Phase-locked loop based on MEMS (Micro-electromechanical Systems) wideband phase detector
A phase detector and broadband technology, applied in the field of phase-locked loops, can solve problems such as the inability to meet the needs of broadband communication systems, and achieve the effects of novel structure, synchronous adjustment, and convenient operation.
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[0013] like figure 1 , 2 Shown in and 3, a kind of phase-locked loop based on MEMS broadband phase detector, comprises MEMS broadband phase detector, DC automatic gain control AGC amplifier, the first voltage-controlled oscillator VCO1, the second voltage-controlled oscillator VCO2, The first variable resistor R1 and the second variable resistor R2; the power supply V E The first voltage-controlled oscillator VCO1 is loaded through the first variable resistor R1, and the DC automatic gain control AGC amplifier is loaded through the second variable resistor R2 at the same time; the first voltage-controlled oscillator VCO1 generates a reference signal, by adjusting the first The size of a variable resistor R1 changes the control voltage V of the first voltage-controlled oscillator VCO1 C1 The reference signal and the feedback signal are respectively loaded to two symmetrical input ports formed by the ground wire 2 and the CPW signal wire 3 of the MEMS broadband phase detector,...
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