IMPLEMENTASI BAND PASS FILTER (BPF) SALLEN-KEY BUTTERWORTH UNTUK EKSTRAKSI DOPPLER TONE 500HZ PADA PENERIMA RADIO DIRECTION FINDER

ANANDA SOBA, ILVAN (2022) IMPLEMENTASI BAND PASS FILTER (BPF) SALLEN-KEY BUTTERWORTH UNTUK EKSTRAKSI DOPPLER TONE 500HZ PADA PENERIMA RADIO DIRECTION FINDER. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

The current advances in science and technology have affected all spheres of human life, including in the field of electronics. At this time the Band Pass Filter (BPF) is widely used in electronic devices as a filter or frequency filter that passes a frequency signal in a certain frequency range, namely passing a signal that is between a low frequency or Low Pass Filter (LPF) to a high frequency or High Pass Filter (HPF). This study aims to find out the calculation results from the 6th Order Band Pass Filter data at the 500Hz cutt-off. The design of the 6th order Sallen-Key Butterworth Band Pass Filter series consists of 2 series of 2nd order LPFs assembled in series so that 4th order LPFs are obtained, then 2nd order HPFs are assembled in series with 4th order LPFs so as to produce 6th order BPF. The Sallen-Key Band Pass Filter Simulation uses PSPICE software to obtain a magnitude response which will later appear in the form of a graph. Meanwhile, the actual implementation is carried out using electronic components that have been designed with a 6th order BPF circuit so that Vout is obtained and a magnitude response calculation is carried out. The test results of the Band Pass Filter circuit use capacitor passive components with a value of 10nF, then resistor passive components with values of 22kΩ, 47Ω, 45kΩ, and 470Ω and use the active components of op-amp IC LM741. The calculation results of the Band Pass Filter obtained an Av value of 0.4 and dB of -7.96 according to the 500Hz cut-off frequency. This tool is implemented as one of the component parts of the Radio Direction Finder receiver

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