Amplifier circuit improved in linearity and frequency band
    2.
    发明公开
    Amplifier circuit improved in linearity and frequency band 审中-公开
    放大器电路具有可调节的线性度和扩展频带

    公开(公告)号:EP1755215A2

    公开(公告)日:2007-02-21

    申请号:EP06017070.1

    申请日:2006-08-16

    IPC分类号: H03F1/22 H03F1/32

    摘要: An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transistor bias unit, and an auxiliary transistor bias unit. The main transistor bias unit comprises a first bias resistor. The auxiliary transistor bias unit comprises a second bias resistor. The feedback block comprises first and second feedback resistors, and the output block comprises an output resistor and an output transistor.

    摘要翻译: 一种放大器电路,在放大功能块(310),反馈块的线性度和频带-包括和输出块的改善。 放大组块(310)包括主晶体管(MN31)到辅助晶体管(MN32),第一电容器(C31),第二电容器(C32),主晶体管偏置单元(321),和向辅助晶体管偏置单元 (322)。 主晶体管偏置单元(321)包括第一偏置电阻(RB31)。 辅助晶体管偏置单元(322)包括第二偏置电阻(RB32)。 反馈块(320)包括第一(R31)和第二(R32)反馈电阻,和输出块(330)(溃败)输出电阻器包括和输出晶体管(MNOUT)。

    Tuning circuit
    3.
    发明公开
    Tuning circuit 审中-公开
    调音

    公开(公告)号:EP1722476A3

    公开(公告)日:2006-12-06

    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).

    Zero-IF tuner for digital multimedia broadcasting
    4.
    发明公开
    Zero-IF tuner for digital multimedia broadcasting 审中-公开
    多媒体Rundfunk的数字化技术

    公开(公告)号:EP1657919A1

    公开(公告)日:2006-05-17

    申请号:EP05110214.3

    申请日:2005-10-31

    IPC分类号: H04N5/44 H04B1/30

    摘要: The present invention relates to a receiver, and more particularly, to a Zero-IF receiving apparatus for digital multimedia broadcasting (DMB). The Zero-IF receiver for DMB according to the present invention comprises a first receiver that comprises a first mixer, a first Low-Pass Filter (LPF) and a first Low-Noise Amplifier (LNA) and forms an I channel, a second receiver that comprises a second mixer, a second LPF and a second LNA and forms a Q channel, a Phase Locked Loop (PLL), a Local Oscillator (LO) and a Phase Local Oscillator (PLO). An input terminal of each of the first mixer of the first receiver and an input terminal of the second mixer of the second receiver are connected to an output terminal of a LNA that amplifies a satellite frequency signal. Furthermore, an input terminal of the first mixer of the first receiver and an input terminal of the second mixer of the second receiver are connected to output terminals of the PLL, the LO and the PLO.

    摘要翻译: 本发明涉及一种接收机,更具体地说,涉及一种用于数字多媒体广播(DMB)的零中频接收装置。 根据本发明的用于DMB的零中频接收机包括第一接收机,其包括第一混频器,第一低通滤波器(LPF)和第一低噪声放大器(LNA),并形成I信道,第二接收机 其包括第二混频器,第二LPF和第二LNA,并形成Q通道,锁相环(PLL),本地振荡器(LO)和相位本振荡器(PLO)。 第一接收机的第一混频器和第二接收机的第二混频器的输入端的输入端连接到放大卫星频率信号的LNA的输出端。 此外,第一接收机的第一混频器的输入端和第二接收机的第二混频器的输入端连接到PLL,LO和PLO的输出端。

    Amplifier circuit improved in linearity and frequency band
    8.
    发明公开
    Amplifier circuit improved in linearity and frequency band 审中-公开
    放大器电路在线性和频带上有所改善

    公开(公告)号:EP1755215A3

    公开(公告)日:2007-09-05

    申请号:EP06017070.1

    申请日:2006-08-16

    IPC分类号: H03F1/22 H03F1/32 H03F1/34

    摘要: An amplifier circuit improved in linearity and frequency band comprises an amplification block (310), a feedback block and an output block. The amplification block (310) comprises a main transistor (MN31), an auxiliary transistor (MN32), a first capacitor (C31), a second capacitor (C32), a main transistor bias unit (321), and an auxiliary transistor bias unit (322). The main transistor bias unit (321) comprises a first bias resistor (Rb31). The auxiliary transistor bias unit (322) comprises a second bias resistor (Rb32). The feedback block (320) comprises first (R31) and second (R32) feedback resistors, and the output block (330) comprises an output resistor (Rout) and an output transistor (MNout).

    摘要翻译: 线性和频带改进的放大器电路包括放大块(310),反馈块和输出块。 放大模块310包括主晶体管MN31,辅助晶体管MN32,第一电容器C31,第二电容器C32,主晶体管偏置单元321以及辅助晶体管偏置单元 (322)。 主晶体管偏置单元(321)包括第一偏置电阻器(Rb31)。 辅助晶体管偏置单元(322)包括第二偏置电阻器(Rb32)。 反馈块(320)包括第一(R31)和第二(R32)反馈电阻器,并且输出块(330)包括输出电阻器(Rout)和输出晶体管(MNout)。

    Terrestrial-digital multimedia broadcasting and digital audio broadcasting low intermediate frequency receiver
    9.
    发明公开
    Terrestrial-digital multimedia broadcasting and digital audio broadcasting low intermediate frequency receiver 审中-公开
    T-DMB-和DAB-Empfängermit Niedriger Zwischenfrequenz

    公开(公告)号:EP1753232A1

    公开(公告)日:2007-02-14

    申请号:EP06118840.5

    申请日:2006-08-11

    IPC分类号: H04N5/44 H04B1/06

    摘要: Provided is a terrestrial-digital multimedia broadcasting (T-DMB) and digital audio broadcasting (DAB) low intermediate frequency (IF) receiver. A T-DMB and DAB low 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, and a phase-locked loop 209. Particularly, the LNA, the image rejection down-conversion mixer, the low pass filter, the amplifier, the local oscillator, and the phase-locked loop are integrated in a monolithic semiconductor integrated circuit substrate. Using the T-DMB and DAB low IF receiver allows a removal of a conventional SAW filter and the T-DMB and DAB low IF receiver can be easily integrated in the monolithic semiconductor integrated circuit substrate, and manufactured at low costs.

    摘要翻译: 提供了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。 T-DMB和DAB低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和锁相环209 特别地,LNA,图像抑制下变频混频器,低通滤波器,放大器,本地振荡器和锁相环集成在单片半导体集成电路基板中。 使用T-DMB和DAB低IF接收器可以去除传统的SAW滤波器,T-DMB和DAB低IF接收器可以轻松地集成在单片半导体集成电路基板中,并以低成本制造。

    Automatic frequency control loop circuit
    10.
    发明公开
    Automatic frequency control loop circuit 审中-公开
    费尔蒙特自动化公司

    公开(公告)号:EP1748559A1

    公开(公告)日:2007-01-31

    申请号:EP06014475.5

    申请日:2006-07-12

    发明人: Jeong, Minsu

    IPC分类号: H03J7/06

    CPC分类号: H03J7/065 H03L7/197

    摘要: Provided is a frequency control loop circuit changing division ratios of a frequency synthesizer to oscillate frequencies in a broadband with high precision. The circuit comprises a clock oscillator, a frequency synthesizer, and a demodulator.

    摘要翻译: 提供了一种频率控制环路电路,其改变频率合成器的分频比,以高精度振荡宽带中的频率。 电路包括时钟振荡器,频率合成器和解调器。