| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Carrier wave control amplitude modulation transmitter | JP16665384 | 1984-08-10 | JPS6054506A | 1985-03-29 | KIRIAN BOOUMIRU |
| 22 | 주파수 호핑 애플리케이션 및 방법에서의 증폭기 전력 제어 | KR1020067005568 | 2004-09-07 | KR101119871B1 | 2012-03-13 | 슈머처,로렌스알.; 나타라잔,비말코쉬크 |
| 증폭기, 예를 들면 무선 전송기에서의 전력 증폭기에서의 방법은, 제1 액티브 인터벌 세트의 제1 액티브 인터벌 동안 증폭기의 특성을 모니터링하는 단계(310)와, 제1 액티브 인터벌 세트의 제1 액티브 인터벌 동안 모니터링되는 증폭기 특성을 저장하는 단계(320)와, 제1 액티브 인터벌 세트의 제1 액티브 인터벌 동안 모니터링되는 저장된 증폭기 특성에 기초하여 증폭기에 대해 개방 루프 제어 신호를 정정하는 단계(340)와, 제1 액티브 인터벌 세트의 제1 액티브 인터벌에 후속하는 제1 액티브 인터벌 세트의 제2 액티브 인터벌 동안 정정된 제어 신호를 제공하는 단계(350)를 포함한다. 증폭기, 액티브 인터벌, 증폭기 특성, 개방 루프 제어 신호 | ||||||
| 23 | 주파수 호핑 애플리케이션 및 방법에서의 증폭기 전력 제어 | KR1020067005568 | 2004-09-07 | KR1020060085624A | 2006-07-27 | 슈머처,로렌스알.; 나타라잔,비말코쉬크 |
| 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. | ||||||
| 24 | 펄스 진폭 변조에서 전압 마진을 증가시키는 방법 및 장치 | KR1020070065656 | 2007-06-29 | KR1020090001356A | 2009-01-08 | 신성철; 최훈대 |
| The method and apparatus for improving the voltage margin of PAM is provided to increase the voltage margin in the comparison process of the signal transmitted with the reference voltage by changing the common-mode level. The input data driving part(110) comprises the zero bit processing unit(MN1 and MN2) and first bit processing unit (MN3 and MN4), and the first current generator (MN5) and the second current source(MN6). The current applied in the first current generator is supplied to the first load (R1) or the second rod(R2) by the zero bit processing unit. The common-mode permutation(120) comprises the third load(R3), the fourth load(R4), and the third current circle(MN11) and common-mode controller. The common-mode controller comprises first output common-mode controller(MN7 and MN8) and second output common-mode controller (MN9 and MN10). | ||||||
| 25 | 전자기 신호를 하향 변환하기 위한 방법 및 시스템 | KR1020047017719 | 1999-10-20 | KR100556637B1 | 2006-03-03 | 소렐스,데이비드,에프.; 불트맨,마이클,제이.; 쿡,로버트,더블유.; 룩,리차드,씨.; 모세,찰리,디.; 로린스,그레고리,에스.; 로린스,마이클,더블유 |
| 여기에서는 전자기(EM) 신호를 에일리어싱하여 EM 신호를 하향 변환(down-converting)하기 위한 방법, 시스템, 그리고 장치를 기술한다. 간략히 말하면, 위와 같은 방법, 시스템, 그리고 장치는 EM 신호와 에일리어싱 레이트를 가지는 에일리어싱 신호를 수신하여 동작한다. EM 신호를 하향 변환하기 위해서 EM 신호는 에일리어싱 신호에 따라 에일리어싱된다. 여기서 사용하는 에일리어싱이라는 용어는 EM 신호를 언더샘플링(under-sampling)하여 EM 신호를 하향 변환하는 것과 에너지를 EM 신호로부터 에일리어싱 레이트로 전송하여 EM 신호를 하향 변환하는 것을 모두에 사용한다. 실시예에서, EM 신호는 중간주파수 EM 신호로 하향 변환된다. 또 다른 실시예에서, EM 신호는 복조된 기저대역 정보 신호로 하향 변환된다. 또 다른 실시예에서, EM 신호는 주파수 변조 신호이고, 이는 위상 변조(PM) 신호 또는 진폭 변조(AM) 신호와 같은 비-FM 신호로 하향 변환된다. 전자기 파, 에일리어싱, 하향 변환, 변조, 복조, 변조 방식 변환 | ||||||
| 26 | 펄스폭변조 ＲＦ 구동을 갖춘 디지털 진폭변조 송신기 | KR1020077026094 | 2006-03-20 | KR1020070119084A | 2007-12-18 | 루,키토아이 |
| 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. | ||||||
| 27 | 전자기 신호를 하향 변환하기 위한 방법 및 시스템 | KR1020047017719 | 1999-10-20 | KR1020040111576A | 2004-12-31 | 소렐스,데이비드,에프.; 불트맨,마이클,제이.; 쿡,로버트,더블유.; 룩,리차드,씨.; 모세,찰리,디.; 로린스,그레고리,에스.; 로린스,마이클,더블유 |
| 여기에서는 전자기(EM) 신호를 에일리어싱하여 EM 신호를 하향 변환(down-converting)하기 위한 방법, 시스템, 그리고 장치를 기술한다. 간략히 말하면, 위와 같은 방법, 시스템, 그리고 장치는 EM 신호와 에일리어싱 레이트를 가지는 에일리어싱 신호를 수신하여 동작한다. EM 신호를 하향 변환하기 위해서 EM 신호는 에일리어싱 신호에 따라 에일리어싱된다. 여기서 사용하는 에일리어싱이라는 용어는 EM 신호를 언더샘플링(under-sampling)하여 EM 신호를 하향 변환하는 것과 에너지를 EM 신호로부터 에일리어싱 레이트로 전송하여 EM 신호를 하향 변환하는 것을 모두에 사용한다. 실시예에서, EM 신호는 중간주파수 EM 신호로 하향 변환된다. 또 다른 실시예에서, EM 신호는 복조된 기저대역 정보 신호로 하향 변환된다. 또 다른 실시예에서, EM 신호는 주파수 변조 신호이고, 이는 위상 변조(PM) 신호 또는 진폭 변조(AM) 신호와 같은 비-FM 신호로 하향 변환된다. | ||||||
| 28 | LINEARIZATION CIRCUITS AND METHODS FOR MULTILEVEL POWER AMPLIFIER SYSTEMS | EP13858970 | 2013-11-14 | EP2926452A4 | 2016-08-03 | BRIFFA MARK A; DAWSON JOEL L; KOMONI KRENAR; PERREAULT DAVID J; UYAR OGUZHAN; DEROO JOHN E |
| Circuits and methods for achieving high linearity, high efficiency power amplifiers are described. In some embodiments, switched-state RF power amplifier systems that employ digital predistortion (DPD) and pulse cancellation are provided. | ||||||
| 29 | A DIGITAL AMPLITUDE MODULATION TRANSMITTER WITH PULSE WIDTH MODULATING RF DRIVE | EP06748514.4 | 2006-03-20 | EP1878121B1 | 2013-09-25 | LUU, Ky Thoai |
| 30 | Systems, methods and devices for dual closed loop modulation controller for non-linear RF amplifier | EP08173005.3 | 2007-04-05 | EP2051371A1 | 2009-04-22 | Lang, David. R |
The disclosed RF envelope amplitude control system comprises: a RF amplifier (430), wherein the RF amplifier is associated with a feedback device (435,500) that is configured to create a first feedback signal (509) representing the power in an RF output signal (440); a transmit waveform generator (100) configured to generate a reference waveform signal (125); an adaptive table waveform generator (200) configured to compare the reference waveform signal and the first feedback signal and to create a second feedback signal (335) based on that comparison; and a loop filter (300) configured to combine the reference waveform signal, the first feedback signal, and the second feedback signal to form an amplifier control signal (304), wherein the amplifier control signal is provided to the RF amplifier to adjust the RF output signal to conform to a specified RF envelope.
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| 31 | SYSTEMS, METHODS AND DEVICES FOR DUAL CLOSED LOOP MODULATION CONTROLLER FOR NONLINEAR RF AMPLIFIER | EP07760203.5 | 2007-04-05 | EP1935089B1 | 2009-01-07 | LANG, David, R. |
| 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. | ||||||
| 32 | SYSTEMS, METHODS AND DEVICES FOR DUAL CLOSED LOOP MODULATION CONTROLLER FOR NONLINEAR RF AMPLIFIER | EP07760203.5 | 2007-04-05 | EP1935089A2 | 2008-06-25 | LANG, David, R. |
| An RF envelope amplitude control system comprises: a RF amplifier (400), wherein the RF amplifier is associated with a feedback device (500) that is configured to create a first feedback signal (509) representing the power in an RF output signal; a transmit waveform generator (100) configured to generate a reference waveform signal (125, 127),- an adaptive table waveform generator (200) configured to compare the reference waveform signal (127) and the first feedback signal (509) and to create a second feedback signal (335) based on that comparison; and a loop filter (300) configured to combine the reference waveform signal (125), the first feedback signal (509), and the second feedback signal (335) to form an amplifier control signal (304), wherein the amplifier control signal is provided to the RF amplifier (400) to adjust the RF output signal to conform to a specified RF envelope. | ||||||
| 33 | METHOD AND SYSTEM FOR DOWN-CONVERTING AN ELECTROMAGNETIC SIGNAL | EP99954996.7 | 1999-10-20 | EP1125359A1 | 2001-08-22 | SORRELLS, David, F.; BULTMAN, Michael, J.; COOK, Robert, W.; LOOKE, Richard, C.; MOSES, Charley, D., Jr.; RAWLINS, Gregory, S.; RAWLINS, Michael, W. |
| 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. | ||||||
| 34 | Leistungssender, insbesondere Rundfunk-Leistungssender | EP87111662.0 | 1987-08-12 | EP0256505A1 | 1988-02-24 | Zeis, Jürgen |
Die Erfindung betrifft einen Leistungssender, insbesondere einen Einseitenband-Rundfunk-Leistunssender, der ein Einseitenbandsignal, z.B. gemäß den Sendearten H3E oder R3E, aussenden kann, das von einem Doppelseitenband (A3E)-Empfänger empfangbar ist. Bei dem Leistungssender ist eine vom Modulationssignal abhängige Steuerung und/oder Regelung des Träger- und/oder Einseitenbandsignals vorhanden, so daß ein kostengünstiger Sendebetrieb möglich ist. |
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| 35 | Amplitudenmodulierter Sender mit Steuerung des Trägerwertes | EP84107539.3 | 1984-06-29 | EP0137121A1 | 1985-04-17 | Kyrian, Bohumil |
Bei einem amplitudenmodulierten Sender mit Steuerung des Trägerwertes (T) nach einem verbesserten HAPUG-Verfahren wird dadurch eine vergrösserte Energieerspamis bei gleichzeitiger Erhöhung des Störspannungsabstandes am Empfangsort erzieh, dass die Steuerung entlang einer statischen Kennlinie (SK) erfolgt, die bei verschwindendem Modulationspegel (P) mit einem Trägerrestwert (R) beginnt, mit steigendem Pegel auf einem minimalen Trägerwert (Tmin) abfällt und erst oberhalb eines ersten Pegel-wertes (P1) in die ideale Trägersteuerungs-Kennlinie übergeht. Eine Verringerung der Uebernahmeverzerrungen ergibt sich mit einer zusätzlichen dynamischen Steuerung. |
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| 36 | OSCILLATOR CIRCUITS AND METHOD TO COMPENSATE THE FREQUENCY PULLING | EP15173752.5 | 2015-06-25 | EP2963825A1 | 2016-01-06 | Scuderi, Angelo; Calcagno, Antonino; Scaccianoce, Salvatore |
Oscillator circuit comprising a local oscillator (1) configured to generate a carrier signal (2) having a tunable frequency (ft), a first modulator (SW1) and a power amplifier (PA) couple in cascade to said local oscillator (1) and configured to generate an output signal (VOUT), 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: |
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| 37 | POWER OSCILLATOR FOR CONTROL OF WAVESHAPE AND AMPLITUDE | EP02757769.1 | 2002-02-19 | EP1378055B1 | 2012-04-11 | BUSCH-SORENSEN, Thomas |
| 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. | ||||||
| 38 | AMPLIFIER POWER CONTROL IN FREQUENCY HOPPING APPLICATIONS AND METHODS | EP04783281 | 2004-09-07 | EP1665462A4 | 2009-12-02 | SCHUMACHER LAWRENCE R; NATARAJAN VIMALKAUSHIK |
| 39 | Method and system for down-converting an electromagnetic signal | EP02079190.1 | 1999-10-20 | EP1315285B8 | 2009-08-12 | Sorrels, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Charley D. Jr.; Rawlins, Gregory S.; Rawlins, Michael W. |
| 40 | Method and system for down-converting an electromagnetic signal | EP02079190.1 | 1999-10-20 | EP1315285B1 | 2009-06-03 | Sorrels, David F.; Bultman, Michael J.; Cook, Robert W.; Looke, Richard C.; Moses, Charley D. Jr.; Rawlins, Gregory S.; Rawlins, Michael W. |
