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    • 4. 发明申请
    • Quadrature phase oscillator using complex coefficient filter
    • 使用复系数滤波器的正交相位振荡器
    • US20060284686A1
    • 2006-12-21
    • US11452719
    • 2006-06-14
    • Si-Bum JunSang-Keun ParkWoo-Yong Lee
    • Si-Bum JunSang-Keun ParkWoo-Yong Lee
    • H03L7/00
    • H03B27/00
    • A quadrature phase oscillator in a Radio Frequency (RF) transceiver Integrated Circuit (IC) is provided. The quadrature phase oscillator includes a voltage controlled oscillator and a filter. The voltage controlled oscillator provides an oscillating frequency for modulation of a transmission/reception signal according to an applied voltage. The filter receives the oscillating frequency from the voltage controlled oscillator as an input, passes one of a negative frequency component of the input oscillating frequency and a positive frequency component of the input oscillating frequency, attenuates the other frequency component, generates an I (In phase) signal that is in phase with the input oscillating frequency and a Q (Quadrature phase) signal having a phase difference of 90° with the input oscillating frequency for the passed frequency component, and outputs the I signal and the Q signal.
    • 提供射频(RF)收发器集成电路(IC)中的正交相位振荡器。 正交相位振荡器包括压控振荡器和滤波器。 压控振荡器根据施加的电压提供用于调制发送/接收信号的振荡频率。 滤波器接收来自压控振荡器的振荡频率作为输入,通过输入振荡频率的负频率分量和输入振荡频率的正频率分量之一,衰减另一频率分量,产生I(相位 )信号和与输入振荡频率成90°相位差的Q(正交相位)信号,并输出I信号和Q信号。