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1. 发明公开

EP2926452A4 LINEARIZATION CIRCUITS AND METHODS FOR MULTILEVEL POWER AMPLIFIER SYSTEMS 有权
标题翻译：线性化电路与方法多级功率放大器系统
公开(公告)号：EP2926452A4
公开(公告)日：2016-08-03
申请号：EP13858970
申请日：2013-11-14
申请人： ETA DEVICES INC
发明人： BRIFFA MARK A , DAWSON JOEL L , KOMONI KRENAR , PERREAULT DAVID J , UYAR OGUZHAN , DEROO JOHN E
IPC分类号： H03C1/62 , H04B1/04
CPC分类号： H03C1/62 , H03F1/02 , H03F1/3241 , H03F3/24 , H04B1/0475 , H04B2001/0425 , H04B2001/045

2. 发明公开

EP2963825A1 OSCILLATOR CIRCUITS AND METHOD TO COMPENSATE THE FREQUENCY PULLING 有权转让
标题翻译：维多利亚州VERFAHREN ZUR KOMPENSATION DES MITZIEHEFFEKTS
公开(公告)号：EP2963825A1
公开(公告)日：2016-01-06
申请号：EP15173752.5
申请日：2015-06-25
申请人： STMicroelectronics S.r.l.
发明人： Scuderi, Angelo , Calcagno, Antonino , Scaccianoce, Salvatore
IPC分类号： H03L7/00 , H04B1/04 , H03C1/62
CPC分类号： H03L7/02 , H03B2202/06 , H03C1/62 , H03L7/18 , H04B1/0475 , H04B1/38 , H04B7/00 , H04L25/4902
摘要： Oscillator circuit comprising a local oscillator (1) configured to generate a carrier signal (2) having a tunable frequency (f t ), a first modulator (SW1) and a power amplifier (PA) couple in cascade to said local oscillator (1) and configured to generate an output signal (V OUT ), the first modulator (SW1) configured to be activated from a first modulating signal (PT) having a first frequency (f1) defining alternatively states ON and states OFF of said first modulator (SW1), the oscillator circuit further comprising:
an estimator unit (14) configured to receive the carrier signal (2) during a time window (ΔTx) and to detect an estimated frequency variation (Δf) of said carrier signal (2) during the states ON and the states OFF of said first modulator (SW1),
a compensation unit (16) comprising a second modulator (SW2) and configured to generate a compensation signal (Vcom, Icom) proportional to the estimated frequency variation (Δf) and modulated with a second modulating frequency (f2), the second modulating frequency (f2) being substantially the same of the first modulating frequency (f1), the compensation signal (Vcom, Icom) being adapted to be added to a bias signal (V TUNE ,I BIAS ) of the local oscillator (1) to tune the tunable frequency (f t ).
摘要翻译：振荡器电路包括被配置为产生具有可调频率（ft）的载波信号（2）的本地振荡器（1），与本地振荡器（1）级联耦合的第一调制器（SW1）和功率放大器（PA），以及被配置为产生输出信号（V OUT），所述第一调制器（SW1）被配置为从具有第一频率（f1）的第一调制信号（PT）激活，所述第一频率（f1）定义为所述第一调制器（SW1）的交替状态ON和状态OFF，所述振荡器电路还包括：估计器单元，被配置为在时间窗口（“Tx”）期间接收所述载波信号（2），并且在所述时间窗口（“Tx”）期间检测所述载波信号（2）的估计频率变化状态ON和所述第一调制器（SW1）的状态OFF;补偿单元（16），包括第二调制器（SW2），并被配置为产生与估计的频率变化（f）成比例的补偿信号（Vcom，Icom）和用第二调制频率进行调制 cy（f2），所述第二调制频率（f2）与所述第一调制频率（f1）基本相同，所述补偿信号（Vcom，Icom）适于添加到偏置信号（V TUNE，I BIAS）本地振荡器（1）调谐可调谐频率（ft）。

3. 发明公开

EP1125359A1 METHOD AND SYSTEM FOR DOWN-CONVERTING AN ELECTROMAGNETIC SIGNAL 有权
标题翻译：方法和系统降频转换的电磁信号
公开(公告)号：EP1125359A1
公开(公告)日：2001-08-22
申请号：EP99954996.7
申请日：1999-10-20
申请人： Parker Vision, Inc.
发明人： SORRELLS, David, F. , BULTMAN, Michael, J. , COOK, Robert, W. , LOOKE, Richard, C. , MOSES, Charley, D., Jr. , RAWLINS, Gregory, S. , RAWLINS, Michael, W.
IPC分类号： H03D3/00 , H03D7/00
CPC分类号： H04B7/12 , H03C1/62 , H03D7/00
摘要： Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down converting an EM signal by under-sampling the EM signal at an aliasing rate, and down-converting an EM signal by transferring energy from the EM signal at the aliasing rate. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a demodulated baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.

4. 发明公开

EP0491806A1 CARRIER MODULATION WITHOUT SIDEBANDS 失效
标题翻译：载波调制无副作用带。
公开(公告)号：EP0491806A1
公开(公告)日：1992-07-01
申请号：EP90914008.0
申请日：1990-09-11
申请人： ZSB, INC.
发明人： ANDERSON, Terry, M.
IPC分类号： H03C1 , H04L27
CPC分类号： H04L27/04 , H03C1/60 , H03C1/62
摘要： On a mis au point un procédé et un appareil de communications de modulation d'amplitude de bande latérale zéro. Plusieurs représentations numériques d'ondes sinusoïdales ayant des amplitudes différentes mais des périodes identiques sont contenues dans une mémoire morte. La sélection entre la représentation numérique d'ondes sinusoïdales d'amplitudes différentes est basée sur un signal de modulation numérique. La commutation entre les représentations numériques d'ondes sinusoïdales se trouvant dans la mémoire morte n'a lieu que lors du passage par zéro de l'onde sinusoïdale. Les représentations numériques des ondes sinusoïdales sont produites dans un convertisseur numérique-analogique, afin de produire un signal de porteuse modulé en amplitude HF sans bandes latérales. Du fait que la commutation d'amplitude a lieu lorsque la porteuse passe par zéro, il n'en résulte aucune information de bande latérale supérieure ou de bande latérale inférieure. La fréquence de la porteuse sans bandes latérales est extrêmement étroite, ce qui permet d'espacer étroitement des porteuses multiples contenant des informations de haute qualité dans le spectre de communications disponible. On obtient une augmentation multiple de l'utilisation disponible de la largeur de bande de communications.

5. 发明授权

EP0162278B1 Verfahren zur Trägersteuerung eines amplitudenmodulierten Senders und Schaltungsanordnung zur Durchführung des Verfahrens 失效
标题翻译：用于控制放大器调制发射机的载波的方法和实现方法的电路布置
公开(公告)号：EP0162278B1
公开(公告)日：1989-08-23
申请号：EP85104556.7
申请日：1985-04-15
申请人： BBC Brown Boveri AG
发明人： Furrer, Andreas
IPC分类号： H03C1/62
CPC分类号： H03C1/62

6. 发明授权

EP0137121B1 Amplitudenmodulierter Sender mit Steuerung des Trägerwertes 失效
标题翻译：具有载波电平控制的AMPLITUDE调制发射机
公开(公告)号：EP0137121B1
公开(公告)日：1989-03-08
申请号：EP84107539.3
申请日：1984-06-29
申请人： BBC Brown Boveri AG
发明人： Kyrian, Bohumil
IPC分类号： H03C1/62
CPC分类号： H03C1/62

7. 发明授权

EP1935089B1 SYSTEMS, METHODS AND DEVICES FOR DUAL CLOSED LOOP MODULATION CONTROLLER FOR NONLINEAR RF AMPLIFIER 有权
标题翻译：系统，方法和装置一个双闭环调制控制器的非线性射频放大器
公开(公告)号：EP1935089B1
公开(公告)日：2009-01-07
申请号：EP07760203.5
申请日：2007-04-05
申请人： ViaSat, Inc.
发明人： LANG, David, R.
IPC分类号： H03C1/54 , H03F1/34 , H03F3/189 , H04L27/08
CPC分类号： H03C1/62 , H03F3/189 , H04B1/04 , H04L27/08
摘要： In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope amplitude control system comprises: a RF amplifier, wherein the RF amplifier is associated with a feedback device that is configured to create a first feedback signal representing the power in an RF output signal; a transmit waveform generator configured to generate a reference waveform signal; an adaptive table waveform generator configured to compare the reference waveform signal and the first feedback signal and to create a second feedback signal based on that comparison; and a loop filter configured to combine the reference waveform signal, the first feedback signal, and the second feedback signal to form an amplifier control signal, wherein the amplifier control signal is provided to the RF amplifier to adjust the RF output signal to conform to a specified RF envelope.

8. 发明公开

EP1878121A2 A DIGITAL AMPLITUDE MODULATION TRANSMITTER WITH PULSE WIDTH MODULATING RF DRIVE 有权
标题翻译：数字幅度调制发射脉冲宽度调制RF控制
公开(公告)号：EP1878121A2
公开(公告)日：2008-01-16
申请号：EP06748514.4
申请日：2006-03-20
申请人： Harris Corporation
发明人： LUU, Ky Thoai
IPC分类号： H04B1/02 , H03C1/52
CPC分类号： H03C1/36 , H03C1/00 , H03C1/62 , H04B1/04
摘要： A digital amplitude modulation (AM) transmitter with pulse width modulating RF drive is presented. A plurality of RF amplifiers, each, when turned on, amplifies an applied RF drive signal by the same amount to provide a unit step RF output. An encoder supplies turn-on signals to turn on a number of the RF amplifiers wherein the number varies as a function of the value of an applied audio signal. The width of the unit step RF output is varied as a function of the number of the RF amplifiers that are turned on.

9. 发明公开

EP1665462A2 AMPLIFIER POWER CONTROL IN FREQUENCY HOPPING APPLICATIONS AND METHODS 有权转让
标题翻译： AMP电源控制跳频应用程序和过程
公开(公告)号：EP1665462A2
公开(公告)日：2006-06-07
申请号：EP04783281.1
申请日：2004-09-07
申请人： Motorola, Inc., A Corporation of the State of Delaware
发明人： SCHUMACHER, Lawrence R. , NATARAJAN, Vimalkaushik
IPC分类号： H01Q11/12 , H03C1/62 , H04B17/00 , H04B1/04 , H04K1/02
CPC分类号： H04W52/52 , H03C1/62 , H03F1/3223 , H03F3/24 , H04B2001/0441
摘要： A method in an amplifier, for example, a power amplifier in a wireless transmitter, including monitoring (310) a characteristic of the amplifier during a first active interval of the first set of active intervals, storing (320) the amplifier characteristic monitored during the first active interval of the first set of active intervals, correcting (340) an open-loop control signal to the amplifier based on the stored amplifier characteristic monitored during the first active interval of the first set of active intervals, and providing (350) the corrected control signal during a second active interval of the set of first active intervals subsequent to the first active interval of the set of first active intervals.

10. 发明公开

EP1110303A1 SYSTEM AND METHOD FOR FREQUENCY UP-CONVERSION 有权
标题翻译：系统和方法AUFWARTSMISCHUNG
公开(公告)号：EP1110303A1
公开(公告)日：2001-06-27
申请号：EP99954941.3
申请日：1999-10-18
申请人： Parkervision, Inc.
发明人： SORRELLS, David, F. , BULTMAN, Michael, J. , COOK, Robert, W. , LOOKE, Richard, C. , MOSES, Charley, D., Jr. , RAWLINS, Gregory, S. , RAWLINS, Michael, W.
IPC分类号： H03C1/62
CPC分类号： H03D7/00 , H03C1/62 , H04B7/12
摘要： A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The upconversion is accomplished by controlling a switch with an oscillating signal, the frequency of the oscillating signal being selected as a sub-harmonic of the desired output frequency. When the invention is being used as a frequency or phase reference, the oscillating signal is not modulated, and controls a switch that is connected to a bias signal. When the invention is being used in the frequency modulation (FM) or phase modulation (PM) implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate the bias signal. In the amplitude modulation implementation (AM), the oscillating signal is not modulated, but rather causes the switch to gate a reference signal that is substantially equal to or proportional to the information signal. In the FM and PM implementations, the signal that is output from the switch is modulated substantially the same as the modulated oscillating signal. In the AM implementation, the signal that is output from the switch has an amplitude that is a function of the information signal. In both embodiments, the output of the switch is filtered, and the desired harmonic is output.

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