公开(公告)号：EP1907936A2

公开(公告)日：2008-04-09

申请号：EP06773884.9

申请日：2006-06-23

申请人： ReVera Incorporated

发明人： DECECCO, Paola ,  SCHUELER, Bruno ,  REED, David ,  KWAN, Michael ,  BALLANCE, David, S.

IPC分类号： G06F15/00 ,  H03F1/26

CPC分类号： G01N23/2273 ,  H01J37/26 ,  H01J2237/24585 ,  H03F1/26

摘要： A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.

公开(公告)号：EP1744460A1

公开(公告)日：2007-01-17

申请号：EP05106360.0

申请日：2005-07-12

申请人： TOWN CROFT LIMITED

发明人： Caroni, Stefano

IPC分类号： H03M1/68 ,  H03F1/26

CPC分类号： H03F3/45475 ,  H03F1/26 ,  H03F2200/228 ,  H03F2200/261 ,  H03F2203/45136

摘要： The object of the present invention refers to an amplifier for electrical parameters measurement apparatuses that allows the amplification of the electrical signal to be measured and reject the noise connected with the electronic components of the measuring system thanks to an architecture combining A/D and D/A conversions.

摘要翻译： 本发明的目的是指用于电参数测量装置的放大器，其允许放大要测量的电信号并且拒绝与测量系统的电子部件连接的噪声，这归功于结合A / D和D / A转换。

公开(公告)号：EP1739826A1

公开(公告)日：2007-01-03

申请号：EP06253348.4

申请日：2006-06-27

申请人： The Alfred E Mann Foundation for Scientific Research

发明人： Ananth, Ravi S.

IPC分类号： H03F3/45 ,  H03F1/38 ,  H03F1/26 ,  H03F3/187 ,  H03F3/00

CPC分类号： H03F3/187 ,  H03F1/26 ,  H03F1/38 ,  H03F3/005 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45156 ,  H03F2203/45296 ,  H03F2203/45332 ,  H03F2203/45512 ,  H03F2203/45544 ,  H03F2203/45546 ,  H03F2203/45631 ,  H03F2203/45632 ,  H03F2203/45686

摘要： An amplifier circuit is disclosed that allows for practical integrated circuit implementation of a dc-blocked, low-noise differential amplifier (10) capable of amplifying ultra low-frequency signals and amplitudes ranging upwards of a few microvolts. DC-blocking capacitors (68,69) having a capacitance value close to that of the effective input capacitance of the low-noise amplifier's inputs (22,24) can be used by incorporating a positive feedback mechanism that tracks any variations in the amplifier gain or integrated circuit's technology process and lowers or cancels the input parasitic capacitances (64,66). Advantageously, the parasitic capacitance of transistors, typically field effect transistors, located on an integrated circuit chip are used in the feedback mechanism. This reduces the capacitive voltage division loss of the signal at the input of the amplifier while still allowing for the use of very small values of dc-blocking capacitance. No other active elements other than the amplifier itself are required to attain a low area, integrated circuit implementation of a dc-blocked, yet ultra low-frequency high pass filtered, low-noise amplifier (10).

摘要翻译： 公开了一种放大器电路，其允许实现能够放大超低频信号和幅度在几微伏之上的幅度的直流阻塞低噪声差分放大器（10）的实际集成电路。 具有接近于低噪声放大器的输入（22,24）的有效输入电容的电容值的隔离电容器（68,69）可以通过结合一个正反馈机制来使用，该正反馈机制跟踪放大器增益中的任何变化 或集成电路的技术过程，并降低或消除输入寄生电容（64,66）。 有利地，在反馈机制中使用位于集成电路芯片上的晶体管（通常为场效应晶体管）的寄生电容。 这降低了在放大器输入端的信号的电容分压损耗，同时仍允许使用非常小的直流阻塞电容值。 除了放大器本身之外，不需要其他有源元件来实现直流阻塞但是超低频高通滤波的低噪声放大器（10）的低面积集成电路实现。

公开(公告)号：EP1101278B1

公开(公告)日：2006-05-31

申请号：EP99934515.0

申请日：1999-07-23

申请人： Texas Instruments Denmark A/S

发明人： ANDERSKOUV, Niels ,  RISBO, Lars

IPC分类号： H03F1/26 ,  H03F1/32 ,  H03F3/20

CPC分类号： H03F1/32 ,  H03F1/26 ,  H03F3/2173 ,  H03F2200/351 ,  H03F2200/372

摘要： According to the invention, a method and an amplifier e.g. of the class D type, in particular connected as class BD, wherein an audio signal is pulse-with modulated in that two sets of switches are adapted to make and break signal paths transferring pulses representing the non-inverted or inverted part of the audio signal, comprise attenuating noise and zero crossing distortion which occur because of crosstalk between modulator and control circuit halves in the amplifier. Noise and zero crossing distortion are attenuated by delaying the pulses which represent the non-inverted part and the inverted part, respectively, of the audio signal relative to each other, when the audio signal is in the vicinity of the value 0, thereby achieving modulation of the audio signal which contains characteristics from pulse with modulation of of both class AD and BD type. The advantage of this is that at low signal levels the amplifier obtains the linear properties of the class AD amplifiers at zero crossing and the low noise of the class BD amplifier. The pulse-with modulation type is here called class ABD.

公开(公告)号：EP0995261B1

公开(公告)日：2006-02-22

申请号：EP99917362.8

申请日：1999-04-07

申请人： Powerwave Technologies, Inc.

发明人： GENTZLER, Charles, R.

IPC分类号： H03F1/26 ,  H03F1/34 ,  H03F1/32

CPC分类号： H03F1/3247

摘要： The invention relates to an amplifier arrangement for amplifying an input signal (20) using a distorting main power amplifier (14) such as one operating as a class AB amplifier. The amplifier can be biased at different operating points. The method and apparatus modify bias control signals to the main amplifier (14) to reduce or minimize the distortion energy added by the main power amplifier (14). A digitally controlled processor (90) iteratively modifies various control bias signals to adjust the output (18) of the amplifier. Different gain (26, 52, 60, 66) and phase (28, 62, 68) control elements can also be iteratively updated at different rates.

公开(公告)号：EP1262017A4

公开(公告)日：2005-12-28

申请号：EP01912738

申请日：2001-02-14

申请人： SPECTRIAN CORP

发明人： GOMEZ JASON N

IPC分类号： H03F1/32 ,  H03F3/189 ,  H03F1/00 ,  H03F1/26

CPC分类号： H03F1/3229 ,  H03F1/3247

摘要： A carrier cancellation combiner (60), and pre-distortion and feed-forward loops of an RF power amplifier (20) are controlled to minimize IMD components at the output of the RF amplifier (20), by a spectral distortion measurement scheme that performs Fast Fourier Transform (FFT)-based spectral power measurements at a 'reference' signal port (SRC) (associated with the RF input signal (11)), and a plurality of 'test' signal ports (BPM, EAMP, OUT) (associated with various monitoring locations of the amplifier). Signals extracted from the control and test ports are downconverted to baseband, bandpass filtered, digitized and stored as a spectral 'snapshot' of the entire band of the signal infrastructure of the amplifier. A digital signal processor-based controller (15) processes the buffered data to produce averaged FFT's of the data extracted from the reference (SRC) and test ports (BPM, EAMP, OUT) and thereby provide spectral information for each sampled signal set. The FFT for the control data is processed to establish a baseline, with which the FFTs for the test data are compared, to generate adjustment signals for control parameters through which IMD components introduced by the amplifier may be minimized.

公开(公告)号：EP0988694B1

公开(公告)日：2005-06-22

申请号：EP99916474.2

申请日：1999-04-07

申请人： Powerwave Technologies, Inc.

发明人： GENTZLER, Charles, R.

IPC分类号： H03F1/26 ,  H03F1/32

CPC分类号： H03F1/3247

摘要： An amplifier arrangement for amplifying an input (20) uses a distorting main power amplifier (14) such as one operating as a class AB amplifier. A predistortion signal is added to the input signal to compensate for the distortion added by the main power amplifier (14). The predistortion signal can be dynamically modified to improve substantially, at least the third order intermodulation components in the output (18) of the power amplifier. A digitally controlled processor (90) iteratively modifies various phase and gain controls to adjust the output of the amplifier. Different gain and phase control lines are iteratively updated at different rates.

公开(公告)号：EP0836272B1

公开(公告)日：2005-02-23

申请号：EP97410113.1

申请日：1997-10-08

申请人： DOLPHIN INTEGRATION (Société Anonyme)

发明人： Compagne, Eric

IPC分类号： H03F3/45 ,  H03F1/26

CPC分类号： H03F1/26 ,  H03F3/45475 ,  H03F3/45977 ,  H03F2200/186 ,  H03F2200/372 ,  H03F2203/45526

公开(公告)号：EP1147600A4

公开(公告)日：2004-12-01

申请号：EP99965342

申请日：1999-12-28

申请人： TRIPATH TECHNOLOGY INC

发明人： LLEWELLYN WILLIAM D

IPC分类号： H03F1/26 ,  H03F3/45 ,  H03F3/68

CPC分类号： H03F1/26 ,  H03F3/45475 ,  H03F3/45479 ,  H03F2203/45528

摘要： Methods and apparatus are described for generating or amplifying a differential signal. The output of a first op amp (op amp 1') corresponds to one end of the differential signal. The output of a second op amp (op amp 2') corresponds to the other end of the differential signal. The inverting input of the first op amp (op amp 1') is coupled to the noninverting input of the second op amp (op amp 2').

公开(公告)号：EP1446871A1

公开(公告)日：2004-08-18

申请号：EP02780232.1

申请日：2002-10-29

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： SAHLMAN, Karl-Gösta

IPC分类号： H03F1/26

CPC分类号： H03F1/3258 ,  H03F1/3247 ,  H03F2201/3209

摘要： A solution is disclosed for achieving a functional complex base-band adaptive digital nonlinear device model providing RF-power amplifier distortion (i.e. linearization or pre-distortion) minimizing distortion characterization including memory effects. The present inventive solution is based on real device non-linear performance observations and the physical cause for the distortion is compensated in the application. This also means that a pre-distorter digital circuit is derived to have the inverse functionality of the digital device model. The model and the digital pre-distortion circuit are designed in such way, that function blocks are connected in cascade. Each function block is then designed to handle a certain type of distortion performance and can be optimized individually. The model gives possibilities to describe and evaluate different device properties. An accurate AM to AM and AM to PM characterization can be evaluated and the frequency response of the device when excited with envelope-modulated signals can be evaluated. The properties evaluated can also be used in a test procedure in a production facility to verify production quality.