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为了提高毫米波锁相接收机的灵敏度和稳定性,必须尽力抑制噪声和寄生调制的影响。由电源纹波所产生的寄生调幅、调频在锁相接收机环路中难以抑制,
In order to improve the sensitivity and stability of the millimeter-wave phase-locked receiver, the influence of noise and parasitic modulation must be suppressed as much as possible. The parasitic AM and FM generated by the power ripple are difficult to suppress in the PLL of the phase locked loop.