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This paper presents the simulation results of a conventional IFM correlator. The microwave correlator that acts as the frequency measurement mechanism of the IFM receiver was designed at 4 GHz. The structure of the correlator components such as the delay line and the Wilkinson power divider were designed to be realized in microstrip line form using the Agilent's Advanced Design System (ADS) software. The designed correlator managed to track instantaneously the RF input signal from 2 to 5 GHz