkin

发明人： Gunther Kraut ,  Bernd Adler ,  Grigory Itkin

IPC分类号： H04B1/02 ,  H04L27/04

CPC分类号： H04L27/361 ,  H03C1/36 ,  H03F3/3022

摘要： An amplitude modulator is provided, which has a first supply connection for supplying a supply potential and a second supply connection for supplying a ground potential. An amplifier stage with a push-pull output stage has a signal input for supplying a signal, and has a single-pole output for emitting a single-ended signal. In order to supply the push-pull output stage, the amplifier stage is connected in a supply path between the first and the second supply connection. A first controllable voltage source and a second controllable voltage source are also provided, whose control inputs are connected to a connection for control purposes by means of a differential modulation signal, and are connected between the amplifier stage and the first supply connection, or the amplifier stage and the second supply connection. Amplitude modulation is thus achieved by modulation of the supply voltage or of the supply current to the push-pull output stage.

摘要翻译： 提供了一种振幅调制器，其具有用于提供电源电位的第一电源连接和用于提供地电位的第二电源连接。 具有推挽输出级的放大器级具有用于提供信号的信号输入，并且具有用于发出单端信号的单极输出。 为了提供推挽输出级，放大器级连接在第一和第二电源连接之间的供电路径中。 还提供第一可控电压源和第二可控电压源，其控制输入通过差分调制信号连接到用于控制目的的连接，并连接在放大器级与第一电源连接或放大器 阶段和第二个供应连接。 因此，通过调制供电电压或推挽输出级的电源电流来实现幅度调制。

公开(公告)号：US07003048B1

公开(公告)日：2006-02-21

申请号：US09649678

申请日：2000-08-28

申请人： Thomas Eibel ,  Siegfried Arnold ,  Peter Thüringer

发明人： Thomas Eibel ,  Siegfried Arnold ,  Peter Thüringer

IPC分类号： H04L27/04

CPC分类号： H04L5/143 ,  H03C1/36

摘要： In a communication arrangement (1) provided for transmitting data (DA) to a transponder (2) which arrangement includes a data source (5) for delivering data (DA) and includes a carrier signal generator (6) for generating a carrier signal (CS) and includes modulation means (7) to which can be applied the data (DA) and the carrier signal (CS) and which modulation means are provided for modulating a carrier signal (CS) in accordance with the data (DA) and for delivering a modulated carrier signal (CSM) to transmitting means (8) having an input resistance (9), the modulation means (7) have a changeable output resistance (10) which forms a resistance network together with the input resistance (9) of the transmitting means (8), and resistance change means (25) for changing the output resistance (10) in accordance with the data (DA).

摘要翻译： 在用于向应答器（2）发送数据（DA）的通信装置（1）中，该装置包括用于传送数据（DA）的数据源（5），并且包括用于产生载波信号的载波信号发生器（6） CS），并且包括可以应用数据（DA）和载波信号（CS）的调制装置（7），并且提供调制装置以根据数据（DA）对载波信号（CS）进行调制，并且 将调制载波信号（CSM）传送到具有输入电阻（9）的发送装置（8），所述调制装置（7）具有与所述输入电阻（9）的输入电阻（9）形成电阻网络的可变输出电阻（10） 发送装置（8）和用于根据数据（DA）改变输出电阻（10）的电阻变化装置（25）。

公开(公告)号：US20060006955A1

公开(公告)日：2006-01-12

申请号：US11226562

申请日：2005-09-14

申请人： Shigeru Arisawa

发明人： Shigeru Arisawa

IPC分类号： H03C1/00

CPC分类号： G06K7/0008 ,  G06K19/0723 ,  H03C1/08 ,  H03C1/14 ,  H03C1/36 ,  H03F3/72 ,  H03F2200/327 ,  H03F2203/7215 ,  H03K7/02 ,  H04L27/04 ,  H04L27/06

摘要： In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data.

公开(公告)号：US20050218991A1

公开(公告)日：2005-10-06

申请号：US10508038

申请日：2003-03-18

申请人： John Birbeck

发明人： John Birbeck

IPC分类号： H03C1/36 ,  H03F1/02 ,  H03F1/30 ,  H03F3/04

CPC分类号： H03F3/19 ,  H03C1/36 ,  H03F1/0266 ,  H03F1/302 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/75

摘要： The bias circuit of the present invention can be configured for extremely stiff biasing for Class A circuits, which is solid under heavy RF input overdrive. Alternatively, the circuit may be configured for controlled self biasing for use in Class AB designs.

摘要翻译： 本发明的偏置电路可以被配置为对于在强RF输入过驱动下是固体的A类电路的极度偏置。 或者，电路可以被配置为用于AB类设计中的受控自偏压。

公开(公告)号：US20030057934A1

公开(公告)日：2003-03-27

申请号：US10208575

申请日：2002-07-29

申请人： Immersion Corporation

发明人： Kollin M. Tierling

IPC分类号： G01R023/16 ,  G01R027/02

CPC分类号： G06F3/016 ,  H03C1/36

摘要： An amplitude modulator circuit includes a reference oscillator and an envelope modulator coupled to the reference oscillator for receiving a reference signal. A microcontroller is coupled to the envelope modulator for providing an envelope signal to the envelope modulator and a low pass filter is coupled to the envelope modulator for receiving a modulated command from the envelope modulator. An inverter is coupled to the low pass filter for receiving a low passed envelope modulated signal from the low pass filter and a transducer or amplifier is coupled to the inverter and the low pass filter for receiving an inverted low passed signal and the low passed envelope modulated signal.

摘要翻译： 振幅调制器电路包括参考振荡器和耦合到参考振荡器的包络调制器，用于接收参考信号。 微控制器耦合到包络调制器，以向包络调制器提供包络信号，并且低通滤波器耦合到包络调制器，用于从包络调制器接收调制的指令。 反相器耦合到低通滤波器，用于从低通滤波器接收低通过的包络调制信号，并且换能器或放大器耦合到反相器和低通滤波器，用于接收反向低通信号，低通量包络调制 信号。

公开(公告)号：US20020072342A1

公开(公告)日：2002-06-13

申请号：US09962889

申请日：2001-09-25

发明人： Bruno Charrat

IPC分类号： H04B001/16

CPC分类号： H03C1/36

摘要： A method for modulating the amplitude of an antenna signal applied to an inductive-type antenna circuit by a control circuit having binary ports that can be set to high impedance and with a non-zero internal resistor. The signal providing the electric power supply of the antenna circuit is delivered by at least two ports of the control circuit, and the amplitude of the antenna signal is modulated by changing the output state of at least one of the ports. Particularly applied to contactless smart card readers.

摘要翻译： 一种用于通过具有可被设置为高阻抗的二进制端口和具有非零内部电阻器的控制电路来调制施加到感应型天线电路的天线信号的振幅的方法。 提供天线电路的电源的信号由控制电路的至少两个端口传送，并且通过改变至少一个端口的输出状态来调制天线信号的振幅。 特别适用于非接触式智能卡读卡器。

公开(公告)号：US06323739B1

公开(公告)日：2001-11-27

申请号：US09484474

申请日：2000-01-18

申请人： Joseph Andrews

发明人： Joseph Andrews

IPC分类号： H03B520

CPC分类号： H03L7/18 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03C1/36 ,  H03J2200/29 ,  H03L7/099 ,  H03L2207/06

摘要： A frequency oscillator tuning process at the manufacturing stage is replaced with an adjustment of a resonant circuit in the frequency oscillator during an operation of the oscillator. The adjustment utilizes a crystal oscillator, a frequency oscillator such as a voltage-controlled oscillator (VCO), and a trimmer in a phase-locked loop configuration to determine a correction voltage required for an untrimmed VCO to operate at a nominally specified frequency by adjusting an input tuning voltage for a resonant circuit.

摘要翻译： 在振荡器的操作期间，在制造阶段的频率振荡器调谐过程被频率振荡器中的谐振电路的调整所取代。 该调整使用晶体振荡器，诸如压控振荡器（VCO）的频率振荡器和锁相环配置中的微调器，以通过调整来确定未校准VCO在标称指定频率下操作所需的校正电压 用于谐振电路的输入调谐电压。

公开(公告)号：US5736906A

公开(公告)日：1998-04-07

申请号：US641270

申请日：1996-04-30

申请人： Herbert P. Jacobson

发明人： Herbert P. Jacobson

IPC分类号： H03C1/06 ,  H03C1/36 ,  H03F3/217 ,  H03F3/24

CPC分类号： H03F3/24 ,  H03C1/06 ,  H03C1/36 ,  H03F3/2178

摘要： The present invention relates to a power supply modulator for a radio transmitter having apportioned input impedance and buffered switching of power modules. A series arrangement of power supply modules, conventionally disposed in a diode cascade, includes individual inductors to apportion the input impedance of the switching power supplies. The switching sequence of the power supplies is controlled by a FIFO buffer, with the sequentially adjacent power supplies being disposed physically remote so that current transients and thermal loads are more uniformly distributed.