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11. 发明申请

WO1997024801A1 METHODS AND APPARATUS FOR SIGNAL AMPLITUDE CONTROL SYSTEMS 审中-公开
标题翻译：信号放大控制系统的方法和装置
公开(公告)号：WO1997024801A1
公开(公告)日：1997-07-10
申请号：PCT/US1996020037
申请日：1996-12-20
申请人： MAXIM INTEGRATED PRODUCTS, INC.
发明人： MAXIM INTEGRATED PRODUCTS, INC. , JENSEN, Brent, R. , MARSH, James, W., H.
IPC分类号： H03G03/20
CPC分类号： G06G7/24 , H03G3/3042 , H03G3/3047 , H03G7/001
摘要： A method for obtaining a rectified signal from a first alternating current signal. The method includes the step of inputting the first alternating current signal into a variable gain amplifier (412) to obtain a second alternating current signal. The second alternating current signal has a substantially constant peak-to-peak voltage irrespective of a power level of the first alternating current signal. The method further includes the step of rectifying the second alternating current signal, using a power detector circuit (418), to obtain the rectified signal, whereby a direct current level of the rectified signal is substantially proportional to the power level of the first alternating current irrespective of the power level of the first alternating current. The rectified signal may then be employed in, for example, a feedback control circuit to control the amount of power output by an RF signal source (100).
摘要翻译：一种从第一交流信号获得整流信号的方法。该方法包括将第一交流信号输入到可变增益放大器（412）以获得第二交流信号的步骤。与第一交流信号的功率电平无关，第二交流信号具有基本恒定的峰 - 峰电压。该方法还包括使用功率检测器电路（418）整流第二交流信号以获得整流信号的步骤，由此整流信号的直流电平基本上与第一交流电的功率电平成比例而与第一交流电的功率水平无关。然后，经整流的信号可以用于例如反馈控制电路以控制由RF信号源（100）输出的功率量。

12. 发明申请

WO9321689A3 DEMODULATING LOGARITHMIC AMPLIFIER 审中-公开
标题翻译：解调逻辑放大器
公开(公告)号：WO9321689A3
公开(公告)日：1994-02-17
申请号：PCT/US9303536
申请日：1993-04-14
申请人： ANALOG DEVICES INC
发明人： GILBERT BARRIE
IPC分类号： H03G11/08 , H03D1/00 , H03G7/00
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： PCT No.PCT / US93 / 03536 Sec。 371日期：1995年2月2日 102（e）日期1995年2月2日PCT提交1993年4月14日PCT公布。公开号WO93 / 21689 日期：1993年10月28日对数放大器增益级，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。

13. 发明申请

WO2013152795A1 RSSI SYSTEM AND BIAS METHOD FOR AMPLIFIER STAGES IN RSSI SYSTEMS 审中-公开
标题翻译： RSSI系统中用于放大器级的RSSI系统和偏置方法
公开(公告)号：WO2013152795A1
公开(公告)日：2013-10-17
申请号：PCT/EP2012/056692
申请日：2012-04-12
申请人： EPCOS AG , VAN DER CAMMEN, Peter
发明人： VAN DER CAMMEN, Peter
IPC分类号： H03G7/00 , H04B17/00
CPC分类号： H03G7/001 , H04B17/24 , H04B17/318
摘要： RSSI systems providing an improved accuracy and bias methods for driving amplifiers in such systems are provided. For that, an RSSI system comprises a main cascade and a reference cascade of amplifier stages, an attenuator and an additional amplifier, where the amplifier stages are controlled via a feedback loop. On top of that a method for measuring the large signal behavior of an amplifier stage in a RSSI system is given that can be used to increase the accuracy as well.
摘要翻译：提供了提供用于在这种系统中驱动放大器的改进的精度和偏置方法的RSSI系统。为此，RSSI系统包括主级联和放大级的参考级联，衰减器和附加放大器，其中放大器级通过反馈回路进行控制。此外，给出了一种用于测量RSSI系统中的放大器级的大信号特性的方法，可用于提高精度。

14. 发明申请

WO2009107949A2 DUAL MODE SATELLITE SIGNAL RECEIVER AND METHOD THEREOF 审中-公开
标题翻译：双模式卫星信号接收器及其方法
公开(公告)号：WO2009107949A2
公开(公告)日：2009-09-03
申请号：PCT/KR2009/000835
申请日：2009-02-23
申请人： CORE LOGIC INC. , JO, Jun-Gi , PARK, Seong Eon , YOO, Changsik
发明人： JO, Jun-Gi , PARK, Seong Eon , YOO, Changsik
IPC分类号： G01S5/14
CPC分类号： H03G3/3052 , G01S19/33 , G01S19/37 , H03G7/001
摘要： A dual mode satellite signal receiver capable of supporting at least two global navigation satellite systems and a satellite signal receiving method are provided. The dual mode satellite signal receiver comprises a frequency synthesizer for generating a local oscillator signal based on a reference frequency; a mixer for mixing the local oscillator signal with a satellite signal and outputting the mixed signal as a signal of an intermediate frequency band; a first filter for filtering the signal output from the mixer to reject an image signal and output only an actual signal; a second filter for filtering the actual signal to output only a predetermined bandwidth according to a positioning mode; and an amplifier for amplifying the second filter output signal to a predetermined level and outputting the amplified signal.
摘要翻译：提供了一种能够支持至少两个全球导航卫星系统的双模式卫星信号接收器和一种卫星信号接收方法。双模式卫星信号接收器包括频率合成器，用于基于参考频率产生本地振荡器信号; 混频器，用于将本地振荡器信号与卫星信号混频并输出混合信号作为中频带的信号; 第一滤波器，用于对从混频器输出的信号进行滤波以抑制图像信号并仅输出实际信号; 第二滤波器，用于根据定位模式对实际信号进行滤波以仅输出预定带宽; 以及放大器，用于将第二滤波器输出信号放大到预定的电平并输出放大的信号。

15. 发明申请

WO01013513A1 PROGRAMMABLE LOW NOISE CMOS DIFFERENTIAL VOLTAGE CONTROLLED LOGARITHMIC ATTENUATOR AND METHOD 审中-公开
标题翻译：可编程低噪声CMOS差分电压控制的对数衰减器和方法
公开(公告)号：WO01013513A1
公开(公告)日：2001-02-22
申请号：PCT/US2000/020515
申请日：2000-07-27
IPC分类号： H03G1/00 , H03G7/00 , H03G11/08 , H03K13/02
CPC分类号： H03G1/0088 , H03G7/001
摘要： A logarithmically controlled attenuator circuit includes a first group of parallel resistive elements (Q1, Q3, Q5...), each having a first terminal connected to an output connector (12), and a second group of parallel resistive elements (Q2, Q4...) each having a first terminal connected to the output connector (12). A first group of switching elements (30-1, 30-3, 30-5...) selectively couples the parallel resistive elements of the first group, respectively, between the output conductor (12) and a first reference voltage conductor (Vcm) and a second group of switching elements (30-2, 30-4...) selectively couples the parallel resistive elements of the second group, respectively, between the output conductor (12) and the first reference voltage. The gain of the logarithmically controlled attenuator is controlled by turning on selected combination of the switches of both the first and second groups. A programmable low noise, low distortion CMOS logarithmic attenuator/amplifier circuit is also disclosed.
摘要翻译：对数控制的衰减器电路包括第一组并联电阻元件（Q1，Q3，Q5 ...），每个具有连接到输出连接器（12）的第一端子和第二组并联电阻元件（Q2，Q4 ...） ...），每个具有连接到输出连接器（12）的第一端子。第一组开关元件（30-1,30-3,30-5 ...）分别在输出导体（12）和第一参考电压导体（Vcm）之间选择性地耦合第一组的并联电阻元件）和第二组开关元件（30-2,30-4 ...）分别在输出导体（12）和第一参考电压之间选择性地耦合第二组的并联电阻元件。通过打开第一组和第二组的开关的选定组合来控制对数控制的衰减器的增益。还公开了可编程低噪声，低失真CMOS对数衰减器/放大器电路。

16. 发明申请

WO1997033366A2 CIRCUIT ARRANGEMENT COMPRISING A LOGARITHMIC TRANSFER FUNCTION 审中-公开
标题翻译：包含对数转移函数的电路布置
公开(公告)号：WO1997033366A2
公开(公告)日：1997-09-12
申请号：PCT/IB1997000200
申请日：1997-03-05
申请人： PHILIPS ELECTRONICS N.V. , PHILIPS PATENTVERWALTUNG GMBH , PHILIPS NORDEN AB
发明人： PHILIPS ELECTRONICS N.V. , PHILIPS PATENTVERWALTUNG GMBH , PHILIPS NORDEN AB , DICK, Burkhard
IPC分类号： H03G07/06
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.
摘要翻译：给出了包括在输入信号和输入信号的预定电平范围内的输出信号之间的对数传递函数的电路装置的描述，包括形成第一差分放大器的一对放大器元件，其放大器的主电流路径元件一方面彼此连接并连接到第一电流源，另一方面连接到由各个抽头细分的工作阻抗，并且其放大器元件被提供有输入信号的控制端; 形成第二差分放大器的一对放大器元件，放大器元件连接的主电流路径一方面彼此连接到第二电流源，另一方面与主电流路径的连接的第一差分放大器和工作阻抗，并且其控制端子与工作阻抗的抽头交叉连接; 整流器级的输入端连接到差分放大器的主电流路径和工作阻抗的连接，并且其输出信号从其输出中抽出。该电路布置具有非常低的功耗和低电路复杂度。

17. 发明申请

WO1992014302A1 AMPLIFICATION CIRCUIT WITH EXPONENTIAL GAIN CONTROL 审中-公开
标题翻译：放大电路与增量控制
公开(公告)号：WO1992014302A1
公开(公告)日：1992-08-20
申请号：PCT/FR1992000088
申请日：1992-01-31
申请人： THOMSON COMPOSANTS MILITAIRES ET SPACIAUX , DEBROUX, Jean-François
发明人： THOMSON COMPOSANTS MILITAIRES ET SPACIAUX
IPC分类号： H03G01/04
CPC分类号： H03G1/04 , H03G7/001
摘要： The circuit comprises two identical amplifiers (A1, A2), the first being the basic amplification cell of the circuit (input Ie, output Is), and the second recieving a reference signal (Iref). The output of the second amplifier, which is the product of the input (Iref) and the gain (G), is an input of an amplifier gain (G) control loop. This loop receives a reference voltage (Vc) to set the gain (G) as an exponential function of Vc. A high gain differential amplifier (AD) is the main component in this loop. The voltage differential between its inputs tends to be maintained at zero by the control loop. According to the invention, a logarithmic transfer function (LTF) component is placed in the loop between the output of the second amplifier (A2) and the input of the high gain differential amplifier (AD).
摘要翻译：电路包括两个相同的放大器（A1，A2），第一个是电路的基本放大单元（输入Ie，输出Is），第二个接收参考信号（Iref）。作为输入（Iref）和增益（G）的乘积的第二放大器的输出是放大器增益（G）控制环路的输入。该回路接收参考电压（Vc）以将增益（G）设置为Vc的指数函数。高增益差分放大器（AD）是该回路中的主要部件。其输入之间的电压差通过控制回路趋于保持为零。根据本发明，将对数传递函数（LTF）分量置于第二放大器（A2）的输出端与高增益差分放大器（AD）的输入端之间的环路中。

18. 发明申请

WO1983004354A1 METER DRIVE CIRCUIT 审中-公开
标题翻译：仪表驱动电路
公开(公告)号：WO1983004354A1
公开(公告)日：1983-12-08
申请号：PCT/US1983000610
申请日：1983-04-25
申请人： MOTOROLA, INC.
发明人： MOTOROLA, INC. , MAIN, William, Eric
IPC分类号： H04B01/26
CPC分类号： H03G7/001 , H03G11/06 , H03J3/14
摘要： A circuit and method for producing a signal the magnitude of which varies with the logarithm of an input signal supplied to a plurality of cascaded differential amplifier stages (10, 12, etc.) each having substantially equal gain. As particular ones of the stages go into limiting the DC rectified voltage produced at the differential common mode (22, 40, etc.) of each of the stages is detected to produce a plurality of currents. These currents are summed to the input (83) of a current turn-around circuit (84) which produces the signal at an output.

19. 发明申请

WO2009107949A3 DUAL MODE SATELLITE SIGNAL RECEIVER AND METHOD THEREOF 审中-公开
标题翻译：双模式卫星信号接收机及其方法
公开(公告)号：WO2009107949A3
公开(公告)日：2009-11-19
申请号：PCT/KR2009000835
申请日：2009-02-23
申请人： CORE LOGIC INC , JO JUN-GI , PARK SEONG EON , YOO CHANGSIK
发明人： JO JUN-GI , PARK SEONG EON , YOO CHANGSIK
IPC分类号： G01S19/04 , G01S19/10 , G01S19/33 , G01S19/37 , G01S19/44
CPC分类号： H03G3/3052 , G01S19/33 , G01S19/37 , H03G7/001
摘要： A dual mode satellite signal receiver capable of supporting at least two global navigation satellite systems and a satellite signal receiving method are provided. The dual mode satellite signal receiver comprises a frequency synthesizer for generating a local oscillator signal based on a reference frequency; a mixer for mixing the local oscillator signal with a satellite signal and outputting the mixed signal as a signal of an intermediate frequency band; a first filter for filtering the signal output from the mixer to reject an image signal and output only an actual signal; a second filter for filtering the actual signal to output only a predetermined bandwidth according to a positioning mode; and an amplifier for amplifying the second filter output signal to a predetermined level and outputting the amplified signal.
摘要翻译：提供了能够支持至少两个全球导航卫星系统和卫星信号接收方法的双模卫星信号接收机。双模式卫星信号接收机包括用于基于参考频率产生本地振荡器信号的频率合成器; 混合器，用于将本地振荡器信号与卫星信号混合并输出混合信号作为中频带的信号; 用于对从混频器输出的信号进行滤波以拒绝图像信号并仅输出实际信号的第一滤波器; 第二滤波器，用于根据定位模式对实际信号进行滤波以仅输出预定带宽; 以及用于将第二滤波器输出信号放大到预定电平并输出放大信号的放大器。

20. 发明申请

WO2008069478A1 LIMITING AMPLIFIER HAVING IMPROVED GAIN AND BANDWIDTH CHARACTERISTICS 审中-公开
标题翻译：具有改进增益和带宽特性的限幅放大器
公开(公告)号：WO2008069478A1
公开(公告)日：2008-06-12
申请号：PCT/KR2007/005948
申请日：2007-11-23
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , HONG, Seon Eui , KIM, Ho Young , CHONG, Young Jun
发明人： HONG, Seon Eui , KIM, Ho Young , CHONG, Young Jun
IPC分类号： H03G11/00
CPC分类号： H03G7/001 , H03F1/42 , H03F1/486 , H03F3/087 , H03F3/45183 , H03F2200/151 , H03F2200/36 , H03F2203/45114 , H03F2203/45352 , H03F2203/45366 , H03F2203/45528
摘要： Provided is a limiting amplifier having improved gain and bandwidth characteristics. According to the limiting amplifier, the maximum gain is increased by connecting a feedback resistor to an amplifier stage, and a bandwidth characteristic is improved by connecting a transistor having a source follower structure to the amplifier stage and reducing a Miller effect. Therefore, it is possible to obtain uniform gain that is a unique characteristic of a limiting amplifier. In addition, it is possible to obtain a wide bandwidth as well as an improved gain characteristic.
摘要翻译：提供了具有改进的增益和带宽特性的限幅放大器。根据限幅放大器，通过将反馈电阻器连接到放大器级来增加最大增益，并且通过将具有源极跟随器结构的晶体管连接到放大器级并降低米勒效应来提高带宽特性。因此，可以获得作为限幅放大器的唯一特性的均匀增益。此外，可以获得宽的带宽以及改进的增益特性。

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