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71. 发明公开

EP1444775A2 METHOD AND APPARATUS TO MANAGE ADDRESS TRANSLATION FOR SECURE CONNECTIONS 有权
标题翻译：方法和装置地址转换安全连接
公开(公告)号：EP1444775A2
公开(公告)日：2004-08-11
申请号：EP02784385.3
申请日：2002-10-31
申请人： INTEL CORPORATION
发明人： EGEVANG, Kjeld
IPC分类号： H03F1/00
CPC分类号： H04L63/0428 , H04L29/125 , H04L61/2564 , H04L63/06
摘要： Embodiments of a method and apparatus to manage secure connections using address translation are described.

72. 发明公开

EP1346473A4 FEED-FORWARD AMPLIFIER LOOP CONTROL UTILIZING IF SIGNAL PROCESSING 审中-公开
标题翻译： FORWARD放大器耦合控制圈圈上与IF信号处理
公开(公告)号：EP1346473A4
公开(公告)日：2004-08-04
申请号：EP01991548
申请日：2001-12-21
申请人： PARADIGM WIRELESS SYSTEMS INC
发明人： GENTZLER CHARLES
IPC分类号： H03F1/32 , H03F3/66 , H03F1/00 , H03F1/26
CPC分类号： H03F1/3229
摘要： An amplifier arrangement including a main amplifier (15) to which feed-forward cancellation is applied, where the amplifier arrangement comprises an input (11) for receiving signals to be amplified, an ouput (27) for providing an amplified input signal, a pilot signal modulation circuit (SSB modulator) to generate a CW frequency shifted pilot signal, a mixer down (Lo) for converting the pilot signal to an IF signal, and a sampling circuit (DSP35) for digitally sampling the IF signal. The amplifier arrangement includes a signal cancellation loop (having main amplifier 15) and a distortion cancellation loop each acting as an independent control function for minimizing pilot signal. The signal cancellation loop (having error amplifier 24) utilizes a Cartesian loop method for controlling the signal cancellation loop for sensing both phase and amplitude information simultaneously. The Cartesian loop uses a high frequency active mixer, which is a dual cross coupled differential pairs of devices capable of operating with input signals from near DC to 2.4 GHz, for control of the signal cancellation loop.

73. 发明公开

EP1346472A4 CLOSED LOOP ACTIVE CANCELLATION TECHNIQUE (ACT)-BASED RF POWER AMPLIFIER LINEARIZATION ARCHITECTURE 有权
标题翻译：线性化建筑一种基于主动消光科技RF功率转换器采用闭环（ACT）
公开(公告)号：EP1346472A4
公开(公告)日：2004-05-12
申请号：EP01991348
申请日：2001-12-21
申请人： SPECTRIAN CORP
发明人： EISENBERG JOHN A , AVIS STEVE
IPC分类号： H03F1/32 , H03F3/66 , H03F1/00 , H03F1/26
CPC分类号： H03F1/3235
摘要： A closed loop, active cancellation technique (ACT)-based RF power amplifier linearization architecture injects a pilot tone (via directional coupler (22) at the input of amplifier (20)) as a "pseudo distortion" signal into signal paths through first and second matched RF amplifiers (20, 80), and a set of power minimization loops are closed around the RF amplifier pair. The power minimizing control loops control a set of vector modulators such that both the injected pilot tone and intermodulation distortion products are canceled, while RF carrier components constructively sum in the composite output of the two RF amplifiers.

74. 发明公开

EP1329020A2 AMPLIFIER HAVING STACKED CURRENT-DRIVEN CURRENT DRIVERS 审中-公开
标题翻译：与电流控制型电力驱动程序放大器一字排开
公开(公告)号：EP1329020A2
公开(公告)日：2003-07-23
申请号：EP01987967.5
申请日：2001-10-09
申请人： Koninklijke Philips Electronics N.V.
发明人： KHOSROWBEYGI, Abdolfazl , AGGARWAL, Sudhir
IPC分类号： H03F1/00
CPC分类号： H03G1/0023
摘要： According to a particular example application, the present invention is embodied in the form of first and second current-steering sections arranged to steer a differential current input signal. Each of the first and second current-steering sections is current driven via differential current paths. The first current-steering section configured and arranged to source current and thereby drive the second current-steering section. Another aspect of the invention employs stacked Gilbert cells, as described above, to form a variable gain amplifier ("VGA") circuit that achieves a large dynamic range, a wide frequency response and improved linearity, while consuming relatively low amounts of power.

75. 发明公开

EP1264395A2 IMPROVED METHOD AND APPARATUS FOR IMPROVING THE EFFICIENCY OF POWER AMPLIFIERS, OPERATING UNDER A LARGE PEAK-TO-AVERAGE RATIO 有权
标题翻译：方法和设备用于增加功率放大器的效率信号，高峰值取平均比率
公开(公告)号：EP1264395A2
公开(公告)日：2002-12-11
申请号：EP01912090.6
申请日：2001-03-08
申请人： Paragon Communications Ltd.
发明人： BAR-DAVID, Israel
IPC分类号： H03F1/00
CPC分类号： H03F1/0288 , H03F1/0222 , H03F1/0244 , H03G3/004 , H03G3/3036 , H04L27/2614 , H04L27/2626
摘要： Method and apparatus for improving the efficiency and the dynamic range of a power amplifier operated with signals having a large peak-to-average ratio. A reference level is determined, above which at least a portion of the magnitude of an input signal being a modulated signal that is input to the power amplifier, or a baseband waveform that is used to generate the modulated signal, is defined as an excess input signal. The magnitude of the input signal is continuously sampled, for detecting an excess input signal. A lower level of operating voltage is supplied to the power amplifier, if no excess input signal is detected. The lower level of operating voltage is sufficient to effectively amplify input signals having a magnitude below the reference level. A higher level of operating voltage is supplied to the power amplifier, whenever an excess input signal is detected. The higher level of operating voltage is sufficient to effectively amplify input signals having a magnitude above the reference level.

76. 发明授权

EP0786858B1 An amplifier with a low offset 失效
标题翻译：具有低的放大器的偏移
公开(公告)号：EP0786858B1
公开(公告)日：2002-10-23
申请号：EP96830035.0
申请日：1996-01-26
申请人： STMicroelectronics S.r.l. , CO.RI.M.ME. CONSORZIO PER LA RICERCA SULLA MICROELETTRONICA NEL MEZZOGIORNO
发明人： Alini, Roberto , Bruccoleri, Melchiorre , Cosentino, Gaetano , Pisati, Valerio
IPC分类号： H03F1/00 , H03F3/30
CPC分类号： H03F3/3077

77. 发明公开

EP1234375A2 CONTROL SCHEME FOR DISTORTION REDUCTION 审中-公开
标题翻译：控制方案以减少失真
公开(公告)号：EP1234375A2
公开(公告)日：2002-08-28
申请号：EP00977780.6
申请日：2000-12-01
申请人： Wireless Systems International Limited
发明人： KENINGTON, Peter , NEW, Anthony, Michael
IPC分类号： H03F1/00
CPC分类号： H03F1/3258 , H03F1/3247 , H03F1/3294
摘要： In predistorter (100), non-linear element (126) generates a distortion signal which is injected into the input (110) of a non-linear power amplifier (112 at 118). The distortion signal is optimised by a vector modulator to cancel distortion caused by amplifier (112). The control signals for the vector modulator are provided by a digital signal processor (Figure 2). The input signal (110) and the output signal (114) are sampled and processed to produce an audio frequency error signal which is correlated in the DSP to produce the control signals for the vector modulator whilst avoiding analogue correlation problems.

78. 发明公开

EP1232565A2 HIGH EFFICIENCY POWER AMPLIFIER 有权
标题翻译：功率放大器高效率
公开(公告)号：EP1232565A2
公开(公告)日：2002-08-21
申请号：EP00992045.5
申请日：2000-11-16
申请人： Globespan Inc.
发明人： LEWYN, Lanny, L.
IPC分类号： H03F1/00
CPC分类号： H03F3/3077 , H03F3/3079
摘要： A monolithic integrated circuit amplifier has a gain stage (202) and a buffer stage (210). The buffer stage includes an output stage and two separate voltage supplies (+Vlo, +Vhi), the second of which has a greater magnitude than the first. Switching circuitry (P6, N8, N10; P4, N5, N9; N6, P8, P10; N4, P5, P9); is included that is connected to the output stage via a regulator bus. When an output demand voltage is less than a switch-over threshold, current to the output stage is provided substantially entirely from the first voltage supply; when the output demand voltage is greater than the switch-over threshold, current to the output stage is provided substantially entirely from the second voltage supply. Collector voltage at the output stage (N7, R3; P7, R4) can be maintained greater than the emitter voltage by a predetermined, substantially constant amount. Voltage headroom circuitry is preferably also included for setting a voltage headroom, that is, the lowest voltage constantly available at the second current terminal of the output transistor relative to the first current terminal of an output transistor (N7, P7).

79. 发明授权

EP0716502B1 Integrated-circuit (IC) amplifier with plural complementary stages 失效
标题翻译：集成放大器电路具有多个互补的步骤
公开(公告)号：EP0716502B1
公开(公告)日：2002-06-12
申请号：EP95119027.1
申请日：1995-12-04
申请人： ANALOG DEVICES, INCORPORATED
发明人： Gosser, Royal A. , Townsend, Jeffrey A.
IPC分类号： H03F1/00 , H03F1/32 , H03F3/30
CPC分类号： H03F1/3217 , H03F3/3066

80. 发明公开

EP1133823A2 TEMPERATURE SELF-COMPENSATING FILTER FOR HIGH FREQUENCY TRANSCEIVERS 有权
标题翻译：自我温度平衡滤波高频通道接收机
公开(公告)号：EP1133823A2
公开(公告)日：2001-09-19
申请号：EP99966902.1
申请日：1999-11-19
申请人： Siemens Information and Communication Networks S.p.A.
发明人： COSTA, Mario , RAVANELLI, Roberto
IPC分类号： H03F1/00
CPC分类号： H01P1/2138
摘要： The present invention relates to a duplexer set up by two decoupling filters for high frequency transceivers of the temperature self-compensating type and implemented by means of a pair of mechanic bodies (2), each one of which including a plurality of resonance cavities (3). Inside of the cavity (3) of the superior body (2) of the duplexer, a corresponding adjustment disc (7) is lodged in a removable and coaxial way which is provided with a supporting stem (8) coming out of a passage hole (12) obtained on the summit of the cavity (3). The bodies (2) are bound between them, so that the cavities of one or the other turn out to be coaxially facing each other. The passage hole (12) of the filter according to the invention is threaded. Moreover at each filter at least one bush (9) is associated having one portion (11) engaged in the hole (12) and inside of which the stem (8) of the disc (7) is housed.

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