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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Filters
ZF
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Antenna Technology Communications, Inc.
ATCi offers a selection of filters designed to reject out-of-band interference.
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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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RF Filters
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Amphenol Procom has 40 years of experience in developing and producing high quality RF Low- and high-power Filters for professional radio systems, widely used in the Public Safety and Mission Critical radio TETRA networks in Europe. The comprehensive portfolio of Filter products from Amphenol Procom are designed by experienced engineers, and highly used in the HF-, VHF- and UHF radio frequency range.
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SAW Filters & SAW Oscillators
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Rich heritage in small form factor, high-rel SAW filters and oscillators for today's military and space markets.
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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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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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Notch Filters
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K&L Microwave provides notch filters, also called bandstop or bandreject 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. When considering a particular family of parts, use Filter Wizard (a link button will be provided when appropriate) to determine a specific part number within the given family.
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Narrow Band Filters (Single Octave)
MINI-POLE® Series
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The MINI-POLE® Series of tunable filters is optimized for size, RF power handling, low distortion, and exceptional selectivity. The product line includes several standard designs in various bands to support a myriad of applications. Approximate performance is summarized in the MINI-POLE Series Selection Guide.
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Real Time Digital Filters
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Real Time Digital Filters can be used to filter a measured signal in real time. Filter characteristics can be defined by the user to meet the requirements of a specific application. Real-time digital filters are applied in the data conditioning phase. The filters are designed with a graphic design tool and then uploaded to the front-end for real-time calculation. The graphic design tool defines the filter performance vertical axis with a dB scale. The horizontal axis is defined as relative frequency.
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Band Pass Filters
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High-Pass (HPF series), Low Pass (LPF series) and Band Pass (BPF series) Filters are available, providing desired skirt selectivity and rejection levels with minimum insertion loss in the pass band. The filters are offered in all standard waveguide bands covering 18 to 400 GHz depending on our possibility to fulfil the customers' requirements. Dimensions of filters depends on required specifications. .
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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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Wide Band Filters (multi-octave)
HF-ERF™ Series
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The HF-ERF™ is an internally switched 3‑band, low cost, miniature, high performance tunable filter. The HF-ERF™ was designed to have the best insertion loss and Q in the smallest package possible, 2.0” x 2.78” x 0.6”. All HF-ERF™ filters are fully tested and aligned by Pole/Zero for convenience and ease of use. Both SPI and Parallel control interfaces are available in one filter. Modified variants are available upon request.
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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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Automatic Batteries with Filters with Thyristors
BATLVFS800
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Lifasa - International Capacitors, SA
LIFASA automatic capacitor banks are used for centralized compensation of powerfactor in low voltage instalations.
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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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Lowpass Filters
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K&L Microwave provides lowpass 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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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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Optical Filters
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Alnair Laboratories Corporation
The filter exhibits an ultra-sharp roll-off of 1500dB/nm(12dB/GHz), without compromising the flexibility ofbandwidth- and wavelength-tuning. Ideal for DWDMchannel selection and removing ASE noise.
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Broadcast Filters VHF TV
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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.
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Automatic Battery with Filters with Standard Contactors
BATLVF1000
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Lifasa - International Capacitors, SA
LIFASA automatic capacitor banks are used for centralizedcompensation of power factor in low voltage instalations.
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Bandwidth-Tunable Filters
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Through cascading a low-pass tunable edge filter with a long-pass tunable edge filter, one can achieve a new type of bandwidth-tunable filter whose passband width is variable while its center wavelength is still tunable. With such a device, you can
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RF Filters - Notch
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A specialized band-reject filter that blocks or significantly weakens a very narrow range of unwanted frequencies (the "notch") while letting all other desired frequencies pass through relatively unchanged.
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EMI/EMC Filters And EMI Solutions
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Chengdu Mengsheng Electronics Co., Ltd.
DOREXS is a company specializing in the manufacture of EMI/EMC filters. For more than a decade, it has been committed to providing cost-effective EMI/EMC filters and EMI solutions for commercial, medical, military and industrial applications. We help your equipment gain recognition for its stable and reliable functions.
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Tunable Optical Filters
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DiCon's MEMS tunable optical filter offers many advantages over a traditional tunable optical filter; increased accuracy & resolution, a faster tuning speed, as well as a durability that will last for over a billion tuning cycles, all in a compact package. Options are available for either 100 GHz or 50 GHz channel spacing as well as operation in either the O-band, C-band or L-band wavelength ranges.
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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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Ground EMI Filters
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High-frequency signals on ground is never good news - it interferes with normal operation of equipment and creates electrical overstress (EOS). However it is easy to block propagation of EMI on ground by installing highly-effective ground EMI filtes in ground lines. Our unique patent-pending ground EMI filters provide very low impedance for DC and mains' power while effectively blocking propagation of high-frequency currents throughout facility or equipment ground. Ground filters meet safety standards, as well as ANSI/ESD S6.1 and ANSI/ESD S20.20.
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Noise Suppression Products / EMI Suppression Filters / TVS Diodes (ESD Protection Devices)
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Murata noise suppression products include compact EMI suppression filters that efficiently eliminate noise, L Cancel Transformers (LCTs) that greatly suppress noise in high-frequency bands by reducing the ESL generated inside capacitors and in boards, and TVS Diodes that guard semiconductor devices against electrostatic discharge from external sources. Murata supplies products that support a variety of approaches to suppressing noise.
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Filters
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High performance and high quality. Mercury Systems' filter products utilize the latest in filter technology and are supported by the Mercury commitment to quality and innovation. With experience manufacturing space-quality hardware, Mercury has developed the capability for reliability to be built-in from the first design phase. With state-of-the art modeling software and an on-site machine shop, Mercury Systems is ready deliver a standard product or custom design.
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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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LCL Filters
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LCL Type Harmonic Filter Modules are used to filter out the input current harmonics of the Motor Drives having six-pulse diode/thyristor rectifiers, where harmonic current distortion exceeds the limits defined in standards.
