Howtosignalprocessing
- What is passband in the bandpass filter?
- What effect does the value of Q have on the frequency responses of the band pass filter circuit?
- How does bandpass filter work?
- What are the two types of bandpass filter?
What is passband in the bandpass filter?
A passband is the range of frequencies or wavelengths that can pass through a filter. For example, a radio receiver contains a bandpass filter to select the frequency of the desired radio signal out of all the radio waves picked up by its antenna.
What effect does the value of Q have on the frequency responses of the band pass filter circuit?
The “Q” or Quality Factor
This Q Factor is a measure of how “Selective” or “Un-selective” the band pass filter is towards a given spread of frequencies. The lower the value of the Q factor the wider is the bandwidth of the filter and consequently the higher the Q factor the narrower and more “selective” is the filter.
How does bandpass filter work?
In a receiver, a bandpass filter allows signals within a selected range of frequencies to be heard or decoded, while preventing signals at unwanted frequencies from getting through. A bandpass filter also optimizes thesignal-to-noise ratio (sensitivity) of a receiver.
What are the two types of bandpass filter?
Bandpass filters are categorized into two types: wide bandpass filter and narrow bandpass filter.
