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1. 发明申请

WO2004045226A2 CONTINUOUSLY VARIABLE GAIN RADIO FREQUENCY DRIVER AMPLIFIER HAVING LINEAR IN DECIBEL GAIN CONTROL CHARACTERISTICS 审中-公开
标题翻译：具有线性差分增益控制特性的连续可变增益射频驱动放大器
公开(公告)号：WO2004045226A2
公开(公告)日：2004-05-27
申请号：PCT/US2003/036231
申请日：2003-11-12
申请人： QUALCOMM INCORPORATED
发明人： BARNETT, Kenneth , WALKER, Brett C. , GARD, Kevin
IPC分类号： H04Q7/00
CPC分类号： H04B5/00 , H03F1/301 , H03G1/04 , H03G3/3036 , H03G3/3042 , H03G7/001
摘要： A radio frequency (RF) driver amplifier system and method that provides linear in decibel gain control is provided. The RF driver amplifier system comprises a linear transconductor receiving an input voltage and providing a controlled current based on input voltage received, temperature compensation circuitry for varying current from the linear transconductor according to absolute temperature, an exponential current controller receiving current varied according to temperature and providing an exponential current in response, and an inductive degeneration compensator receiving exponential current and providing a control current to driver amplifier circuitry , thereby compensating for inductive degeneration due to at least one inductor in the driver amplifier circuitry . Control current passes from the inductive degeneration compensator to the driver amplifier circuitry . Output gain from the driver amplifier circuitry varies linearly in decibels with respect to the input voltage.
摘要翻译：提供了一种提供线性分贝增益控制的射频（RF）驱动放大器系统和方法。该RF驱动放大器系统包括接收输入电压并基于接收到的输入电压提供受控电流的线性跨导器，用于根据绝对温度改变来自线性跨导器的电流的温度补偿电路，接收根据温度变化的电流的指数电流控制器和提供响应的指数电流，以及接收指数电流并向驱动器放大器电路提供控制电流从而补偿由于驱动器放大器电路中的至少一个电感器引起的电感负反馈的电感负反馈补偿器。控制电流从感性负反馈补偿器传递到驱动器放大器电路。来自驱动器放大器电路的输出增益相对于输入电压以分贝线性变化。

2. 发明申请

WO0148915A3 ELECTRONIC CIRCUIT 审中-公开
标题翻译：电子电路
公开(公告)号：WO0148915A3
公开(公告)日：2001-12-27
申请号：PCT/EP0012904
申请日：2000-12-18
申请人： ERICSSON TELEFON AB L M
发明人： SETTY SUMA
IPC分类号： H03G1/00 , H03G7/00 , H03G7/06 , G06G7/24
CPC分类号： H03G1/0023 , H03G7/001
摘要： A control signal is conditioned such that it produces a conditioned control signal which is the sum of two exponentially varying components. The resulting conditioned control signal, applied to an amplifier circuit, produces a gain which varies linearly in dB with changes in the control voltage.
摘要翻译：对控制信号进行调节，使得其产生调节的控制信号，该控制信号是两个指数变化分量的总和。所产生的经调节的控制信号被施加到放大器电路，产生随着控制电压的变化以dB为单位线性变化的增益。

3. 发明申请

WO01048915A2 ELECTRONIC CIRCUIT 审中-公开
标题翻译：电子电路
公开(公告)号：WO01048915A2
公开(公告)日：2001-07-05
申请号：PCT/EP2000/012904
申请日：2000-12-18
IPC分类号： H03G1/00 , H03G7/00 , H03G
CPC分类号： H03G1/0023 , H03G7/001
摘要： A control signal is conditioned such that it produces a conditioned control signal which is the sum of two exponentially varying components. The resulting conditioned control signal, applied to an amplifier circuit, produces a gain which varies linearly in dB with changes in the control voltage.
摘要翻译：本发明包括调节控制信号以产生作为两个指数变化分量之和的调节控制信号。施加到放大器电路的所得调节控制信号产生增益，其随着控制电压的变化以dB为单位线性变化。

4. 发明申请

WO9638907A3 IF AMPLIFIERS/LIMITERS 审中-公开
标题翻译： IF AMPLIFIERS / LIMITERS
公开(公告)号：WO9638907A3
公开(公告)日：1997-02-06
申请号：PCT/IB9600429
申请日：1996-05-09
申请人： PHILIPS ELECTRONICS NV , PHILIPS NORDEN AB
发明人： PERSICO CHARLES J , NAVID NASROLLAH SAEED NAVID , FOTOWAT-AHMADY ALI FOTOWAT-AHM
IPC分类号： H03G11/00 , H03F3/45 , H03G7/00 , H03G11/08
CPC分类号： H03G7/001
摘要： An IF limiting amplifier uses localized positive feedback in each amplifier stage to provide additional small signal gain while maintaining the limiting gain. The extra small signal gain results in higher overall sensitivity for the receiver at less bias current. The reduction in the number of stages needed to perform the same signal response results in a significant decrease in power consumption by the circuit.

5. 发明申请

WO1996010796A1 TEMPERATURE COMPENSATED LOGARITHMIC CONVERTOR 审中-公开
标题翻译：温度补偿对数转换器
公开(公告)号：WO1996010796A1
公开(公告)日：1996-04-11
申请号：PCT/SE1995001097
申请日：1995-09-26
申请人： TELEFONAKTIEBOLAGET LM ERICSSON
发明人： TELEFONAKTIEBOLAGET LM ERICSSON , NORDHOLT, Ernst , STOFFELS, Johannes
IPC分类号： G06G07/24
CPC分类号： G06G7/24 , H03G7/001
摘要： A logarithmic convertor based on a nonlinear successive detection principle has a temperature-compensated biassing arrangement and a large operating range due to a d.c. feedback network for offset reduction and an attenuating input stage permitting large input voltages. The log convertor exploits the exponential relationship between the collector current and base-emitter voltage of a bipolar transistor to render the convertor insensitive to temperature and process parameter variations. The converter is a cascade of sections, each having a constant-gain differential amplifier having a particularized current source. The constant-gain amplifier may include a Darlington differential pair, and the current sources have outputs that are either temperature-independent or proportional to temperature.
摘要翻译：基于非线性连续检测原理的对数转换器具有温度补偿偏置布置和大直径运算范围。用于偏移减小的反馈网络和允许大输入电压的衰减输入级。对数转换器利用双极晶体管的集电极电流和基极 - 发射极之间的指数关系，使转换器对温度和工艺参数变化不敏感。转换器是级联的部分，每个部分具有具有特定电流源的恒定增益差分放大器。恒定增益放大器可以包括达林顿差分对，并且电流源具有与温度无关或与温度成比例的输出。

6. 发明申请

WO1993021689A2 DEMODULATING LOGARITHMIC AMPLIFIER 审中-公开
标题翻译：解调逻辑放大器
公开(公告)号：WO1993021689A2
公开(公告)日：1993-10-28
申请号：PCT/US1993003536
申请日：1993-04-14
申请人： ANALOG DEVICES, INC. , GILBERT, Barrie
发明人： ANALOG DEVICES, INC.
IPC分类号： H03G07/00
CPC分类号： H03G7/001
摘要： A logarithmic amplifier gain stage for supplying, in response to an instantaneous input signal, an output signal corresponding to a logarithmic value of the input signal. The gain stage includes a transistor amplifier having an input that receives the input signal and an intermediate output that supplies an intermediate output signal. A full-wave detector having an input coupled to the intermediate output of the transistor amplifier receives the intermediate output signal and supplies the output signal wherein the detector includes a rectifier comprising transistors having different effective emitter areas. A topology for a logarithmic amplifier is also provided, including a first series-coupled chain of N gain stages having a first input, a second series-coupled chain of M gain stages having a second input, an attenuator coupled between the first input and the second input, a series-coupled chain of summers, each summer receiving an output signal from a respective gain stage in the first series-coupled chain and the second series-coupled chain and supplying a summed signal. A circuit including an output amplifier having an inverting input and a non-inverting input, the inverting input receiving an output of the plurality of gain stages, the non-inverting input receiving a voltage having a negative coefficient of temperature, the output amplifier providing at an output thereof the output signal having a temperature-stable log intercept.
摘要翻译：对数放大器增益级，用于响应于瞬时输入信号，提供与输入信号的对数值相对应的输出信号。增益级包括具有接收输入信号的输入的晶体管放大器和提供中间输出信号的中间输出。具有耦合到晶体管放大器的中间输出的输入的全波检测器接收中间输出信号并提供输出信号，其中检波器包括具有不同有效发射极区域的晶体管的整流器。还提供了一种用于对数放大器的拓扑，包括具有第一输入的N个增益级的第一串联耦合链，具有第二输入的M个增益级的第二串联耦合链，耦合在第一输入和第第二输入，串联耦合的夏季链，每个夏天接收来自第一串联耦合链和第二串联耦合链中的相应增益级的输出信号，并提供相加的信号。一种包括具有反相输入和非反相输入的输出放大器的电路，所述反相输入接收所述多个增益级的输出，所述非反相输入接收具有负的系数温度的电压，所述输出放大器提供在其输出具有温度稳定的对数截距的输出信号。

7. 发明申请

WO2011161858A1 電力検出回路审中-公开
标题翻译：功率检测电路
公开(公告)号：WO2011161858A1
公开(公告)日：2011-12-29
申请号：PCT/JP2011/002129
申请日：2011-04-11
申请人：日本電気株式会社 , 兒玉浩志
发明人：兒玉　浩志
IPC分类号： H04B1/16 , G01R21/133
CPC分类号： H03G7/001 , H04B17/318
摘要：　本発明に係る電力検出回路は、受信信号を増幅する増幅部と、前記増幅部で増幅した信号を中間信号に変換するミキサ部と、前記ミキサ部から入力した入力信号の信号電力レベルを検出し、アナログ電圧信号として出力する受信強度検出部と、前記受信強度検出部のアナログ電圧信号をデジタル信号に変換するＡＤ変換器と、を有し、前記受信強度検出部は、前記入力信号の信号電力の検出分解能に応じて、出力するアナログ電圧信号の出力特性を切り替え可能とする。これにより、ＲＳＳＩの後段に接続されるＡＤ変換器が高分解能となることによる回路規模、消費電力が増大する問題を解決することができる。
摘要翻译：功率检测电路包括：放大单元，放大接收信号; 混频器单元，将由放大器单元放大的信号转换为中间信号; 接收强度检测单元，其检测并输出从混频器单元输入的输入信号的信号功率电平作为模拟电压信号; 以及将接收强度检测单元的模拟电压信号转换为数字信号的A / D转换器。接收强度检测单元可以根据输入信号的信号功率的检测分辨率来改变要输出的模拟电压信号的输出特性。这可以解决由于在RSSI之后的阶段中连接的A / D转换器的高分辨率而导致电路规模和功耗增加的问题。

8. 发明申请

WO2011063328A2 LOGARITHMIC MEAN-SQUARE POWER DETECTOR 审中-公开
标题翻译：对数均方幂检测器
公开(公告)号：WO2011063328A2
公开(公告)日：2011-05-26
申请号：PCT/US2010057611
申请日：2010-11-22
申请人： HITTITE MICROWAVE CORP , EKEN YALCIN ALPER , KATZIN PETER JOHN
发明人： EKEN YALCIN ALPER , KATZIN PETER JOHN
IPC分类号： G01R23/02
CPC分类号： G01R21/12 , G01R15/09 , G01R19/02 , G06G7/24 , H03G3/3036 , H03G7/001
摘要： A mean square power detector in accordance with one or more embodiments includes a gain or attenuation circuit comprising a plurality of gain or attenuation elements arranged for generating a plurality of amplified or attenuated versions of a radio frequency (RF) input signal. The mean square power detector also includes a plurality of mean square detectors coupled to the gain or attenuation circuit. Each of the mean square detectors receives a different one of the plurality of amplified or attenuated versions of the RF input signal. Each of the plurality of mean square detectors generates an output signal representative of the mean square power of the RF input signal for a different input signal level range. A summing element is coupled to the plurality of mean square detectors for combining the output signals of the plurality of mean square detectors to generate a signal representative of the mean square or root mean square of the RF input signal.
摘要翻译：根据一个或多个实施例的均方根功率检测器包括增益或衰减电路，该增益或衰减电路包括被布置用于产生射频（RF）输入信号的多个放大或衰减版本的多个增益或衰减元件。均方根功率检测器还包括耦合到增益或衰减电路的多个均方检测器。每个均方检测器接收RF输入信号的多个放大或衰减版本中的不同的一个。多个均方检测器中的每一个产生表示不同输入信号电平范围的RF输入信号的均方功率的输出信号。求和元件耦合到多个均方检测器，用于组合多个均方检测器的输出信号，以产生表示RF输入信号的均方根或均方根的信号。

9. 发明申请

WO9733366A3 Circuit arrangement comprising a logarithmic transfer function 审中-公开
标题翻译：电路布置包括对数传递函数
公开(公告)号：WO9733366A3
公开(公告)日：1997-10-30
申请号：PCT/IB9700200
申请日：1997-03-05
申请人： PHILIPS ELECTRONICS NV , PHILIPS PATENTVERWALTUNG , PHILIPS NORDEN AB
发明人： DICK BURKHARD
IPC分类号： H03G11/08 , G06G7/24 , H03F3/45 , H03G7/00 , H03G7/06
CPC分类号： H03G7/001 , G06G7/24
摘要： A description is given of a circuit arrangement comprising a logarithmic transfer function between an input signal and an output signal in a predefined level range of the input signal, comprising a pair of amplifier elements forming a first differential amplifier, the main current paths of which amplifier elements are connected, on the one hand, to each other and to a first current source and on the other hand, to working impedances subdivided by respective taps, and the control terminals of which amplifier elements are supplied with the input signal; a pair of amplifier elements forming a second differential amplifier, the main current paths of which amplifier elements are connected, on the one hand, to each other and to a second current source and on the other hand, to the connections of the main current paths of the first differential amplifier and the working impedances, and whose control terminals are cross-connected to the taps of the working impedances; and a rectifier stage whose input is connected to the connections of the main current paths of the differential amplifiers and the working impedances and whose output signal is tapped from its output. This circuit arrangement has a very low power consumption and low circuit complexity.

10. 发明申请

WO1997029520A1 TEMPERATURE COMPENSATED LOGARITHMIC DETECTOR 审中-公开
标题翻译：温度补偿对数检测器
公开(公告)号：WO1997029520A1
公开(公告)日：1997-08-14
申请号：PCT/US1997001959
申请日：1997-02-06
申请人： MAXIM INTEGRATED PRODUCTS, INC.
发明人： MAXIM INTEGRATED PRODUCTS, INC. , JENSEN, Brent, R.
IPC分类号： H01L31/058
CPC分类号： H03G3/3042 , G06G7/24 , H03G3/3047 , H03G7/001
摘要： A temperature compensated logarithmic detector biased with a proportional to absolute temperature (PTAT) voltage produced in accordance with an area ratio of biasing transistors is disclosed. According to one implementation of the invention, the temperature compensated logarithmic detector includes biasing circuitry (12) and a logarithmic detector cell (14). The biasing circuitry receives an input signal and produces a PTAT bias voltage from the input signal. The PTAT characteristic of the PTAT bias voltage is produced by an area ratio. The logarithmic detector cell converts the input signal to a logarithmic output signal in accordance with a logarithmic transfer function over a narrow range.
摘要翻译：公开了一种根据偏置晶体管的面积比产生的与绝对温度（PTAT）成正比的温度补偿对数检测器。根据本发明的一个实施方式，温度补偿对数检测器包括偏置电路（12）和对数检测器单元（14）。偏置电路接收输入信号并从输入信号产生PTAT偏置电压。 PTAT偏置电压的PTAT特性由面积比产生。对数检测器单元根据对数传递函数在窄范围内将输入信号转换成对数输出信号。

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