Butterworth Filters
Refine signal, providing the flattest possible frequency in the passband, with a monotonic response.
See Also: Bessel Filters
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Product
Wide Band Filters (multi-octave)
ERF-5W™ Series (Single & Dual)
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The new ERF-5W™ filter takes Pole/Zero’s MINI-ERF® technology to a higher level of RF power handling, with 5W (average) in-band power handling, and covering the entire military tactical radio tuning range of 30-520 MHz in one integrated package. This tunability is accomplished by the use of three poles of selectivity, multiple internal tunable filters along with high performance PIN diode RF band select switches. The tunable filters are designed to minimize size and power consumption, while maintaining high RF power handling and linearity characteristics. Serial control is accomplished via a standard Serial Peripheral Interface (SPI)-based bus.
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Product
Filter Test System
DU7216/7218
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Delta United Instrument Co., Ltd.
Inductance, Q factor, Leakage Inductance, AC Resistance, Capacitance, DC Resistance, Balance,Turn ratio, Open/Short check
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Product
Filter Building Blocks
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Analog Devices offers an extensive line of continuous time and clock tunable (switched capacitor) filter building blocks. These devices were designed to simplify the implementation of band-pass, high-pass, low-pass, notch, or all-pass filters using classical filter realizations (such as Butterworth, Cauer, Bessel, and Chebyshev).
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Product
Narrow Band Filters (Single Octave)
IMF™ Series
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The Integrated Microwave Filter or IMF™ Series introduces accelerated tuning speeds packed in a very small, lightweight filter, providing maximum sensetivity and improved system performance for cleansing your ESM environment. Designed for the military radar market, specifically Active Electronically Steered Arrays (AESA) Radars and Phased Array Radars but compliment a broad range of applications such as; Commercial, Tactical & Military Communications, RF Front Ends (RFFE’s), SATCOM-on-the-move (SOTM), along with Electronic Warfare & Radar applications.
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Product
2-Port Optical Tunable Filter
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Optoplex's Tunable Optical Filter, also known as Optical Tunable Filter or Tunable Bandpass Filter, is an integrated module, consisting of micro optics and electronics. When receiving a stream of optical signals of a plurality of wavelengths from the Input-Port (IN), the 2-port tunable optical filter directs a selected channel to the Output-Port (OUT). The selected channel can be varied (tuned) within the operating wavelength (frequency) range by a remote command sent through the built-in control PCB and firmware.
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Product
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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Product
Automated Filter Tester
3140-1
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The model 3140 filter tester uses the same aerosol generation technology as the model 8130A respiratory filter tester. It works with Emery oil, DOP, DEHS, paraffin and other oils. Two new generation CPCs simultaneously count upstream and downstream particles. This enables accurate, repeatable and fast measurements, for example a HEPA filter can be tested in less than 15 seconds.
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Product
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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Product
MEMS Tunable Filter
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Optoplex’s MEMS Tunable Optical Filter is based on a patented micro-optic design with MEMS tuning technology. It is an integrated module consisting of a MEMS chip, micro-optics and control electronics and interface. When receiving a stream of optical signals of a plurality of wavelengths from the Input-Port (IN), the 2-port tunable optical filter directs a selected channel to the Output-Port (OUT). Wavelength (frequency) tuning is achieved by changing driving voltage applied to the MEMS chip, via the control electronics and the built-in firmware.
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Product
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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Product
Signal Conditioning and Filtering
MSXB 065
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The MSXB 065 Signal Conditioning Expansion Board provides filtered analog signal conditioning for voltage signals for Data Acquisition Processor systems. Each board has differential inputs; jumper-selectable simultaneous sampling; jumper-selectable gains of 1, 5, and 25; fourth-order anti-alias filters, cutoff frequencies from 100 Hz to 50 kHz.
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Product
EMI Filters & Adapters
Emissions
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The commonality in this section is conducted noise. Noise is not just a consideration when complying with EMC legal requirements, its is also potentially damaging and/or cause of failure of product performance or communications, even if the noise level is below EMC standards limits.
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Product
Gas Filter Correlation CO Analyzer
Model T300U
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Teledyne Advanced Pollution Instrumentation
The Model T300U Trace-level CO analyzer has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. Using IR absorption with a Gas Filter Correlation Wheel, the T300U is designed to allow ultra-sensitive CO measurements while still meeting the requirements for use as a US EPA compliance analyzer.The optical bench is enclosed in a temperature controlled oven, dramatically decreasing instrument noise and drift. The objective and field mirrors in the sample cell are gold plated to maximize signal to noise performance, while a temperature-controlled Nafion dryer on the inlet minimizes water interference caused by ambient humidity changes. Periodically, the T300U seamlessly corrects its baseline by routing the sample through a heated catalytic CO scrubber. This Auto Reference function corrects zero drift and reduces the effect of interferences.
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Product
2 to 8 Channel Anti-Alias Low-Pass Filter Card
AAF-1
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The AAF-1 is a multi-channel anti-alias low-pass filter board designed for front-end signal conditioning in PC-based or stand-alone 12-bit A/D conversion systems.
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Product
Preselectors and Switch Filter Banks
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Our preselectors and switch filter banks offer low noise figure, high dynamic range, state-of-the-art filter rejection with high channel-to-channel isolation front ends, realized in compact building blocks, designed in custom form factors. Applicable markets include: EW, missiles, radar, communications and space.
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Product
High-Current, Ultra-Low Noise Filter, 21 V / 500 MA, 10 Ω
N1298A
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The N1298A Series is a collection of low noise filters for the Keysight B2960 Series 6.5-digit low noise source.
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Product
Mid-Range Gas Filter Correlation CO2 Analyzer
Model N360M
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Teledyne Advanced Pollution Instrumentation
The Model N360M measures carbon dioxide (CO2) by comparing infrared energy absorbed by a sample to that absorbed by a reference according to the Beer-Lambert law.The N360M uses Gas Filter Correlation (GFC) to overcome the interfering effects of various other gases (such as water vapor) that also absorb IR. The analyzer passes the IR beam through a spinning wheel made up of two separate chambers: one containing a high concentration of CO2 known as the reference, and the other containing a neutral gas known as the measure. The concentration of CO2 in the sample chamber is computed by taking the ratio of the instantaneous measure and reference values and then compensating the ratio for sample temperature and pressure. A nitrogen purge system is provided for the GFC wheel assembly to eliminate the effects of ambient CO2, if necessary.
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Product
Band Pass Filter
PA72BPF
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The PA72BPF daughter board is an additional filter board. It typically contains two selectable differential 3rd order elliptic band pass filters. These filter modules are tailored by Applicos to the customers’ requirements. The filters can be used to filter the output signal of the generator daughter boards to achieve an even better distortion and noise suppression.
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Product
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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Product
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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Product
Ultra-Low Noise Filter, 42 V / 105 MA, 50 Ω
N1298B
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The N1298 Series is a collection of low noise filters for the Keysight B2960 Series 6.5-digit low noise source.
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Product
15 Amp 120 VAC Filter and Surge Arrestor
AS-AC15
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- 15 amp 120VAC quad outlet for high power devices- Resettable circuit breaker protection, easy to use and reset- I EA standard input plug and #14 GA AC line cord for USA - standard interface- MOV surge arrestors included - for even more protection- High level of common mode and differential mode filtering digital noise and RF filtering eliminates- digital artifacts and RF interference - See chart- Front Panel Neon Blue AC ON indicator - just plain cool to look at, not too bright!- Double shielded box inside - for optimum filtering operation- Size 6W X 4H X 4 3/4 D in inches approx 3 lbs
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Product
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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Product
Capacitor for AC Filtering
PECA4 (900V)
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Lifasa - International Capacitors, SA
These capacitors are especially suitable for applications where high levels of AC voltage are required. The design of this series has been optimized for the manufacture of high performance AC filters for compensation equipment with high pollution such as UPS or wind turbines
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Product
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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Product
Notch Filters
MINI-POLE Notch Series
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MINI-POLE® Notch Filters are optimized for small physical size and low power consumption. Two standard package styles are available (PC-Mount and SMA).
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Product
Filter Probe
350
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AINES 350 NFP is a professional noise filter probe to use in a demanding environment. It is designed to make a technician's job easy while tracing a wire from a bunch of wires with electrical interferences. The 350 NFP is the best option for technicians compared to other available products in the market. Combined with the AINES 140 or 240 Tone Sets, the 350 NFP makes a formidable combination to identify a cable pair quickly and conveniently in a normal environment and in locations with electrical interferences as well.
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Product
Fabry-Perot Based Scanning Filter
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This new type Fabry-Perot Based Scanning Filter (FPSF) is based on Optoplex proprietary fiber optical Fabry-Perot Etalon technology. It offers F-P based scanning filter with central wavelength at 1060nm, 1310nm, 1550nm or other customized wavelength. It can be tuned manually or automatically by scanning over a wide spectral range from 10nm to 100nm with bandwidth from 0.05nm to 1.0nm. FPSF features less than 3dB insertion loss and as high as 1kHz scanning frequency. Its unique high reliability and low insertion loss design presents the most cost-effective solution for OEM application from telecommunication to fiber sensing interrogation.
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Product
Dual 10th Order Lowpass Filter
64-VBF
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The 64-VBF 10th order Lowpass Filter is a dual channel filter with independent switch settable Cutoff Frequency (Fc). The filter has a linear phase DC accurate root raised cosine response. The unit’s differential inputs are built to withstand high DC over-voltages up to ±50 VDC and greater than ±100 V transients. Gain of the unit is 1 allowing for minimal insertion issues. The output can drive a high speed DAQ multiplexer with its fast settle and capacitive drive capability.
