Fir Filter Model
A filter frequency response modeled using an nth order polynomial with a given set of complex coefficients.
Parameter | Description |
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Upper Bandwidth Limit | The filter’s upper limit on the power spectrum. The bandwidth limit is relative to the carrier frequency (the carrier being at zero Hz), and is specified as a positive value. The upper limit is considered to be a sharp cutoff point and the spectrum is zero beyond the limit. |
Lower Bandwidth Limit | The filter’s lower limit on the power spectrum. The bandwidth limit is relative to the carrier frequency and is specified as a negative value. The lower limit is considered to be a sharp cutoff point and the spectrum is zero beyond the limit. |
Bandwidth | A read-only field equal to the difference between Upper Bandwidth Limit and Lower Bandwidth Limit. It is the total spectral bandwidth over which the filter has a defined response. The filter will only compute over frequencies that are in its defined response; outside its defined response, complete attenuation occurs. |
Insertion Loss | A fixed signal attenuation with the spectrum loss computed by the filter’s response characteristics. |
Sampling Frequency | The rate at which the discrete filter is sampling the input signal. |
Polynomial Coefficients | The complex coefficients of the nth order polynomial used to model filter frequency response characteristics. |