| 摘要 |
An impulse phase detector system, containing a digital phase detector and a low-pass filter. It is characterised in that the output of the digital phase detector (CDF) is connected to the input of the digital signal level shifting system (UPP). The output of the latter is connected to the input of a transistor current-mode logic element (KP), which switches the current of the current source (ZP). The collectors of the transistors (T1 and T2) of the current-mode logic element (KP) are connected through parallel circuits, each of which consists of a low-pass filter, consisting of a resistor and a capacitor (C1), (R1 and C2, R2) with a positive power voltage source. They are also connected to the inputs of the differential amplifier (WR). |
