Passive Filter Diagram. The band pass filter will optimize the sensitivity of the receiver. A low pass filter is a circuit that can be designed to modify reshape or reject all unwanted high frequencies of an electrical signal and accept or pass only those signals wanted by the circuits designer.
As you can see in the diagram an rc low pass response is created by placing a resistor in series with the signal path and a capacitor in parallel with the load. The bode plot or frequency response curve above for a passive high pass filter is the exact opposite to that of a low pass filter. Band pass filters allow only a required band of frequencies to pass while rejecting signals at all frequencies above and below this band.
The band pass filter will optimize the sensitivity of the receiver.
Low pass filters do the opposite and are used to remove high frequency signals and allow through low frequency signals. The main usage of the low pass filter circuits is to avoid a c. Band pass filters allow only a required band of frequencies to pass while rejecting signals at all frequencies above and below this band. Even though if we add a low pass filter first and then the high pass filter it will never make changes in the output signal.
