{blockLibraryPP_blocksPP_FF_RFSS_BlocksetFF_IdealizedSS_BasebandFF_FilterPP_label}
A filter of complex RF broadband signals.
blockType: Filter
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Description
Unit {blockLibraryPP_blocksPP_FF_RFSS_BlocksetFF_IdealizedSS_BasebandFF_FilterPP_label} is a filter for complex radio frequency (RF) broadband signals. You can use the Butterworth, Chebyshev, or inverse Chebyshev methods to design the filter. You can also model the filter in the time or frequency domain and plot its characteristics.
Optional
Algorithms
Determination of FIR filter coefficients
The programme calculates the coefficients of the discrete FIR filter using the parameters RF frequency (Hz) и *FIR filter length*and the transfer function defined using the obtained poles and zeros of the filter.
To determine the coefficients of the direct form of the Discrete FIR Filter block, the following steps are performed:
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Determines the frequency points that are in the passband centred around the carrier frequency using this formula.
where
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- is the carrier frequency, in Hz.
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- is the length of the FIR filter.
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- is the time step of the filter.
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Determines the transfer function values for the frequency points specified in step 1 using this formula.
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Determines the coefficients of the discrete FIR filter using this formula