A Signal Filter is a passive component, which allows specific frequency bands to pass and reject other electrical signals, mainly for noise reduction. The design integrates multilayer ceramic capacitors, inductors, dielectric resonators and crystals. The Filter finds use in circuits of audio, video, broadband and communication equipment. Electronic signal processing filter is described to be linear or non-linear, analogue or digital, shift invariance, passive or active circuit.
The filter frequency response can be classified as:
high-pass
low-pass
band-pass
band-stop
notch
all-pass filter
cut-off frequency.
The order of a filter refers to the slope of the transition to roll-off around the cut-off frequency. A first-order filter responds at -6 dB per octave, a second-order filter decreases at -12 dB, a third-order at -18 dB, on a logarithmic scale. The analogue filter in a linear design of a network synthesis type is known as the Butterworth filter, Chebyshev filter, Elliptic filter, Bessel filter and Gaussian filter.
Description:
NFA 21SL series 0805 SMT chip EMI Suppression
Filters for Applications using Murata Ceramic processing technology and filter design technology. These filters prevent ringing caused by circuit impedance, the arrays stable noise attenuation over wide frequency range and are small ...
Description:
NFA31C series SMT chip EMI suppression filter for
applications using Murata's ceramic processing technology and filter design technology. This series is well suited for EMI suppression in digital I/O lines of varied electronic equipment such as notebook size PCs. High ...
Description:
BNX024H/025H/026H/027H Series SMD block type EMIFIL for automotive
and FA/ OA devices, providing excellent noise suppression on DC switching lines. Large rated current and a wide frequency range from 40kHz to 1GHz: 35dB min, (BNX027)Wide operating temperature range of -55°C ...
Description:
EMIFIL NFL21S series high performance EMI suppression filter
chip (2.0x1.25mm size) for high speed signal lines by using Murata's processing technology. Suppresses noise with little attenuation of the signal itself due to its steep filtering characteristicsMurata's original internal structure design ...
