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    • 5. 发明授权
    • Modulator and frequency multiplier for use therein
    • 用于其中的调制器和倍频器
    • US5708399A
    • 1998-01-13
    • US674506
    • 1996-07-02
    • Ryota FujiiMasahiro TsukaharaMoriaki MizunoMinoru Takagi
    • Ryota FujiiMasahiro TsukaharaMoriaki MizunoMinoru Takagi
    • H03D7/14H03B19/14H03C3/14H03D7/16H03B19/10H03C3/00
    • H03D7/16
    • A modulator that effectively suppresses carrier leakage is disclosed. The modulator includes a frequency multiplier, a phase shifter and an orthogonal modulator. The frequency multiplier outputs complementary signals whose frequencies are twice the frequency of a first carrier signal. The phase shifter divides the frequencies of the output signals of the frequency multiplier to produce a plurality of second carrier signals whose phases are shifted by 90 degrees from one another. The orthogonal modulator receives an input signal and the second carrier signals from the phase shifter and outputs signals obtained by combining the input signal with the second carrier signals. The frequency multiplier has an input circuit section including a differential circuit. The differential input section receives complementary signals as the first carrier signal. The orthogonal modulator has an output circuit section including a differential circuit.
    • 公开了一种有效抑制载流子泄漏的调制器。 调制器包括倍频器,移相器和正交调制器。 倍频器输出其频率是第一载波信号频率的两倍的互补信号。 移相器分频倍频器的输出信号的频率,产生相位彼此相差90度的多个第二载波信号。 正交调制器从移相器接收输入信号和第二载波信号,并输出通过将输入信号与第二载波信号组合而获得的信号。 倍频器具有包括差动电路的输入电路部分。 差分输入部分接收互补信号作为第一载波信号。 正交调制器具有包括差分电路的输出电路部分。