Filters
Electronic circuits which refine signal by blocking certain frequencies, while allowing other frequencies to pass.
See Also: Filter / Amplifiers, EMI Filters, Low Pass Filters, Programmable Filters, Attenuators
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Sine Filters
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Sine Wave Output Filter Modules provide satisfactorily smoothed sinusoidal waveform with low residual ripple form square waveform with high voltage spikes, present at the output of motor drives.
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Active Filters
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Analog Devices’ specially designed active filter products can accommodate any frequency response (low-pass, high-pass, or band-pass) and a wide range of frequencies. Our line of continuous time and switched capacitor filters provides simple, flexible frequency discrimination solutions.
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Gas Filters
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WITT gas filters enable the finest filtering of impurities in technical gases such as acetylene, argon., oxygen, hydrogen, methane, carbon dioxide, helium, compressed air and ethylene. They thus protect downstream equipment and systems. Some gas filters are also referred to as gas cleaners.
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Individual Optical Filters
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Our comprehensive line of Semrock optical filters helps your design attain the best signal-to-noise ratios. Steep spectral edges maximize useable bandwidth, and high transmission or reflection captures the brightest images with best-in-class Flatness. Deep and extended blocking are optimized for your application, minimizing background and crosstalk while reducing cost. Select from the extensive catalog or go with a custom filter to your exact specifications, and remain confident of uncompromising quality, reliability, and reproducible results.
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Highpass Filters
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K&L Microwave provides highpass filters in multiple topologies built to customers' electrical, mechanical, and environmental specifications. The list below contains part numbers meeting existing industry and customer specifications, as well as product families. Use the quote cart to request a quote on a specific design.
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Wide Band Filters (multi-octave)
NANO-ERF® Series
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The NANO-POLE® Extended Range Series of tunable filters was developed to address applications needing an extremely small surface-mount package with low power consumption. Wide tuning range is accomplished with careful design to minimize size and power consumption.
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Tunable Filters
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Our Tunable Filters can be used in a wide range of applications from R & D to production. We have both Gaussian, using dielectric multilayer coatings, and Flat-Top, using gratings, filter profiles available.
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"Standard" RF Low Pass Filters
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Coaxial Dynamics "Standard" line of RF Low Pass Filters offers several models to choose from at CW power ratings of 100 watts and 200 watts. These filters cover operating frequencies from 88 MHz to 400 MHz with less than 0.5 dB insertion loss and attenuation levels of 40, 50 and 60 dB.
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Anechoic Chamber Filters
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RF leakage through Ethernet and USB cables can destroy even the best RF enclosures and chambers. The need for filtering in the ever congested RF environment requires special filters that can pass USB 2.0 and 10/100/1000 Mbps Ethernet signals and filter out unwanted higher frequencies such as cellular and WiFi. The Adaura Technologies USB/Gigabit Filters provide one GigE and one USB 2.0 pass-through connections while filtering out other RF up to 8GHz. It has a small form factor to allow easy installation. It is a most cost effective solution for a clean chamber set up. In a typical chamber, WiFi signals are reduced to <-100dBm with this filter installed.
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Wide Band Filters (multi-octave)
MINI-ERF® Series
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The MINI-POLE® Extended Range Series of tunable filters was developed to address applications needing a small, surface mount package with wide tunability. This tunability is accomplished by the use of multiple internal tunable filters along with high performance PIN diode RF band select switches all contained in one housing. The tunable filters are designed to minimize size and power consumption while maintaining high RF power handling and linearity characteristics. Parallel or serial digital interface can be selected by a mode pin for ease of integration into your design.
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Narrow Band Filters (Single Octave)
NANO-POLE® Series
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The NANO-POLE® is designed for optimal size, DC consumption, RF power handling, insertion loss, signal purity and linearity. The NANO-POLE® provides a minimum center frequency step size of 10 MHz typically but can be modified based upon request. The NANO-POLE® requires a +3.0 V supply that typically draws 5 mA when not hopping. The supply voltage should be adequately filtered as noise present on this pin will influence the RF signal purity. The NANO-POLE® uses SPI control interface.
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AC Power Line EMI Filters
CleanSweep®
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CleanSweep® filters block EMI on power lines (both common and differential modes) and, uniquely, in ground, from reaching sensitive equipment. They also reduce EMI "backflow" from a "noisy" source that otherwise would end up on your AC power network.
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Notch Filters
Maxi-Pole Notch Series
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MAXI-POLE® Notch Filters offer all of the same performance features as the MINI-POLE® Notch filters, with the advantage of an improved notch shape factor.
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Automatic Batteries with Filters with Thyristors
BATLVFS1000
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Lifasa - International Capacitors, SA
LIFASA automatic capacitor banks are used for centralized compensation of power factor in low voltage instalations.
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Low-Pass Filters
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Low-Pass Filters from Analog Devices are specifically designed to reject higher frequency noise and unwanted signals while allowing desired signals to pass through. Analog Devices offers an extensive line of continuous time and clock tunable (switched capacitor) devices preconfigured for low-pass filtering. These integrated low pass filters feature a wide range of cutoff frequencies and response characteristics.
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Baseband Programmable VGA-Filters
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Analog Devices’ RF VGAs, IF VGAs, and variable gain control products offer the high performance needed for communications, instrumentation, and military designs. The portfolio includes continuous analog linear in dB products based on X-AMP® interpolation architectures and digital step controlled products providing as fine as 0.25 dB step and linear in volts digital control. Furthermore, ADI RF VGAs are highly integrated with digitally controlled multipole analog filters integrated on-chip as well as AGC circuits for automatic level control.
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Rack Module with Standard Contactors with Anti-Harmonic Filters
MODF Rack
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Lifasa - International Capacitors, SA
The MODF-RACK control units include, in a compact form, all the components necessary for the operation of a step of a capacitor bank with filters. MODF-RACK modules are divided into two basic blocks: power block and control block. The two blocks are mounted in a small frame to be installed in an electrical panel.
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RF Filters
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Raymond RF offers a complete line of RF filters ranging from 0.4A to 600A in both stand-alone and cabinet-mounted configurations for our QuietBoxes and Anechoic Chambers. Both styles of filters can be supplied with NPT pipe nipples and flange nuts for mounting directly on a QuietBox or Anechoic Chamber. Alternately, both styles of filters can be remotely mounted with shielded conduit running between the clean end of the filter and the QuietBox or Anechoic Chamber.
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Filters and Multiplexers
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CAES offers an extensive line of RF filters and multiplexers designed and manufactured using our internal capabilities in machining and component and substrate fabrication.These heritage processes have proven flight pedigree in space, on board Gen 5 aircraft and shipboard platforms. CAES' proprietary plating processes enables industry leading high-Q, low l
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Tunable Edge Filters
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Tunable edge filter is a customized product. It usually belongs to 2-port optical tunable filter product platform. Instead of using narrow bandpass filter in the 2-port tunable optical filter, the tunable edge filter utilizes a low-pass or long-pass interference filter. By changing the incident angle of the light beam, the cut-off wavelength will be tuned. Standard Tunable edge filters support C-band or L-band wavelength range.
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Fiber Bragg Grating And Optical Filters
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Exail is committed to develop and manufacture optical components with excellent performances to support the most diverse industrial applications such as Telecom, sensing, defense, space, fiber laser and harsh environment.
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EMC & EMI Filters
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CTS is the leader in EMI/RFI filters and offers a diverse product line of standard as well as custom filters to suppress electromagnetic interference (EMI) / radio frequency interference (RFI), thereby providing customers with a wide range of electro-magnetic compatibility (EMC) solutions. Discover cutting-edge solutions for your electromagnetic compatibility needs with CTS EMC products. Our innovative range is engineered to deliver unparalleled performance, ensuring seamless connectivity and optimal functionality across diverse industries.
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YIG Filters
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With a 30 year heritage developing leading YIG technologies, Teledyne RF & Microwave has unsurpassed capabilities as your single source for YIG filters. Teledyne has a large, self-contained YIG manufacturing and R&D infrastructure that ensures continuous YIG innovations, including the industry’s only YIG filter that “locks” to a desired signal.
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Telephone Attenuators & RFI Filters
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Despite the growth in digital and fiber systems, many telephone companies still require basic line treatment products. Wilcom's hard-to-find line treatment products help the telecommunications industry deliver the performance the customer expects. Products include line powered amplifiers and RFI filters.
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Highpass Filters
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Frequency range of this band pass filter is 1,000 MHz to 2.5 GHz and the passband is 1.5 GHz. PE8715 highpass filter is one of over 40,000 RF microwave and millimeter wave components supplied by Pasternack. Our 5 section highpass filter can be bought and shipped worldwide the same-day as with our other in-stock RF parts.
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RF & Microwave Filters
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High performance filter solutions for defense, wireless telecom and space applications with an expertise in the integration of multiple and mixed topologies in a single unit that optimize system performance.
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Broadcast Filters FM
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RFS bandpass filters are primarily used as part of multi-channel combiner facilities but can also be used to eliminate spurious emissions and increase isolation between co-sited services.





























