-
公开(公告)号：EP2908554B1
公开(公告)日：2017-09-06
申请号：EP15155345.0
申请日：2012-03-08
申请人： NEC Corporation
发明人： Onishi, Yasuharu , Kuroda, Jun , Komoda, Motoyoshi , Kishinami, Yuichiro , Satou, Shigeo , Murata, Yukio , Kawashima, Nobuhiro , Uchikawa, Tatsuya
CPC分类号： H03B28/00 , H04R17/00 , H04R2217/03 , H04R2499/11
-
2.发明公开RADIO FREQUENCY SIGNAL TRANSCEIVER, COHERENT RADAR RECEIVER AND METHOD OF PROCESSING RADIO FREQUENCY SIGNALS 有权射频信号发送方接收方进行处理射频信号的相干雷达接收器和方法
公开(公告)号：EP2845332A1
公开(公告)日：2015-03-11
申请号：EP12718648.4
申请日：2012-04-30
发明人： GHELFI, Paolo , BOGONI, Antonella
CPC分类号： H04B10/40 , G02F2/002 , G02F2001/212 , H04B10/2575 , H04B10/556 , H04B10/64 , H04B10/90 , H04B2210/006 , H04L7/0075
摘要： An RF signal transceiver comprising a mode-locked laser to output an optical signal having a plurality of phase-locked modes, an optical splitter to power split the optical signal into a transmitter optical signal and a receiver optical signal; a transmitter apparatus to receive the transmitter optical signal and comprising an optical filter to select two of the modes, an optical modulator to modulate a part of the transmitter optical signal to form at least one phase modulated optical signal, and a photodetector to heterodyne the phase modulated optical signal with one of the modes without a corresponding phase modulation to form an RF signal for transmission; and a receiver apparatus arranged to receive an RF signal and the receiver optical signal and comprising an optical modulator to modulate the receiver optical signal with the received RF signal; and an optical to electrical signal conversion apparatus to convert the modulated receiver optical signal into a corresponding electrical signal.
摘要翻译： RF信号收发机，包括一个锁模激光输出具有锁相模式的多个光学信号，光分路器到功率分裂光信号到光发射器信号和接收器的光信号; 一个发送装置，以接收光学滤波器的所述光发射器的信号，并且包括选择两个在光学调制器的模式来调制所述光发射器信号，以形成至少一个相位调制的光信号的一部分，以及光检测器，用于外差相位 调制的光信号与没有对应的相位调制，以形成RF信号的用于传输的模式中的一个; 和接收器装置被布置成接收在RF信号和所述接收器的光信号和光调制器，其包括以调节与所接收的RF信号的光信号接收器; 和光 - 电信号转换装置调制的光信号接收器转换为相应的电信号。
-
3.发明公开D/A CONVERSION DEVICE, PERIPHERAL DEVICE, AND PLC 有权D / A-UMWANDLUNGSVORRICHTUNG，外围VORRICHTUNG UND PROGRAMMIBIBOR STEUERUNG
公开(公告)号：EP2624459A1
公开(公告)日：2013-08-07
申请号：EP10857774.3
申请日：2010-09-28
发明人： ONISHI, Atsuko , KUBOTA, Yoshiyuki
CPC分类号： H03M1/66 , G06F1/0321 , G06F13/4059
摘要： A D/A converter according to the present invention includes a wave-form data-array memory means for memorizing a wave-form data array configured of a plurality of digital values, a wave-form output-format data memory means for memorizing wave-form output-format data designating a wave-form output period, a digital value output means for sequentially reading out the digital values for each wave-form output period from the wave-form data-array memory means and outputting the values, and a D/A conversion means for converting the digital values outputted from the digital value output means into analog-data values.
摘要翻译： 根据本发明的AD / A转换器包括用于存储由多个数字值构成的波形数据阵列的波形数据阵列存储装置，用于存储波形的波形输出格式数据存储装置 指定波形输出周期的输出格式数据，数字值输出装置，用于从波形数据阵列存储装置顺序地读出每个波形输出周期的数字值并输出该值;以及D / A转换装置，用于将从数字值输出装置输出的数字值转换为模拟数据值。
-
公开(公告)号：EP2372902A3
公开(公告)日：2013-08-07
申请号：EP11154102.5
申请日：2011-02-11
发明人： Mu, Fenghao , Sjöland, Henrik
CPC分类号： H03B28/00 , H03F1/3247
摘要： A clock generator circuit may generate a target clock signal and may include a pattern generator to generate a pre-distorted version of a modulation signal from patterns stored by the pattern generator. An up-converter may up-convert the pre-distorted version of the modulation signal and a radio frequency lock oscillator signal to obtain an RF clock signal having a desired frequency tone. A tone detection circuit may receive the RF clock signal and detect a presence of unwanted tones. A controller may write the patterns corresponding to the pre-distorted version of the modulation signal to the pattern generator based on the detected unwanted tones in the RF clock signal.
-
5.发明公开Dispositif d'émission/réception d'ondes radar 审中-公开Vorrichtung zum Senden / Empfangen von Radarwellen
公开(公告)号：EP2512028A1
公开(公告)日：2012-10-17
申请号：EP11306446.3
申请日：2011-11-08
CPC分类号： G01S13/32 , G01S7/35 , H03B5/1215 , H03B5/1218 , H03B5/1231 , H03B5/1234 , H03B5/1243 , H03B2200/0008 , H03B2200/0066 , H03B2202/044 , H03B2202/076
摘要： Dispositif (1) d'émission/réception d'ondes radar, en particulier de radars à modulation de fréquence:
■ un circuit (2) de génération d'ondes radar, comportant un oscillateur commandé en tension (6) couplé à un circulateur (8) lui-même relié à une antenne d'émission/réception (9) ;
■ un circuit de détection (3) comportant un premier mélangeur (15) alimenté par ledit circulateur (8) et ledit oscillateur commandé en tension (6),
et dans lequel l'oscillateur commandé en tension (6) comporte une entrée d'injection (56) d'un signal élaboré par un circuit complémentaire (30), ledit circuit complémentaire (30) étant alimenté en entrée par le signal de sortie (10) de l'oscillateur commandé en tension (6), et comportant un second mélangeur (36) alimenté par deux signaux (33,38) élaborés à partir du signal de sortie (10) de l'oscillateur commandé en tension (6).摘要翻译： 装置（1）具有包括耦合到循环器（8）的压控振荡器（6）的雷达波生成电路（2）。 检测电路（3）包括由循环器和振荡器馈送的混频器（15）。 振荡器包括用于注入由附加电路（30）产生的信号的输入端（56）。 附加电路的输入由振荡器的输出信号（10）馈送，并且包括由基于振荡器的输出信号产生的两个信号（33,38）馈送的另一个混频器（36）。
-
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
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.
-
7.发明公开RF clock generator with spurious tone cancellation 有权Hochfrequenz-Taktgenerator mitStörtonunterdrückung
公开(公告)号：EP2372902A2
公开(公告)日：2011-10-05
申请号：EP11154102.5
申请日：2011-02-11
发明人： Mu, Fenghao , Sjöland, Henrik
IPC分类号： H03B28/00
CPC分类号： H03B28/00 , H03F1/3247
摘要： A clock generator circuit may generate a target clock signal and may include a pattern generator to generate a pre-distorted version of a modulation signal from patterns stored by the pattern generator. An up-converter may up-convert the pre-distorted version of the modulation signal and a radio frequency lock oscillator signal to obtain an RF clock signal having a desired frequency tone. A tone detection circuit may receive the RF clock signal and detect a presence of unwanted tones. A controller may write the patterns corresponding to the pre-distorted version of the modulation signal to the pattern generator based on the detected unwanted tones in the RF clock signal.
摘要翻译： 时钟发生器电路可以产生目标时钟信号，并且可以包括模式发生器，以从图案发生器存储的模式生成调制信号的预失真版本。 上变频器可以上变频调制信号的预失真版本和射频锁定振荡器信号以获得具有期望频率音调的RF时钟信号。 音调检测电路可以接收RF时钟信号并检测不需要的音调的存在。 控制器可以基于RF时钟信号中检测到的不需要的音调将与调制信号的预失真版本对应的模式写入模式发生器。
-
公开(公告)号：EP1897215B1
公开(公告)日：2009-12-30
申请号：EP06765825.2
申请日：2006-06-22
申请人： NXP B.V.
发明人： TOURRET, Jean-Robert
CPC分类号： H03B28/00
-
9.发明公开
公开(公告)号：EP1645027A1
公开(公告)日：2006-04-12
申请号：EP04777838.6
申请日：2004-07-09
申请人： RAYTHEON COMPANY
IPC分类号： H03B28/00
CPC分类号： G06F1/0335
摘要： A waveform generator digitally synthesizes a waveform having a plurality of successive portions that can each be as short as one mono-cycle of the waveform, or a part of one mono-cycle. The waveform generator changes at least one of a frequency, a phase and an amplitude of the waveform between each successive pair of the portions thereof. A method includes digitally synthesizing a waveform having a plurality of successive portions that can each be as short as one mono-cycle of the waveform, or a part of one mono-cycle, including changing at least one of a frequency, a phase and an amplitude of the waveform between each successive pair of the portions thereof.
-
-
-
-
-
-
-
-
-
搜索结果
131 条记录 (耗时 0.019 秒)
