摘要：Phase Locked Loop (PLL) or Phase Locked Ring is a feedback circuit that cangenerate a stable frequency. With the slip frequency divider circuits feedback,the PLL can generate a large frequency multiples of the frequency reference.PLL applications nowadays increasingly widespread, especially after thediscovery of the PLL chip. Final project entitled Tracking The frequency of 88MHz - 108 MHz PLL Using this is one form of PLL applications. Basically thismeans tracking model using superheterodyne receiver having a local oscillatorat the receiver. In this tool, it will provide the local oscillator frequency ofsuccessive increases or decreases until the voltage level of signal obtained morethan a certain level. When the signal is obtained that exceeds those levels,frequency of stops and equipment to be locked at that frequency until the signalis lost or reset.
