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    HIGH PERFORMANCE CMOS RADIO FREQUENCY RECEIVER
    2.
    发明申请
    HIGH PERFORMANCE CMOS RADIO FREQUENCY RECEIVER 有权
    高性能CMOS无线电频率接收器

    公开(公告)号：US20090191833A1

    公开(公告)日：2009-07-30

    申请号：US12021534

    申请日：2008-01-29

    申请人： Daniel L. Kaczman ,  Mohammed S. Alam ,  David L. Cashen ,  Lu M. Han ,  Mohammed Rachedine ,  Manish N. Shah

    发明人： Daniel L. Kaczman ,  Mohammed S. Alam ,  David L. Cashen ,  Lu M. Han ,  Mohammed Rachedine ,  Manish N. Shah

    IPC分类号： H04B1/10

    CPC分类号： H04B1/30 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03F1/301 ,  H03F3/195 ,  H03F3/211 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2200/294 ,  H03F2200/411 ,  H03F2203/45316 ,  H03F2203/45418 ,  H03F2203/45424 ,  H03F2203/45512 ,  H03F2203/45526 ,  H03F2203/45681 ,  H03F2203/45682 ,  H03K3/35625

    摘要： A high performance radio frequency receiver includes a low noise amplifier with large binary and stepped gain control range, controlled impedance, and enhanced blocker immunity, for amplifying and converting a radio frequency signal to a current; a pulse generator for generating in-phase and quadrature pulses; a crossover correction circuit and pulse shaper for controlling a crossover threshold of the pulses and interaction between in-phase and quadrature mixers; and a double balanced mixer for combining the RF signal with the pulses to generate an intermediate frequency or baseband zero intermediate frequency current-mode signal. The in-phase and quadrature pulses have a duty cycle of 20-35%. The intermediate frequency signal and second order harmonics may be filtered with a high frequency low pass filter and a current injected complex direct-coupled filter. Decreased die size, current drain, cost, and complexity, as well as improvements in gain, 1/f noise, noise figure, sensitivity, and linearity may result.

    摘要翻译： 高性能射频接收机包括具有大二进制和阶梯增益控制范围的低噪声放大器，受控阻抗和增强的阻塞抗扰度，用于放大和转换射频信号到电流; 用于产生同相和正交脉冲的脉冲发生器; 交叉校正电路和脉冲整形器，用于控制脉冲的交叉阈值以及同相和正交混频器之间的相互作用; 以及用于将RF信号与脉冲组合以产生中频或基带零中频频率电流模式信号的双平衡混频器。 同相和正交脉冲的占空比为20-35％。 中频信号和二次谐波可以用高频低通滤波器和注入电流的复合直流滤波器进行滤波。 降低管芯尺寸，电流消耗，成本和复杂性，以及增益，1 / f噪声，噪声系数，灵敏度和线性度的改善。