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11. 发明授权

US5834976A Frequency self-compensated operational amplifier 失效
标题翻译：频率自补偿运算放大器
公开(公告)号：US5834976A
公开(公告)日：1998-11-10
申请号：US756024
申请日：1996-11-26
申请人： Luciano Tomasini , Rinaldo Castello , Giancarlo Clerici , Ivan Bietti
发明人： Luciano Tomasini , Rinaldo Castello , Giancarlo Clerici , Ivan Bietti
IPC分类号： H03F1/08 , H03F1/14 , H03F1/34
CPC分类号： H03F1/086
摘要： An operational amplifier frequency self-compensated with respect to closed-loop gain comprises a transconductance input stage and an amplifier output stage connected serially together to receive an input signal on at least one input terminal of the amplifier and generate an amplified signal on an output terminal of the amplifier. Provided between the input and output stages is an intermediate node which is connected to a compensation block to receive a frequency-variable compensation signal therefrom. The compensation block is coupled with its input to the input terminal of the amplifier The compensation block is connected to receive at least the feedback signal. Preferably, the compensation signal is variable as a function of a gain value which is determined by the feedback circuit, and said variation of the compensation signal occurs in a relationship of inverse proportionality to the gain value.
摘要翻译：相对于闭环增益自补偿的运算放大器频率包括跨导输入级和串联连接的放大器输出级，以在放大器的至少一个输入端上接收输入信号，并在输出端产生放大信号的放大器。在输入级和输出级之间设置有中间节点，其连接到补偿块以从其接收频率可变的补偿信号。补偿块与其输入耦合到放大器的输入端子。补偿块被连接以至少接收反馈信号。优选地，补偿信号作为由反馈电路确定的增益值的函数而变化，并且补偿信号的所述变化以与增益值成反比关系的关系发生。

12. 发明授权

US5528683A Method and circuit for implementing an impedance, in particular for DC telephonic applications 失效
标题翻译：用于实现阻抗的方法和电路，特别是用于DC电话应用
公开(公告)号：US5528683A
公开(公告)日：1996-06-18
申请号：US425228
申请日：1995-04-17
申请人： Luciano Tomasini , Rinaldo Castello
发明人： Luciano Tomasini , Rinaldo Castello
IPC分类号： H03F3/343 , H03F3/347 , H03H11/48 , H04B1/58 , H04M1/58 , H04M1/76 , H04M1/00
CPC分类号： H04M1/76 , H04B1/586 , H04M1/585
摘要： The invention relates to a method and circuit for implementing an impedance associated with a monolithically integrated telephone subscriber circuit connected to a telephone line having a pair of terminals. The circuit consists of a resistor connected serially to one terminal of the telephone line, and a series of current mirror circuits. The current mirror circuits are connected in a closed loop configuration to the one terminal of the telephone line. The current mirror circuits divide, by a predetermined factor, the value of the resistor when a DC or very low frequency signal is input to the telephone circuit.
摘要翻译：本发明涉及一种用于实现与连接到具有一对终端的电话线的单片电话用户电路相关联的阻抗的方法和电路。该电路包括串联连接到电话线的一个端子的电阻器和一系列电流镜电路。电流镜电路以闭环配置连接到电话线的一个终端。电流镜电路将DC或极低频信号输入到电话电路时以预定的因数除以电阻的值。

13. 发明授权

US5136258A Circuit arrangement for enhancing the transconductance of a differential amplifier stage comprising MOS transistors 失效
标题翻译：用于增强包括MOS晶体管的差分放大器级的跨导的电路装置
公开(公告)号：US5136258A
公开(公告)日：1992-08-04
申请号：US768457
申请日：1991-09-30
申请人： Germano Nicollini , Rinaldo Castello
发明人： Germano Nicollini , Rinaldo Castello
IPC分类号： H03F3/45
CPC分类号： H03F3/45179 , H03F3/45076 , H03F3/45183 , H03F2203/45026 , H03F2203/45036 , H03F2203/45192 , H03F2203/45251 , H03F2203/45288 , H03F2203/45318 , H03F2203/45658
摘要： A circuit arrangement for enhancing the transconductance of a differential amplifier stage comprising a pair of MOS transistors, having respective source electrodes connected together through a circuit node, comprises a pair of active components respectively connected in each of the connections between the aforesaid electrodes and the aforesaid node and serving a characteristic function corresponding to that of a negative value resistor. This arrangement enables the transconductance of the differential stage to be increased while keeping the dissipated electric power low and the area occupied in an integrated circuit small.
摘要翻译：一种用于增强包括一对MOS晶体管的差分放大器级的跨导的电路装置，其具有通过电路节点连接在一起的各个源极，包括分别连接在上述电极和上述电极之间的每个连接中的一对有源元件并提供与负值电阻器相对应的特征函数。这种布置使得能够增加差分级的跨导，同时保持耗散的功率低并且集成电路中占据的面积小。

14. 发明授权

US08868015B2 Transmit architecture for wireless multi-mode applications 有权
标题翻译：无线多模应用的传输体系结构
公开(公告)号：US08868015B2
公开(公告)日：2014-10-21
申请号：US12782848
申请日：2010-05-19
申请人： Gregory Uehara , Chao Yang , Ruoxin Jiang , Fernando De Bernardinis , Alessandro Venca , Rinaldo Castello , Marc Leroux , Brian Brunn
发明人： Gregory Uehara , Chao Yang , Ruoxin Jiang , Fernando De Bernardinis , Alessandro Venca , Rinaldo Castello , Marc Leroux , Brian Brunn
IPC分类号： H04B1/04 , H04B1/00
CPC分类号： H04B1/0071
摘要： In one embodiment, an apparatus includes an upconversion unit configured to upconvert a baseband signal to a radio frequency (RF) signal. A plurality of baluns for a plurality of wireless bands are provided. Multiplexing circuitry is coupled to the plurality of baluns where the upconversion unit is coupled to each balun through the multiplexing circuitry. The multiplexing circuitry is configured to multiplex the radio frequency signal from the upconversion unit to one of the plurality of baluns based on a wireless band being used.
摘要翻译：在一个实施例中，一种装置包括上变频单元，其被配置为将基带信号上变频到射频（RF）信号。提供了多个用于多个无线频段的不平衡变压器。多路复用电路耦合到多个不平衡转换器，其中上转换单元通过复用电路耦合到每个平衡 - 不平衡变换器。复用电路被配置为基于所使用的无线频带将来自上变频单元的射频信号复用到多个巴伦中的一个。

15. 发明授权

US6031416A First and second order CMOS elementary cells for time-continuous analog filters 失效
标题翻译：用于时间连续模拟滤波器的一阶和二阶CMOS单元
公开(公告)号：US6031416A
公开(公告)日：2000-02-29
申请号：US67127
申请日：1998-04-27
申请人： Andrea Baschirotto , Ugo Baschirotto , Guido Brasca , Rinaldo Castello
发明人： Andrea Baschirotto , Ugo Baschirotto , Guido Brasca , Rinaldo Castello
IPC分类号： H03H11/04 , H03K5/00
CPC分类号： H03H11/04
摘要： A CMOS elementary cell of the first order for time-continuous analog filters with non-linearity compensation, is connected between a first supply voltage reference and a second voltage reference. The cell is of a type which comprises at least a first MOS transistor having its conduction terminals connected to the first supply voltage reference and to an output terminal, and having a control terminal connected to an input terminal of the first order CMOS elementary cell. The cell further comprises a second MOS transistor in diode configuration, and an equivalent capacitor, both connected to the output terminal of the first order CMOS elementary cell. The second, diode-connected MOS transistor and the equivalent capacitor act as a load for the first MOS transistor. The first MOS transistor operates as a drive transistor operatively tied to an input voltage signal being supplied to the input terminal of the first order CMOS elementary cell. A second order filter CMOS elementary cell is similarly connected.
摘要翻译：具有非线性补偿的时间连续模拟滤波器的第一阶CMOS元件连接在第一电源电压基准和第二参考电压之间。电池是至少包括其导通端子连接到第一电源电压基准的第一MOS晶体管和输出端子，并且具有连接到第一级CMOS基本单元的输入端子的控制端子的类型。电池还包括二极管配置的第二MOS晶体管和等效电容器，两者均连接到一阶CMOS元件单元的输出端子。第二个二极管连接的MOS晶体管和等效电容器用作第一MOS晶体管的负载。第一MOS晶体管作为驱动晶体管工作，该驱动晶体管可操作地连接到被提供给第一阶CMOS元件单元的输入端的输入电压信号。类似地连接二阶滤波器CMOS单元。

16. 发明授权

US5955895A Interface circuit for boosting control signals 失效
标题翻译：用于升压控制信号的接口电路
公开(公告)号：US5955895A
公开(公告)日：1999-09-21
申请号：US744715
申请日：1996-10-29
申请人： Luciano Tomasini , Rinaldo Castello , Giancarlo Clerici , Ivan Bietti
发明人： Luciano Tomasini , Rinaldo Castello , Giancarlo Clerici , Ivan Bietti
IPC分类号： H03K17/06 , H03K19/0185
CPC分类号： H03K17/063
摘要： An interface circuit is disposed between a generator of control signals and a plurality of electronic switches in order to produce boosted voltage signals corresponding to the control signals for activating the electronic switches. To avoid the use of a capacitor with a high capacitance and thus to reduce an area of the integrated circuit, the interface circuit includes a generator of activation signals and a plurality of voltage multipliers each having an input connected to an output of the control signal generator, an output connected to at least one terminal for activating an electronic switch and two control terminals connected to an activation signal generator. Each voltage multiplier includes MOS transistors operatively coupled in series between the input and the output. The MOS transistors operate in response to the activation signals to produce a boosted voltage on the capacitor.
摘要翻译：接口电路设置在控制信号的发生器和多个电子开关之间，以便产生对应于用于激活电子开关的控制信号的升压电压信号。为了避免使用具有高电容的电容器并因此减小集成电路的面积，接口电路包括激活信号的发生器和多个电压乘法器，每个电压乘法器具有连接到控制信号发生器的输出的输入连接到用于激活电子开关的至少一个终端的输出和连接到激活信号发生器的两个控制终端。每个电压倍增器包括可操作地耦合在输入和输出之间的MOS晶体管。 MOS晶体管响应于激活信号而工作，以在电容器上产生升压电压。

17. 发明授权

US5610564A AC integrated coupler with phase equalizer 失效
标题翻译：交流集成耦合器，带相位均衡器
公开(公告)号：US5610564A
公开(公告)日：1997-03-11
申请号：US140233
申请日：1993-10-20
申请人： Luciano Tomasini , Rinaldo Castello
发明人： Luciano Tomasini , Rinaldo Castello
IPC分类号： H03H7/06 , H03H7/00 , H03H11/34 , H03H11/36 , H04M1/60 , H04M1/76 , H03H11/04
CPC分类号： H03H7/004 , H04M1/6025
摘要： A monolithically integrated AC coupling circuit is presented for DC uncoupling and AC coupling (typically in telephone applications) to an input signal. The AC coupler includes a high-pass filter having a first pole at a frequency well below a frequency of interest and a zero at zero frequency. The AC coupler also includes a pole/zero doublet between the frequency of the first pole and the frequency of interest. The frequency of the first pole for a specified error is increased by addition of the doublet. Because the frequency of the first pole is increased, the size of the required capacitors is decreased, enabling integration. An implementation of the circuit using switched capacitor techniques is described. An alternative circuit employing a unit gain interface is presented. The alternative circuit reduces the dynamic range and driving voltage requirements of its field-effect transistors.
摘要翻译：提出了一种单片集成AC耦合电路，用于DC分离和AC耦合（通常在电话应用中）到输入信号。 AC耦合器包括高通滤波器，其具有在低于感兴趣频率的频率处的第一极点和零频率处的零点。 AC耦合器还包括在第一极的频率和感兴趣的频率之间的极点/零点。通过添加双峰来增加指定误差的第一极的频率。由于第一极的频率增加，所需电容的尺寸减小，从而实现集成。描述使用开关电容器技术的电路的实现。提出了采用单位增益接口的替代电路。替代电路降低了其场效应晶体管的动态范围和驱动电压要求。

18. 发明授权

US5552747A Driver circuit compatible with low supply voltages 失效
标题翻译：驱动电路兼容低电源电压
公开(公告)号：US5552747A
公开(公告)日：1996-09-03
申请号：US457759
申请日：1995-06-01
申请人： Luciano Tomasini , Rinaldo Castello , Pierangelo Confalonieri
发明人： Luciano Tomasini , Rinaldo Castello , Pierangelo Confalonieri
IPC分类号： H03K17/06 , H03K17/687 , G05F1/10 , G05F3/02
CPC分类号： H03K17/063
摘要： A driver circuit, for an electronic switch which is to be operated from a clock signal, comprises an inverter driven by the clock signal, and a voltage doubler which is connected to supply the inverter and connected to be driven by the complementary clock signal.
摘要翻译：用于从时钟信号操作的电子开关的驱动电路包括由时钟信号驱动的反相器，以及连接以提供反相器并连接以由互补时钟信号驱动的倍压器。

19. 发明授权

US5509069A Splitting of a supply current drawn from a telecommunication system's line among a plurality of user's circuits 失效
标题翻译：从多个用户电路中从电信系统的线路分出的电源电流
公开(公告)号：US5509069A
公开(公告)日：1996-04-16
申请号：US121294
申请日：1993-09-14
申请人： Luciano Tomasini , Rinaldo Castello
发明人： Luciano Tomasini , Rinaldo Castello
IPC分类号： H04M19/08 , H04M19/00
CPC分类号： H04M19/08
摘要： A circuit is provided in telecommunication terminal equipment for splitting a limited supply of current received from a subscriber's line current among a plurality of functional circuits according to their priority rank. The circuit uses a differential pair of current delivering transistors and a special circuit to monitor the actual current of absorption of at least the functional circuit of highest rank to produce a control signal that is used for modifying the drive conditions of the current delivering transistors. All current exceeding the actual absorption needs of the highest rank functional circuit is distributed to the other functional circuits and the prior art practice of sinking unneeded current through a dissipative shunt voltage regulator associated with each functional circuit is avoided. This same principle may be advantageously applied also to functional circuits of progressively lesser rank of priority.
摘要翻译：在电信终端设备中提供电路，用于根据用户的线路电流根据其优先级排列从用户线路电流接收的有限供电电流。该电路使用差分对的电流输送晶体管和专用电路来监视至少最高等级的功能电路的吸收的实际电流，以产生用于修改电流输送晶体管的驱动条件的控制信号。超过最高等级功能电路的实际吸收需求的全部电流被分配到其他功能电路，并且避免了通过与每个功能电路相关联的耗散分流稳压器吸收不需要的电流的现有技术的实践。该相同的原理也可以有利地应用于逐渐降低等级优先级的功能电路。

20. 发明授权

US5434535A RC filter for low and very low frequency applications 失效
标题翻译： RC滤波器适用于低频和极低频应用
公开(公告)号：US5434535A
公开(公告)日：1995-07-18
申请号：US97067
申请日：1993-07-23
申请人： Luciano Tomasini , Rinaldo Castello
发明人： Luciano Tomasini , Rinaldo Castello
IPC分类号： H03F1/34 , H03H7/06 , H03H11/04 , H03H11/12 , H04M1/00 , H03H11/46
CPC分类号： H03H11/12
摘要： An RC filter for low or very low frequency applications, comprising a resistor between the filter input and output, and an amplifier connected after the resistor and having an output fed back to the amplifier input through a capacitor. This simple design allows the known Miller Effect to be utilized to produce a filter having a high time constant while employing small-size components which occupy little space in integrated circuits.
摘要翻译：用于低频或非常低频应用的RC滤波器，包括滤波器输入和输出之间的电阻器，以及连接在电阻器之后的放大器，并且具有通过电容器反馈到放大器输入端的输出。这种简单的设计允许使用已知的米勒效应来生产具有高时间常数的滤波器，同时采用在集成电路中占据很小空间的小尺寸部件。

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