Bessel Filters

Analog and DSP (FIR) electronic signal filter modules and instruments from 0.02 Hz to 2.0 MHz. Precision low-pass, high-pass, band-pass, band-reject (Notch) offering low noise and distortion to <-120 dB. ...more

Low-pass analog and digital FIR electronic signal filter modules and instruments from 0.2 Hz to 2.0 MHz. Butterworth, Bessel, Chebychev, elliptic and constant-delay transfer functions are available ...more

8-Channel Lowpass Bessel Filter Module ...more

The V285 is a single-width, C-size, register-based, VXIbus module that is a 16-bit, precision, arbitrary waveform generator. It includes a DAC per channel and is capable of update rates to 500 kHz per channel. Each analog channel includes a 4-pole, Bessel filter with programmable cutoff frequencies of 10 kHz and 100 kHz. A 16-bit ADC/multiplex ...more

Our Model 5933 Flat Group Delay Low-Pass Filter is designed for OEM use in high-speed digital networks and telecommunication systems. This device uses a proprietary, absorptive filter design that has attenuation and time domain characteristics similar to those of the 4th order Bessel-Thomson filter ...more

This filter uses a proprietary, absorptive filter design that has attenuation and group delay frequency responses similar to those of the 4th order Bessel-Thomson filter. ...more

The Krohn-Hite Model 3940 programmable, dual channel, Butterworth/Bessel filter offers a programmable or benchtop filter covering a cutoff frequency range from 3Hz to 2MHz. ...more

The Models 3905C and 3916C are Programmable Multi-channel Filter Systems which can be configured with many types of filter cards; Elliptical filters for anti-aliasing, Butterworth filters for clean filtering in the frequency domain, and Bessel filters which provide superior or pulse or complex signal filtering. ...more

The NEW 3A, 3B, 3C and 3D Series of continuous-time fixed-frequency precision active filter modules from Krohn-Hite provide filtering in a 1 to 8-poles and 16-pole compact package, with the choice of cutoff frequencies selectable within the frequency range from 1Hz to 2MHz low-pass and 1Hz to 600kHz high-pass. Choose between Butterworth or Bes ...more

The Models 3905C and 3916C are Programmable Multi-channel Filter Systems which can be configured with many types of filter cards; Elliptical filters for anti-aliasing, Butterworth filters for clean filtering in the frequency domain, and Bessel filters which provide superior or pulse or complex signal filtering. ...more

The Krohn-Hite Model 3945 programmable filter provides one Butterworth channel of low-pass, tunable over the range from 170Hz to 25.6MHz; and two independent Butterworth or Bessel channels of low-pass, high-pass or bypass, one channel of band-pass or band-reject, tunable over the range from 3Hz to 2MHz. ...more

The Krohn-Hite Model 3360 Filter Series are one, two or four channel filters providing ease of operation and the reliability Krohn-Hite has been known for since 1949; along with a price that will fit any budget. The 3360 Series provides a tunable frequency range from 0.1Hz to 200kHz, and with the 002 option, the range is extended to 0.005Hz. T ...more

The Krohn-Hite Model 3944 is a 4-channel, Butterworth/Bessel filter offers a programmable or bench top filter covering a cutoff frequency range from 3Hz to 2MHz, with a frequency response characteristic of maximally flat (Butterworth) for clean filtering in the frequency domain, or linear phase (Bessel) to provide superior pulse or complex sig ...more

The SIM965 Analog Filter is ideal for signal conditioning applications where Bessel or Butterworth filters are needed. Bessel filters offer clean step response (negligible overshoot) and linear phase response, while Butterworth filters provide excellent pass-band flatness with some overshoot ...more