公开(公告)号：US08380155B1

公开(公告)日：2013-02-19

申请号：US13434920

申请日：2012-03-30

Applicant: Fernando De Bernardinis ,  Rinaldo Castello

Inventor： Fernando De Bernardinis ,  Rinaldo Castello

IPC: H04B1/10

CPC classification number: H04B1/18 ,  H03F2200/91 ,  H03F2203/45026 ,  H03H11/1213 ,  H03H11/1291

Abstract: Aspects of the disclosure can provide a second order low pass filter. The second order low pass filter can work in current domain, and have high linearity for in-band signals and out-of-band signals. The second order low pass filter can include a MOS transistor having a gate terminal, a current input terminal and a current output terminal, a first capacitor coupled between the current input terminal and a ground connection and a second capacitor coupled between the gate terminal and the current input terminal.

Abstract translation: 本公开的方面可以提供二阶低通滤波器。 二阶低通滤波器可以在当前领域工作，并且对于带内信号和带外信号具有高线性度。 二阶低通滤波器可以包括具有栅极端子，电流输入端子和电流输出端子的MOS晶体管，耦合在电流输入端子和接地连接器之间的第一电容器和耦合在栅极端子和电流输出端子之间的第二电容器 电流输入端子。

公开(公告)号：US08164383B1

公开(公告)日：2012-04-24

申请号：US12896586

申请日：2010-10-01

Applicant: Alex Lollio ,  Giacomino Bollati ,  Rinaldo Castello

Inventor： Alex Lollio ,  Giacomino Bollati ,  Rinaldo Castello

IPC: H03F1/14

CPC classification number: H03F3/2173 ,  H03F1/303 ,  H03F1/3205 ,  H03F2200/78 ,  H03K17/166

Abstract: In one embodiment, the present disclosure includes an amplifier comprising first and second output stages. The first output stage receives first power supply voltages and the second output stage receives second power supply voltages greater than the first power supply voltages. A switching stage configures the output stages to provide a first current to an amplifier output node from the first output stage when a magnitude of a voltage on the output node is below a first value, provide a second current to the output node from the second output stage when the magnitude of the voltage on the output node is above a second value greater than the first value, and provide a third current to the output node from both the first output stage and the second output stage when the magnitude of the voltage on the output node is between the first value and the second value.

Abstract translation: 在一个实施例中，本发明包括一个包括第一和第二输出级的放大器。 第一输出级接收第一电源电压，第二输出级接收大于第一电源电压的第二电源电压。 当输出节点上的电压的大小低于第一值时，开关级配置输出级以从第一输出级向放大器输出节点提供第一电流，从第二输出向输出节点提供第二电流 当输出节点上的电压的大小高于大于第一值的第二值，并且当第一输出节点上的电压的大小在第一输出级和第二输出级的电压的大小时，将第三电流提供给输出节点 输出节点在第一个值和第二个值之间。

公开(公告)号：US06392471B1

公开(公告)日：2002-05-21

申请号：US09766890

申请日：2001-01-19

Applicant: Luciano Tomasini ,  Jesus Guinea ,  Rinaldo Castello

Inventor： Luciano Tomasini ,  Jesus Guinea ,  Rinaldo Castello

IPC: G05F110

CPC classification number: G05F3/242 ,  G05F3/262

Abstract: The generator includes complementary MOS transistors interconnected in four circuit branches one of which contains a constant-current generator. Voltages picked up at various nodes of the circuit can be used as reference and/or biasing voltages of the integrated circuit, which account for the variability of the manufacturing parameters.

Abstract translation: 发生器包括在四个电路分支中互连的互补MOS晶体管，其中一个包含恒流发生器。 在电路的各个节点处拾取的电压可以用作集成电路的参考和/或偏置电压，其考虑了制造参数的变化。

公开(公告)号：US06380789B1

公开(公告)日：2002-04-30

申请号：US09060617

申请日：1998-04-15

Applicant: Andrea Baschirotto ,  Guido Brasca ,  Rinaldo Castello ,  Giampiero Montagna

Inventor： Andrea Baschirotto ,  Guido Brasca ,  Rinaldo Castello ,  Giampiero Montagna

IPC: G06G718

CPC classification number: G06G7/12 ,  H03F3/72 ,  H03F2203/7215

Abstract: A switched input circuit structure of the type which includes an input terminal receiving an input voltage and an output terminal connected to an input capacitor. An operational amplifier is included having a non-inverting terminal connected to a ground reference terminal, an inverting input terminal, and an output terminal feedback connected to the inverting input terminal and held in a virtual ground condition by a parallel of first and second charge paths which are connected between the input terminal of the switched input circuit structure and the inverting input terminal of the operational amplifier and connected to the supply voltage reference and the ground reference, respectively.

Abstract translation: 一种切换输入电路结构，其类型包括接收输入电压的输入端和连接到输入电容的输出端。 包括运算放大器，其具有连接到接地参考端子的非反相端子，反相输入端子和连接到反相输入端子的输出端子反馈，并且通过第一和第二充电路径的并联保持在虚拟接地状态 它们连接在开关输入电路结构的输入端和运算放大器的反相输入端之间，分别连接到电源电压基准和接地基准。

公开(公告)号：US5745002A

公开(公告)日：1998-04-28

申请号：US326107

申请日：1994-10-19

Applicant: Andrea Baschirotto ,  Rinaldo Castello ,  Federico Montecchi ,  Angelo Nagari

Inventor： Andrea Baschirotto ,  Rinaldo Castello ,  Federico Montecchi ,  Angelo Nagari

IPC: H03F3/45 ,  H03H19/00 ,  H03K11/00 ,  H03K5/00

CPC classification number: H03H19/00

Abstract: A switched capacitance circuit, using a switched operational amplifier structure as an input switch of the switched capacitance, is provided with a new biasing circuit. An additional switched capacitor, switched alternately to power supply and to ground, is connected to the output side of the primary switched capacitor. Precision is retained while ensuring a rail-to-rail dynamic range, without requiring boosted control phases. Special arrangements may be implemented for controlling the amplitude of switching spikes when so required. A fully differential embodiment is also feasible with additional advantages.

Abstract translation: 使用开关运算放大器结构作为开关电容的输入开关的开关电容电路设置有新的偏置电路。 另一个开关电容器交替地切换到电源和地，连接到初级开关电容器的输出侧。 在保证轨到轨动态范围的同时保持精度，而无需增强控制阶段。 当需要时，可以实施用于控制开关尖峰的幅度的特殊布置。 完全差异化的实施例也是可行的，具有额外的优点。

公开(公告)号：US5710811A

公开(公告)日：1998-01-20

申请号：US633843

申请日：1996-04-10

Applicant: Luciano Tomasini ,  Rinaldo Castello ,  Ivan Bietti ,  Giancarlo Clerici

Inventor： Luciano Tomasini ,  Rinaldo Castello ,  Ivan Bietti ,  Giancarlo Clerici

IPC: H04B1/58 ,  H04M1/58 ,  H04M1/76 ,  H04M1/00

CPC classification number: H04M1/585 ,  H04B1/586 ,  H04M1/76

Abstract: The speech circuit matches the impedance of the telephone line by synthesizing a complex impedance using a positive feedback loop which has a single resistor (11), and cancels out the side tone using a subtractor (20') which extracts from the signal (Va) coming from the line a signal (Vb) correlated to the signal to be transmitted. In order to achieve cancellation of the side tone unaffected by the noise produced in the impedance synthesizing circuits, the signal (Vb) is derived by processing the signal present in the resistor (11) at the output of the feedback loop.

Abstract translation: 语音电路通过使用具有单个电阻器（11）的正反馈回路合成复阻抗来匹配电话线路的阻抗，并且使用从信号（Va）提取的减法器（20'）来消除侧音， 来自线路与要发送的信号相关的信号（Vb）。 为了实现不受阻抗合成电路中产生的噪声影响的侧音的消除，通过在反馈环路的输出端处理存在于电阻器（11）中的信号来导出信号（Vb）。

公开(公告)号：US5696457A

公开(公告)日：1997-12-09

申请号：US454649

申请日：1995-05-31

Applicant: Francesco Rezzi ,  Andrea Baschirotto ,  Rinaldo Castello

Inventor： Francesco Rezzi ,  Andrea Baschirotto ,  Rinaldo Castello

IPC: H03F3/45 ,  H03K5/22

CPC classification number: H03F3/45964 ,  H03F3/45278 ,  H03F3/45717 ,  H03F2203/45024 ,  H03F2203/45068 ,  H03F2203/45078 ,  H03F2203/45394 ,  H03F2203/45648

Abstract: A low-voltage transconductor circuit in which the common mode gain of a first transconductor stage is compensated by a second transconductor stage (connected in parallel with the first transconductor stage) which has no differential mode transconductance, and which is connected so that its common mode transconductance offsets the common mode transconductance of the stage. This greatly reduces the common mode current signal at the output, while avoiding the necessity for a current sink at the source of the input transistors.

Abstract translation: 一种低压跨导电路，其中第一跨导级的共模增益由不具有差分晶体跨导的第二跨导级（与第一跨导级并联连接）补偿，并且其连接使得其共模 跨导抵消了该级的共模跨导。 这大大降低了输出端的共模电流信号，同时避免了在输入晶体管的源极处的电流吸收器的必要性。

公开(公告)号：US5430337A

公开(公告)日：1995-07-04

申请号：US105736

申请日：1993-08-12

Applicant: Rinaldo Castello ,  Roberto Alini ,  Francesco Rezzi ,  Valerio Pisati

Inventor： Rinaldo Castello ,  Roberto Alini ,  Francesco Rezzi ,  Valerio Pisati

IPC: H03F1/32 ,  H03F3/45 ,  H03H11/04 ,  H03K17/60 ,  G06G7/12

CPC classification number: H03F1/3211 ,  H03F3/45076 ,  H03F3/45282

Abstract: A transconductor stage for high-frequency filters of a type which comprises an input circuit portion having signal inputs and an output circuit portion, incorporates a pair of field-effect transistors having respective gate and source terminals in common, and has the output portion formed of a pair of bipolar transistors connected to the aforesaid field-effect transistors.

Abstract translation: 一种用于包括具有信号输入的输入电路部分和输出电路部分的类型的高频滤波器的跨导级，包括一对共同具有各自的栅极和源极端子的场效应晶体管，并且具有由 连接到上述场效应晶体管的一对双极晶体管。

公开(公告)号：US08868015B2

公开(公告)日：2014-10-21

申请号：US12782848

申请日：2010-05-19

Applicant: Gregory Uehara ,  Chao Yang ,  Ruoxin Jiang ,  Fernando De Bernardinis ,  Alessandro Venca ,  Rinaldo Castello ,  Marc Leroux ,  Brian Brunn

Inventor： Gregory Uehara ,  Chao Yang ,  Ruoxin Jiang ,  Fernando De Bernardinis ,  Alessandro Venca ,  Rinaldo Castello ,  Marc Leroux ,  Brian Brunn

IPC: H04B1/04 ,  H04B1/00

CPC classification number: H04B1/0071

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US6031416A

公开(公告)日：2000-02-29

申请号：US67127

申请日：1998-04-27

Applicant: Andrea Baschirotto ,  Ugo Baschirotto ,  Guido Brasca ,  Rinaldo Castello

Inventor： Andrea Baschirotto ,  Ugo Baschirotto ,  Guido Brasca ,  Rinaldo Castello

IPC: H03H11/04 ,  H03K5/00

CPC classification number: H03H11/04

Abstract: 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.

Abstract translation: 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。