EMI Filters
mitigate high-frequency noise. Also known as: RFI Filters
See Also: Filters, Filter / Amplifiers, Low Pass Filters, Programmable Filters
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Product
Rugged Power Supplies For Harsh Environments
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NAI designs and manufactures a full line of Commercial Off-the-Shelf (COTS), Modified COTS and Custom Power Supplies - including configurations that meet VME, cPCI and VPX (VITA 62) requirements. All comply with environmental standards designed for harsh environments, including MIL-STD-810G, VITA 47 and MIL-STD-901. NAI’s rugged power supplies also have integrated EMI filters per MIL-STD-461 standards.
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Product
Filters
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In order to minimize filter roll-off, we start with a quality, highly polished substrate and apply layers of metallization within tight tolerances. Our highly anisotropic ion beam etching process enables us to produce features down to 10 microns. Furthermore, the milling process yields a high consistency from circuit to circuit meaning that whether we produce 1 or 100,000 filters, each one will have consistent filter roll-off characteristics.
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Product
EMI Test Receiver
ESR
Receiver
The R&S®ESR is an EMI test receiver build to measure electromagnetic disturbances using conventional stepped scans or ultrafast FFT based time domain scans. It also functions as a powerful signal and spectrum analyzer. The receiver features real-time spectrum analysis with a wide range of diagnostic tools for detailed analysis of disturbance signals and their history.
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Product
DC Filters
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This DC filter provides substantial noise reduction on DC power lines of up to 50V 9A. Filter provides noise suppression in both directions protecting your DC lines from noise generating by a particular piece of equipment or protecting your sensitive equipment from noise coming from DC power supply or other loads. DC filter provides noise suppression for both power lines – positive and negative, plus common-mode noise vs. ground. Filter uses plug-in terminal block for connections and mounting flanges for easy installation. Its rugged construction makes it easy to fit in many industrial tools.
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Product
EMI Test System
EMI-9KA
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EMI-9KA is an automatic EMI receiver. It is a main test system for EMI (Electro Magnetic Interference) testing. The EMI-9KA is produced by the full closure structure and strong electro-conductibility material, which has high shielding effect. Due to the new technology for the EMI Test System, it solved the instrument self-EMI problem. The test results are according to the international format test report. The EMI Test System EMI-9KA fully meets CISPRl6-1, GB17743, FCC, EN55015 and EN55022.
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Product
EMI Test Receivers
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EMI test receivers; extremely accurate instruments designed to detect electromagnetic emissions rigorously, to ensure all emissions conform to the Standard being tested to. Configured to set up running the required tests for parameters defined by the Standards as simply as possible, including automated test routines. R&S EMI test receivers can be much more too, with a full signal and spectrum analyzer in the same instrument.
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Product
Filters & Switch Filter Banks
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PMI offers the highest quality filters, switch filter banks, filter assemblies, diplexers, multiplexers for industrial and military applications in the frequency range of DC to 40 GHz. All PMI’s Switch Filter Banks use PMI’s proprietary Solid-state Switch designs, which offer high speed and improved performance. While there are many standard models, PMI can design and build to meet your specifications.
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Product
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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Product
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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Product
RF Filters
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Smiths Interconnect is committed to providing technically advanced, high quality “state-of-the-art” RF Filters, Multiplexers, Switched Filter Banks, and Integrated assemblies, from 100 KHz to 65 GHz. All products are subject to the same rigorous design, manufacturing, and inspection criteria. Regardless of the application, our internal process and procedures help ensure that all products are fully compliant to all specifications. Our R & D activities are constantly evaluating new materials, plating techniques, and manufacturing processes to offer the highest performing components available today.
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Product
EMI Test Receiver
ESL
Receiver
The R&S®ESL EMI test receiver combines two instruments in one, measuring EMC disturbances in accordance with the relevant standards and also serving as a full-featured spectrum analyzer for diverse lab applications. The combination of very good RF characteristics and all of the important functions needed for fast, precise measurement and evaluation of the EMC of a device under test in accordance with commercial standards is unmatched in this instrument class.
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Product
EMC- EMI test Equipments
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Our AFJ FFT 3100 & 3300 EMI Receivers cover the full frequency range from 9kHz to 3GHz.To allow a greater flexibility GTemCell can provide either a single or multiple solution of receivers to cover the most common standards and regulations such as CISPR, EN, IEC, FCC etc.
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Product
Wireless Filters
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K&L Microwave offers a variety of wireless filters for the communications marketplace, built to customers' electrical, mechanical, and environmental specifications. The list below contains part numbers meeting existing industry and customer specifications. Use the quote cart to request a quote on an existing design or to provide specifications for a custom design.
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Product
EMI Receiver
Core-6
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The "CORE-6" is a very compact (19", 1 RU), new digital EMI receiver which enables the user to make frequency-sweeps within a few seconds what saves hours of measuring timeduring developments.
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Product
Capacitor for DC Filtering
FIL1
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Lifasa - International Capacitors, SA
FIL condensers are specially designed for use in direct current sources and their functions are to filter the alternating output ripple and protect the line from instantaneous peaks and surges of tension.
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Product
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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Product
High-Pass Filters
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is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency.
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Product
Semrock Optical Filters
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IDEX Health & Science offers a comprehensive line of Semrock optical filters. We set the standard in performance, quality, and reliability for the life science, point-of-care, clinical diagnostic, and analytical instrumentation industries. We have applied patented design techniques to create some of the most spectrally sophisticated optical filters on the market. Whether you select from our extensive catalog or we design a custom filter to your exact specifications, you can be confident of our uncompromising quality, reliability, and reproducible results.
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Product
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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Product
Broadcast Filters UHF
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RFS Waveguide UHF filters are now 4th generation products designed for global combining and filtering applications associated with DTV and analog television transmissions.
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Product
Low-Pass Filters
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Is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design.
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Product
Switched Filter Banks
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K&L Microwave provides Switched Filter Bank (SFB) products built to customers' electrical, mechanical, and environmental specifications. The list below contains part numbers meeting existing industry and customer specifications. Use the quote cart to request a quote on an existing design or to provide specifications for a custom design.
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Product
Harmonic Filters
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ENTES Harmonic Filter Reactors are used in serial connection with capacitor banks in power factor correction units. By using these types of detuned reactors it is possible to increase the capacitor impedance against harmonic currents and to keep the resonance frequency under the frequencies in which main harmonic currents occur by shifting the resonance frequency.
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Product
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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Product
Tunable Filter Spectrometers
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MKS Instruments' platform of innovative optical analyzers based on Tunable Filter Spectroscopy (TFS™) provides real-time gas analysis, while delivering customers a substantially lower total cost of ownership. TFS™ can be utilized from UV (Ultra-Violet) through IR (Infra-Red) spectral regions. MKS TFS™ sensor platforms have been on the market since 2008 with more than 2500 systems deployed.
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Product
EMC Filter Synthesis Tool
EFsyn
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EMC Filter Synthesis is a software tool for simulation and design of EMC filters. The new approach of this filter synthesis tool is based on simulating with the real values of the EMC filter components. Due to this, the EMC simulation considers the parasitics of the components.
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Product
Optical Filters
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INPHORA offers calculation, development and production of unique Optical Filters designed to match exactly to the requested parameters or to fit to the given application.
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Product
Wideband Active Filters
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Analog Devices’ family of fixed and tunable wideband active filters operating up to 28 MHz bandwidth support a wide range of wireless communications, signal conditioning, and RFID applications. Single-channel and dual-channel options are available.





























