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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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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Bandpass Filters
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These bandpass filters utilize a suspended stripline design to obtain a very compact configuration. Applications include wideband receiver input preselection and output filtering of frequency multiplied RF power sources.
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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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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.
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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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Active Filters
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Power electronic devices used to enhance power quality by actively compensating for current/voltage harmonics, reactive power, and voltage imbalances.
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Tunable Filters - Digitally Controlled
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K&L Microwave offers a variety of Tunable Filter Products to satisfy a broad range of filtering applications. Tunable Bandpass and Bandreject filters provide the best solution for pre-tuning the desired signals while rejecting the interfering signals. The method of tuning can be either mechanical via a tuning knob mounted on the front of the filter, or electro-mechanical via an optional remote digital interface such as GPIB, RS-232, RS-422, BCD, ARC171, ARC234, Ethernet, USB or "Thumbwheel" panel mount.
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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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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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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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Notch Filters
Power-Pole Notch Series
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POWER-POLE® Notch Filters offer improved performance and power handling over our MINI and MAXI Notch Filters.
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Narrow Band Filters (Single Octave)
MINI-SMT® Series
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The new MINI-SMT™ tunable filter advances our popular MINI-POLE® Series by providing Surface Mount (SMT) capability along with the field proven RF power handling, low distortion and exceptional selectivity performance of our MINI-POLE® filters. MINI-SMT™ bandpass options are available from 700 MHz to 3 GHz.
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RF Filters
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RF Filters block unwanted frequencies when testing electronic devices for emissions during EMC testing. They attenuate unwanted frequencies and allow the desired signals through. The RF filters isolate the device under test from external RF noise, this increases the reliability and accuracy of the EMC testing by preventing out-of-band noise and harmonics.
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Band Pass Filters
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*High power handling 200W with a wide range of bands available*Excellent Isolation with Low Intermodulation*High reliability of >500K Hours MTBF and multi-strike lightning protection*Support for 7-16 or 4.3-10 connectors and optional 19 inch rack mount kit*Designed and produced to ISO 9001:2008 certification standards for reliability and quality
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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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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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CAT-5 Video Variable Filters
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It is often beneficial to use a video driver at the output of a video encoder for power savings, line driving, and additional circuit protection. The video driver is typically configured as an active filter, also known as a reconstruction or anti-imaging filter. The purpose of the reconstruction filter is twofold: it blocks the higher frequency components (above the Nyquist frequency) that were introduced into the video signal as part of the digitization process and provides gain to drive the external 75 Ω cable to the video display.
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Automatic Battery with Filters with Standard Contactors
BATLVF400
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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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Bandpass Filters
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ISM and RFID bandpass filter PE8700 from Pasternack is part of our extensive in-stock RF components for sale. Our ISM and RFID band pass filter is manufactured with SMA connectors that are female and in a 4 section design. This 4 section SMA bandpass filter for ISM and RFID has an insertion loss of 1.500 dB and a maximum power of 5 Watts.
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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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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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Low Pass and Bandpass SMA Coaxial Filters
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Fairview Microwave’s bandpass filters were developed for use in various applications including GPS, ISM, RFID and Wi-Fi systems and operate in several bands, some as low as 824 MHz and some as high as 5.875 GHz. Fairview’s low pass filters allow for tailoring of a test setup for a specific application and support upper band edges of 100, 225, 400, 1000, 2000 and 3000 MHz. All of these bandpass filters and low pass filters feature female SMA connectors.
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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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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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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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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.
