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
22k?, 47?, 45k?, and 470? 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