Receiver and amplification-gain controlling device thereof
    21.
    发明公开
    Receiver and amplification-gain controlling device thereof 审中-公开
    EmpfangsgerätundzugehörigeVerstärkungsregelungsvorrichtung

    公开(公告)号:EP1895657A1

    公开(公告)日:2008-03-05

    申请号:EP07114637.7

    申请日:2007-08-20

    IPC分类号: H03G3/30

    CPC分类号: H03G3/3068

    摘要: The receiver comprises a variable gain amplification unit, a mixing unit, a filtering unit, and three compensation unit. Each compensation unit detects powers of the signal amplified in the variable gain amplification unit, the signal down-converted in the mixing unit and the signal filtered in the filtering unit. A gain of the variable gain amplification unit is adjusted based on the powers detected by three compensation units.

    摘要翻译: 接收机包括可变增益放大单元,混合单元,滤波单元和三个补偿单元。 每个补偿单元检测在可变增益放大单元中放大的信号的功率,在混合单元中被下变频的信号和在滤波单元中滤波的信号。 基于由三个补偿单元检测的功率来调整可变增益放大单元的增益。

    Parallel varactor capacitor
    22.
    发明公开
    Parallel varactor capacitor 审中-公开
    并联变容管电容器

    公开(公告)号:EP1881531A2

    公开(公告)日:2008-01-23

    申请号:EP07112713.8

    申请日:2007-07-18

    发明人: Kim, Seyeob

    IPC分类号: H01L27/08

    摘要: Provided is a parallel-varactor capacitor. The capacitor comprises a first varactor and a second varactor. The first varactor has a first capacitance which varies depending on voltages applied to a first anode and a first cathode. The second varactor has a second capacitance which varies depending on voltages applied to a second anode and a second cathode. The first anode is connected to the second cathode and the first cathode is connected to the second anode.

    摘要翻译: 提供了一个并联变容二极管电容器。 电容器包括第一变容二极管和第二变容二极管。 第一变容二极管具有第一电容,该第一电容根据施加到第一阳极和第一阴极的电压而变化。 第二变容二极管具有第二电容,该第二电容根据施加到第二阳极和第二阴极的电压而变化。 第一阳极连接到第二阴极,第一阴极连接到第二阳极。

    RFID reader and RFID system
    24.
    发明公开
    RFID reader and RFID system 审中-公开
    RFID-Leser和RFID系统

    公开(公告)号:EP1816581A1

    公开(公告)日:2007-08-08

    申请号:EP06022620.6

    申请日:2006-10-30

    IPC分类号: G06K7/00

    摘要: Provided are a radio frequency identification (RFID) reader and a RFID system. Particularly, the RFID reader uses a listen before talk (LBT) mode to identify. A reader for RFID comprises a data path block receiving a tag data signal, a search path block receiving a channel search signal, and a path selection block selecting one of the data path block and the search path block.

    摘要翻译: 提供了射频识别(RFID)读取器和RFID系统。 特别地,RFID读取器使用听话(LBT)模式来识别。 用于RFID的读取器包括接收标签数据信号的数据路径块,接收信道搜索信号的搜索路径块和选择数据路径块和搜索路径块之一的路径选择块。

    T-DMB and DAB low intermediate frequency receiver
    26.
    发明公开
    T-DMB and DAB low intermediate frequency receiver 审中-公开
    Niedrige-ZwischenfrequenzEmpfängerfürT-DMB und DAB

    公开(公告)号:EP1753236A1

    公开(公告)日:2007-02-14

    申请号:EP06118844.7

    申请日:2006-08-11

    IPC分类号: H04N5/53 H04B1/06 H04H1/00

    摘要: A terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver comprises a low noise amplifier (LNA) 202, an image rejection down-conversion mixer 203, a low pass filter 204, an amplifier 205, a local oscillator 208, a phase-locked loop 209, and an automatic gain controller (AGC) 211. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the AGC, the local oscillator, and the phase-locked loop are integrated in monolithic semiconductor integrated circuit substrate. The AGC supplies a gain control signal to the LNA and the amplifier according to the magnitude of the RF signal, and the gain control signal is controlled by a null control signal based on a null signal comprised in a received radio frequency (RF) signal.

    摘要翻译: 地面数字多媒体广播(T-DMB)和数字音频广播(DAB)低中频(IF)接收机包括低噪声放大器(LNA)202,镜像抑制下变频混频器203,低通滤波器204, 放大器205,本地振荡器208,锁相环209和自动增益控制器(AGC)211.特别地,LNA,图像抑制下变频混频器,低通滤波器,放大器,AGC, 本地振荡器和锁相环集成在单片半导体集成电路基板中。 AGC根据RF信号的大小向LNA和放大器提供增益控制信号,并且基于包含在接收的射频(RF))信号中的零信号,通过零控制信号来控制增益控制信号。

    Tuning circuit
    27.
    发明公开
    Tuning circuit 审中-公开
    Abstimmschaltung

    公开(公告)号:EP1722476A2

    公开(公告)日:2006-11-15

    申请号:EP06009889.4

    申请日:2006-05-12

    IPC分类号: H03J5/00 H03H11/12

    CPC分类号: H03H11/1291

    摘要: A tuning circuit of a filter is disclosed to correct a cut-off frequency of the filter. The tuning circuit comprises a current generation unit (210) which includes a first transistor (MN21) and a resistor (R), and a capacitor compensation unit (220) which includes a second transistor (MN22) and a capacitor unit (223).

    摘要翻译: 公开了一种滤波器的调谐电路来校正滤波器的截止频率。 调谐电路包括:包括第一晶体管(MN21)和电阻器(R)的电流产生单元(210),以及包括第二晶体管(MN22)和电容器单元(223)的电容补偿单元(220)。

    Amplifier circuit having improved linearity and frequency band using a MGTR
    28.
    发明公开
    Amplifier circuit having improved linearity and frequency band using a MGTR 有权
    通过MGTR的手段放大器电路具有改进的线性度和宽的频带

    公开(公告)号:EP1672782A1

    公开(公告)日:2006-06-21

    申请号:EP05110833.0

    申请日:2005-11-16

    摘要: Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor (MN31) and an auxiliary transistor (MN32), an attenuation unit including inductors (L31) respectively connected to the source of the main transistor (MN31) and the source of the auxiliary transistor (MN32), a capacitor (C31) connected at one end thereof to the sources of the main transistor (MN31) and auxiliary transistor (MN32) and connected at the other end thereof to the gates of the main transistor (MN31) and auxiliary transistor (MN32), and an output unit (R31) connected to the drains of the main transistor (MN31) and auxiliary transistor (MN32).

    摘要翻译: 公开于是具有改进的线性度和频带-使用MGTR的放大器电路。 放大器电路放大单元上分别包括:包括主晶体管(MN31)和辅助晶体管的(MN32),以连接到主晶体管的源极(MN31)和辅助晶体管的源极(衰减单元,其包括电感器(L31) MN32),电容器(C31)在其一端处连接到主晶体管(MN31)和辅助晶体管(MN32),并在其另一端与主晶体管(MN31)和辅助晶体管的栅极连接的源( 晶体管MN32)和输出单元(R31)连接到所述主晶体管(MN31)和辅助(MN32)的漏极。

    Differential amplifier circuit and mixer circuit having improved linearity
    29.
    发明公开
    Differential amplifier circuit and mixer circuit having improved linearity 审中-公开
    Differentialzverstärkerschaltungund Mischerschaltung mit verbesserterLinearität

    公开(公告)号:EP1622260A2

    公开(公告)日:2006-02-01

    申请号:EP05016435.9

    申请日:2005-07-28

    IPC分类号: H03F3/45

    摘要: The present invention relates to a differential amplifier and a mixer for improving the linearity. The differential amplifier circuit according to this present invention, includes first and second load stages each having a predetermined voltage value, a main differential amplifier unit having a first differential stage that forms a differential pair in such a way as to amplify a difference between a first input voltage and a second input voltage, and a constant current source, which has a predetermined current driving capability and is connected serially between a power source voltage terminal and a ground terminal, and a auxiliary differential amplifier unit having a second differential stage that forms a differential pair in such a way as to amplify a difference between a third input voltage and a fourth input voltage connected between the first load stage and a second load stage, and the ground, respectively.

    摘要翻译: 本发明涉及一种用于提高线性度的差分放大器和混频器。 根据本发明的差分放大器电路包括具有预定电压值的第一和第二负载级,具有形成差分对的第一差分级的主差分放大器单元,以便放大第一和第二负载级之间的差异 输入电压和第二输入电压,以及恒定电流源,其具有预定的电流驱动能力并且串联地连接在电源电压端子和接地端子之间;以及辅助差分放大器单元,具有形成第二差分级的辅助差分放大器单元 差分对以分别放大连接在第一负载级与第二负载级之间的第三输入电压与第四输入电压之间的差的方式和地。

    READER FOR RFID AND RFID SYSTEM
    30.
    发明公开
    READER FOR RFID AND RFID SYSTEM 有权
    RFID读写器和RFID系统

    公开(公告)号:EP1808796A3

    公开(公告)日:2008-12-10

    申请号:EP06124045.3

    申请日:2006-11-14

    IPC分类号: G06K7/00

    CPC分类号: G06K7/0008

    摘要: Provided is a reader (120) for radio frequency identification (RFID) and a RFID system. A reader for RFID that receives a channel signal comprises a frequency oscillator (201) generating an oscillating signal at a frequency that is offset by an offset frequency from a center frequency of the channel signal, a mixer (202) mixing the channel signal with the oscillating signal that is offset, and a filter (203) filtering a mixed frequency signal provided from the mixer. The reader for RFID and the RFID system are improved in reception for the wave identification using a listen before talk (LBT) mode for identifying an electronic tag.