Filters
Shape your signals and eliminate unwanted noise with our wide range of electronic filters, including low-pass, high-pass, band-pass, and notch filters. Low-pass filters attenuate frequencies above a specified cutoff frequency, allowing only low-frequency signals to pass through, ideal for smoothing out signals and removing high-frequency noise. High-pass filters do the opposite, passing high-frequency signals while attenuating low-frequency components, suitable for removing DC offsets or low-frequency interference. Band-pass filters selectively pass a range of frequencies while attenuating others, useful for extracting specific signals or rejecting interference from adjacent channels. Notch filters, also known as band-stop or band-reject filters, attenuate a narrow band of frequencies, suppressing unwanted signals while preserving the rest of the spectrum. With our diverse selection of filters, you can achieve precise signal conditioning and improve the performance of your electronic circuits.
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Products
Types of filters
Low Pass Filter (LPF): Allows signals below a certain cutoff frequency to pass through while attenuating higher frequencies.
High Pass Filter (HPF): Allows signals above a certain cutoff frequency to pass through while attenuating lower frequencies.
Band Pass Filter (BPF): Allows signals within a certain frequency band to pass through while attenuating frequencies outside of that band.
Band Stop Filter (BSF): Blocks signals within a certain frequency band while allowing frequencies outside of that band to pass through.
Notch Filter: A specialized band stop filter designed to attenuate a narrow range of frequencies, often used to remove specific interference or noise.
Butterworth Filter: A type of analog filter with a maximally flat frequency response in the passband and a gradual roll-off in the stopband.
Chebyshev Filter: A type of analog filter with a steeper roll-off in the stopband compared to a Butterworth filter, at the expense of ripple in the passband.
Elliptic Filter (Cauer Filter): A type of analog filter that achieves a steeper roll-off in the stopband than both Butterworth and Chebyshev filters, with ripple in both the passband and stopband.
Bessel Filter: A type of analog filter with a maximally flat group delay, which preserves the shape of input signals better than other types of filters.
Linear Phase Filter: A filter that introduces a constant delay to all frequencies in the passband, preserving the phase relationship between different frequency components of a signal.
Active Filter: A filter that includes active components such as operational amplifiers (op-amps) to achieve desired filtering characteristics.
Passive Filter: A filter that consists only of passive components such as resistors, capacitors, and inductors, without requiring external power sources.
Digital Filter: A filter implemented using digital signal processing techniques, typically realized in software or hardware with digital logic components.
FIR Filter (Finite Impulse Response): A digital filter whose output is a weighted sum of past input samples, with a finite duration impulse response.
IIR Filter (Infinite Impulse Response): A digital filter whose output is a weighted sum of past input samples and past output samples, allowing for feedback and recursive filtering.
Crossover Filter: A filter used in audio systems to separate different frequency bands and route them to specific speakers, such as woofers, tweeters, and midrange drivers.
Active Band Pass Filter: A band pass filter that includes active components to achieve desired frequency response characteristics.
Switched Capacitor Filter: A type of analog filter that uses switched capacitor networks to implement filter functions, commonly used in integrated circuit designs.
Sallen-Key Filter: A type of active filter topology commonly used to implement low-pass and high-pass filter functions.
Waveguide Filter: A type of filter used in RF and microwave systems, consisting of a hollow metallic waveguide structure that guides and filters electromagnetic waves based on their frequency.
Manufacturers
- Eaton Corporation
- Parker Hannifin Corporation
- Pall Corporation
- Donaldson Company, Inc.
- MANN+HUMMEL Group
- Freudenberg Filtration Technologies
- Mahle GmbH
- Sartorius AG
- Clarcor Inc. (Now part of Parker Hannifin)
- Filtration Group Corporation
- Pentair plc
- 3M Company
- Camfil Group
- Merck KGaA
- Gore
- Ahlstrom-Munksjö
- Lenntech BV
- Amiad Water Systems Ltd.
- Lydall Inc.
- Des-Case Corporation
Filters FAQs: Common Questions and Answers
We offer a variety of filters including EMI filters, RF filters, low-pass, high-pass, band-pass, and band-stop filters.
Selection depends on the required frequency range, insertion loss, and application specifics. Our product pages provide detailed specifications to help you choose the right filter.
Our filters are used in applications like communication systems, power supplies, signal processing, and EMI suppression.
Yes, our expert team is available to provide technical support and guidance for using our filters in your designs.
Yes, we provide custom filter solutions to meet specific project requirements. Contact our team to discuss your needs.