## Bessel Filter Prototype Element ValuesThe table below lists prototype element values for the normalized lowpass function, which assumes a cutoff frequency of 1 rad/sec and source and load impedances of 1 Ω. Either an input capacitor (top reference line in table) or an input inductor (bottom line in table) can be used. Convert values to other cutoff frequencies, impedances, and to highpass, bandpass or bandstop using the equations here. - Filter denormalization of formulas can be found here.
- Online filter calculators and plotters can be found here.
- Bessel filter complex poles can be found here.
Related Pages on RF Cafe- Filter Transfer Functions - Filter Equivalent Noise Bandwidth - Filter Prototype Denormalization - Filter Design Resources - Filter Design Books - Bessel Filter Poles - Bessel Filter Prototype Element Values - Butterworth Lowpass Filter Poles - Butterworth Filter Prototype Element Values - Chebyshev Lowpass Filter Poles - Chebyshev Filter Prototype Element Values - Monolithic Ceramic Block Combline Bandpass Filters Design - Coupled Microstrip Filters: Simple Methodologies for Improved Characteristics
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