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:
Excellent absorption of high-frequency noiseMinimises noise without affecting
signal qualityCan be installed with one touch, without having to cut cablesSeries offers models for a range of cable outer diametersSuitable applications include PCs, monitors, HDDs, digital telephones and audio equipment.
Description:
Ceramic dielectric RFI suppression filters that combine two
reactive filtering elements, a miniature discoidal capacitor and ferrite inductorThe filters are encapsulated in a brass case and are intended for chassis mounting applications where space is at a premiumIdeally suited to ...
Description:
NFA 18SL series 0603 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:
Highly integrated common mode filters from STMicroelectronics designed
to suppress EMI and RFI common mode noise on high-speed differential serial buses such as MIPI D-PHY, MDDI or USB 2.0. Some of the devices include a high power TVS to protect ...
