公开(公告)号：EP1878121B1

公开(公告)日：2013-09-25

申请号：EP06748514.4

申请日：2006-03-20

申请人： HBC Solutions, Inc.

发明人： LUU, Ky Thoai

IPC分类号： H03C1/00 ,  H03C1/62 ,  H03C1/36 ,  H04B1/04

CPC分类号： H03C1/36 ,  H03C1/00 ,  H03C1/62 ,  H04B1/04

公开(公告)号：EP1378055A1

公开(公告)日：2004-01-07

申请号：EP02757769.1

申请日：2002-02-19

申请人： Cubic Corporation ,  Busch-Sorensen, Thomas

发明人： BUSCH-SORENSEN, Thomas

IPC分类号： H03B28/00 ,  H03K19/003 ,  H03C1/62

CPC分类号： G06K19/0701 ,  G06K7/0008 ,  H03B28/00 ,  H03C1/36 ,  H03C1/62 ,  H03K5/14 ,  H03K7/02

摘要： An RF power oscillator for contactless card antennas shapes a carrier signal at the operating frequency utilizing a delay circuit having a number of taps for delaying the carrier signal by different lengths of time. The delayed signals are input into a buffer and output through resistors to a node coupled to the antenna. The resulting waveform for a square wave input signal, and equal-length delay taps, is a trapezoidal wave output. Any input wave form can be shaped in a variety of ways depending upon the combinations of delay taps used. Since the buffer drivers for each delayed wave switch state at slightly different times, the amplitude and bandwidth of emitted electromagnetic interference (EMI) is reduced for the transmission circuit.

公开(公告)号：EP1248353A2

公开(公告)日：2002-10-09

申请号：EP02001048.4

申请日：2002-01-21

申请人： Eni Technology, Inc.

发明人： Nasman, Kevin P. ,  Vona, Daniel J., Jr. ,  Radomski, Aaron T. ,  Pulhamus, William R., Jr.

IPC分类号： H02M3/157

CPC分类号： H01J37/32146 ,  H01J37/32082 ,  H01J37/32174 ,  H02M2001/0012 ,  H03C1/36 ,  H05H1/46

摘要： A method of controlling an output of a generator is provided. The output provides an output signal having a settling time to a load having an impedance. The settling time of the output signal is determined. The output signal is amplitude modulated with a modulation waveform. A sense signal is generated that is representative of the modulated output signal. The sense signal is sampled at a sampling time based upon the settling time of the output signal. A digital representation of the sampled sense signal is generated. The amplitude modulation of the output is controlled based upon the digital representation of the sampled sense signal.

摘要翻译： 等离子体发生器（10）向等离子体处理系统提供功率输出（12），并且控制器（14）产生控制信号和处理，监测和故障信号，而缓冲器（18）产生对应于控制信号的缓冲驱动信号 驱动调制器（20），将未过滤的输出传递到过滤器（24）。 检测器（26）产生与由脉冲控制器（28）使用的功率输出的特性对应的信号，以产生控制信号。 包括用于控制发电机输出的方法的独立权利要求。

公开(公告)号：EP0727108A1

公开(公告)日：1996-08-21

申请号：EP94927986.0

申请日：1994-09-02

申请人： CROWN INTERNATIONAL INC.

发明人： JACOBSON, Herbert, P.

IPC分类号： H03C1 ,  H03F3 ,  H04B1

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

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.

公开(公告)号：EP1929625B1

公开(公告)日：2015-01-07

申请号：EP06793079.2

申请日：2006-08-30

申请人： THALES

发明人： LETEMPLIER, Alain

IPC分类号： H03C1/36

CPC分类号： H03C1/36

公开(公告)号：EP1878121A4

公开(公告)日：2012-08-22

申请号：EP06748514

申请日：2006-03-20

申请人： HARRIS CORP

发明人： LUU KY THOAI

IPC分类号： H03C1/00 ,  H03C1/36 ,  H03C1/62 ,  H04B1/04

CPC分类号： H03C1/36 ,  H03C1/00 ,  H03C1/62 ,  H04B1/04

公开(公告)号：EP1378055B1

公开(公告)日：2012-04-11

申请号：EP02757769.1

申请日：2002-02-19

申请人： Cubic Corporation ,  Busch-Sorensen, Thomas

发明人： BUSCH-SORENSEN, Thomas

IPC分类号： G06K7/00 ,  H03C1/36 ,  H03K5/14 ,  H03K7/02 ,  H03C1/62 ,  H03B28/00

CPC分类号： G06K19/0701 ,  G06K7/0008 ,  H03B28/00 ,  H03C1/36 ,  H03C1/62 ,  H03K5/14 ,  H03K7/02

摘要： An RF power oscillator for contactless card antennas shapes a carrier signal at the operating frequency utilizing a delay circuit having a number of taps for delaying the carrier signal by different lengths of time. The delayed signals are input into a buffer and output through resistors to a node coupled to the antenna. The resulting waveform for a square wave input signal, and equal-length delay taps, is a trapezoidal wave output. Any input wave form can be shaped in a variety of ways depending upon the combinations of delay taps used. Since the buffer drivers for each delayed wave switch state at slightly different times, the amplitude and bandwidth of emitted electromagnetic interference (EMI) is reduced for the transmission circuit.

公开(公告)号：EP2056447A2

公开(公告)日：2009-05-06

申请号：EP08011803.7

申请日：2008-06-30

申请人： Icom Incorporated

发明人： Matsuo, Shin-ichi ,  Iwata, Hirokazu ,  Kinugawa, Fuminori

IPC分类号： H03C1/06

CPC分类号： H03C1/36

摘要： An AM (Amplitude-Modulated) transmitter (1) capable of improving modulation distortion is provided. An adder (20) adds a modulation signal to a pre-set power reference signal. An APC (Automatic Power Control) amplifier (21) compares a level of a detecting signal outputted by the LPF (Low Pass Filter) (14) with a level of an adder signal. The APC amplifier (21), based on the comparison result, generates a gain controlling signal that makes a difference between a level of the detecting signal and level of the signal approach zero and feeds the gain controlling signal to a power amplifier (13). The power amplifier (13) modulates the signal outputted from the amplifier by the gain controlling signal and power-amplifies the modulated signal according to a level of the gain controlling signal. Since the APC amplifier (21) feeds the gain controlling signal to the power amplifier (13), a modulation degree does not depend on a nonlinear distortion characteristic of the power amplifier.

摘要翻译： 提供能够改善调制失真的AM（调幅调制）发射机（1）。 加法器（20）将调制信号与预设的功率参考信号相加。 APC（自动功率控制）放大器（21）将由LPF（低通滤波器）（14）输出的检测信号的电平与加法器信号的电平进行比较。 基于比较结果的APC放大器（21）产生增益控制信号，该增益控制信号使得检测信号的电平和信号的电平接近零之间的差，并将增益控制信号馈送到功率放大器（13）。 功率放大器（13）通过增益控制信号调制从放大器输出的信号，并根据增益控制信号的电平对调制信号进行功率放大。 由于APC放大器（21）将增益控制信号馈送到功率放大器（13），调制度不取决于功率放大器的非线性失真特性。

公开(公告)号：EP1388932B1

公开(公告)日：2008-08-06

申请号：EP03077310.5

申请日：2003-07-22

申请人： N.V. Nederlandsche Apparatenfabriek NEDAP

发明人： Fockens, Tallienco Wieand Harm

IPC分类号： H03C1/36

CPC分类号： H03C1/36 ,  G06K7/0008

公开(公告)号：EP1125358B1

公开(公告)日：2007-04-11

申请号：EP00949486.5

申请日：2000-08-14

申请人： Koninklijke Philips Electronics N.V.

发明人： EIBEL, Thomas ,  ARNOLD, Siegfried ,  THÜRINGER, Peter

IPC分类号： H03C1/36

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).