CIRCUIT FOR VARYING GAIN OF PREAMPLIFIER
    11.
    发明公开
    CIRCUIT FOR VARYING GAIN OF PREAMPLIFIER 有权
    SCHUNGUNG ZUR VERNDNDUNG DERVERSTÄRKUNGEINESVORVERSTÄRKERS

    公开(公告)号:EP1653607A1

    公开(公告)日:2006-05-03

    申请号:EP03817770.5

    申请日:2003-07-30

    Abstract: A gain switching circuit (3) that switches a conversion gain of a preamp (2), which outputs a voltage signal upon amplifying an output current of a photo-detecting element (1) that converts a burst-form optical signal into an electrical signal and with which a series circuit, formed with a first resistor (6) and a first switching element (9), and a series circuit, formed with a second resistor (7) and a second switching element (10), are connected in parallel to a feedback resistor (2B), generates an operating signal for closing the first switching element (9) within a first gain switching period and generates an operating signal for closing the second switching element (10) within a second gain switching period.

    Abstract translation: 一种增益切换电路(3),其切换前置放大器(2)的转换增益,该放大器(2)的转换增益在放大光电检测元件(1)的输出电流时输出,该光检测元件将突发形式的光信号转换为电信号 与第一电阻器(6)和第一开关元件(9)形成的串联电路和形成有第二电阻器(7)和第二开关元件(10)的串联电路并联连接 到反馈电阻器(2B),产生用于在第一增益切换周期内闭合第一开关元件(9)的操作信号,并产生用于在第一增益切换周期内关闭第二开关元件(10)的操作信号

    Multi-channel amplifier having programmable operational characteristics controlled with a serial interface
    12.
    发明授权
    Multi-channel amplifier having programmable operational characteristics controlled with a serial interface 有权
    具有由串行接口控制的可编程操作特性的多通道放大器

    公开(公告)号:US07505855B2

    公开(公告)日:2009-03-17

    申请号:US11040354

    申请日:2005-01-21

    CPC classification number: H03G3/001 H03G3/3026 H03G2201/103 H03G2201/502

    Abstract: An amplifier having programmable operational characteristics and a serial communications interface is fabricated on an integrated circuit (IC). The serial communications interface controls the operational characteristics, e.g., gain, frequency response, etc., of the amplifier. A multiplexer (MUX) may also be included on the IC and may be controlled by the serial communications interface. Status of the amplifier may also be obtained through the serial communications interface. The pin count of the IC package may be kept to a minimum by using the serial communications interface.

    Abstract translation: 在集成电路(IC)上制造具有可编程操作特性的放大器和串行通信接口。 串行通信接口控制放大器的操作特性,例如增益,频率响应等。 多路复用器(MUX)也可以被包括在IC上并且可以由串行通信接口来控制。 也可以通过串行通信接口获得放大器的状态。 使用串行通信接口可以将IC封装的引脚数保持在最小值。

    Multi-channel programmable gain amplifier controlled with a serial interface
    14.
    发明申请
    Multi-channel programmable gain amplifier controlled with a serial interface 有权
    多通道可编程增益放大器采用串行接口控制

    公开(公告)号:US20040167736A1

    公开(公告)日:2004-08-26

    申请号:US10374016

    申请日:2003-02-25

    CPC classification number: H03G3/001 H03G3/3026 H03G2201/103 H03G2201/502

    Abstract: A programmable gain amplifier (PGA) controlled through a serial communications interface are fabricated on an integrated circuit (IC). A multiplexer (MUX) may also be included on the IC. The serial communications interface controls the gain of the PGA, MUX channel selection, and other functions of the PGA. Status of the PGA may also be obtained through the serial communications interface. By using a serial communications interface, the pin count of the PGA IC package may be kept to a minimum.

    Abstract translation: 通过串行通信接口控制的可编程增益放大器(PGA)在集成电路(IC)上制造。 多路复用器(MUX)也可以包括在IC上。 串行通信接口控制PGA的增益,MUX通道选择和PGA的其他功能。 也可以通过串行通信接口获得PGA的状态。 通过使用串行通信接口,可以将PGA IC封装的引脚数保持在最小值。

    前置増幅器の利得切り替え回路
    15.
    发明申请
    前置増幅器の利得切り替え回路 审中-公开
    改变前置放大器的电路

    公开(公告)号:WO2005013480A1

    公开(公告)日:2005-02-10

    申请号:PCT/JP2003/009682

    申请日:2003-07-30

    Abstract: バースト状の光信号を電気信号に変換する受光素子(1)の出力電流を増幅し電圧信号を出力する前置増幅器(2)の帰還抵抗素子(2B)と並列に、第1の抵抗素子(6)と第1のスイッチング素子(9)による直列回路、および第2の抵抗素子(7)と第2のスイッチング素子(10)による直列回路をそれぞれ接続し、前置増幅器(2)の変換利得を切り替える利得切り替え回路(3)は、第1の利得切り替え期間内に第1のスイッチング素子(9)を閉路操作するための操作信号を生成し、第2の利得切り替え期間内に第2のスイッチング素子(10)を閉路操作するための操作信号を生成する。

    Abstract translation: 光检测器(1)将猝发形式的光信号转换为电信号并输出​​输出电流,并且具有反馈电阻元件(2B)的前置放大器(2)放大输出电流并输出电压信号。 反馈电阻元件(2B),第一电阻元件(6)和第一开关元件(9)的串联电路以及第二电阻元件(7)和第二开关元件(10)的串联电路被连接 与增益变化电路(3)并联,用于改变前置放大器(2)的转换增益。 增益变化电路(3)在第一增益变化周期期间产生关闭第一开关元件9的操作信号,以及在第二增益变化周期期间关闭第二开关元件(10)的操作信号。

    Circuit for varying gain of preamplifier
    19.
    发明授权
    Circuit for varying gain of preamplifier 失效
    改变前置放大器增益的电路

    公开(公告)号:US07598479B2

    公开(公告)日:2009-10-06

    申请号:US10566240

    申请日:2003-07-30

    Abstract: A gain switching circuit switches a conversion gain of a preamplifier that is configured with a series circuit formed with a first resistor and a first switching element and a series circuit formed with a second resistor and a second switching element respectively connected in parallel with a feedback resistor. The gain switching circuit includes a first operating unit that generates a first switching element operating signal for closing the first switching element within a first gain switching period, and a second operating unit that generates a second switching element operating signal for closing the second switching element within a second gain switching period.

    Abstract translation: 增益切换电路切换配置有由第一电阻器和第一开关元件形成的串联电路的前置放大器的转换增益,以及与分别与反馈电阻并联连接的第二电阻器和第二开关元件形成的串联电路 。 增益切换电路包括第一操作单元,其在第一增益切换周期内产生用于闭合第一开关元件的第一开关元件操作信号,以及第二操作单元,其产生用于闭合第二开关元件的第二开关元件操作信号 第二增益切换周期。

    Method for controlling power level of received signal in ultra wide band transmission system
    20.
    发明授权
    Method for controlling power level of received signal in ultra wide band transmission system 失效
    控制超宽带传输系统接收信号功率电平的方法

    公开(公告)号:US07260374B2

    公开(公告)日:2007-08-21

    申请号:US10841591

    申请日:2004-05-06

    Abstract: Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

    Abstract translation: 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法,包括预增益控制器(PGC)和电压增益放大器(VGA)。 用于控制接收信号的功率电平的方法包括以下步骤:a)在PGC检测在传输系统的发射机中使用哪个多频带; b)在PGC处,由于接收到的信号的功率电平的差异而获得电压增益; 和c)在PGC处,基于电压增益来补偿功率损耗。

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