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Active Filters
Require power to operate, using active devices and passive components in a frequency-selective network, only passing certain frequencies.
- Valhalla Scientific Inc.
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Precision AC/DC Active Current Shunt
2575A
A versatile, powerful calibration tool, the 2575A Precision AC-DC Active Current Shunt measures both AC/DC current and works as a standard for low-level resistance calibration requirements.
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Active Filter
J2190A
The J2190A active filter presents a high impedance (approximately 150kOhms) minimizing the loading of the circuit being tested. The output impedance is 50 Ohms allowing low noise coaxial connections to all typical test equipment. The 0.1Hz-10Hz noise band is common for opamp measurements, voltage regulators and voltage references. Many application notes offer schematics of such a filter for test purposes. An engineer’s time is much too valuable to be spent building test equipment. We have created a 4th order high pass and 4th order low pass filter with an optimally flat response and 0dB gain. Additional filters can be cascaded for even sharper cutoff.
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oGx Modular Terminal Gear Frame System
openGear Series
oGx was built from the ground up for reliability. Decades of engineering and broadcast experience have been poured into every detail to ensure oGx is up to the demand task of 24/7 operation. The system includes integrated smart cooling with redundant cooling for the power supplies and an easy-to-clean air filter. The frame features a passive backplane, so that every active component in the system can be hot-swapped from the front. oGx also supports hot-swappable redundant power supplies for maximum protection.
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Spectrographs & Monochromators
Manual micrometer adjustable slits for precision control of incoming light. Motorized Slit and fixed slit is optional. More than 100 gratings for the best spectral range, throughput and dispersion to meet your applicationDSP controlled stepping motor scanning system provides superior precision and repeatability of wavelength positioningOptional internal shutter or six-position filter wheel for experiments requiring background removal or signal attenuationInstallation and set-up through USB 2.0 computer interfaces Stand-alone Omni Series monochromator control software for basic scanning and calibration. Also includes utilities for grating updates and communications Active X control support Visual Basic, C++ and Delphi drivers allow users to design their own acquisition programsZolixScan data acquisition software provides a simple user interface for easy data acquisition and experimental set-up
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Band Reject (Notch) Filter Components
precision band-pass and band reject (notch) active filters that provide high performance in a compact 32-pin DIP package, with a broad range of fixed center frequencies (fo) from 1 Hz to 100 kHz. Each filter type features a neartheoretical amplitude/phase response along with lowoutput voltage noise enabling these filters to achievea 10,000:1 or better dynamic signal range.
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Omni-λSeries Imaging Spectrograph
Omni-λi
Zolix Imaging Spectrometer includes different focal length 320mm, 500mm, 750mm; ◆Manual micrometer adjustable slits for precision control of incoming light. Motorized Slit and fixed slit is optional. • More than 100 gratings for the best spectral range, throughput and dispersion to meet your application◆DSP controlled stepping motor scanning system provides superior precision and repeatability of wavelength positioning◆Optional internal shutter or six-position filter wheel for experiments requiring background removal or signal attenuation◆Installation and set-up through USB 2.0 computer interfaces • Stand-alone Omni Series monochromator control software for basic scanning and calibration. Also includes utilities for grating updates and communications◆ Active X control support Visual Basic, C++ and Delphi drivers allow users to design their own acquisition programs◆ZolixScan data acquisition software provides a simple user interface for easy data acquisition and experimental set-up
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CAT-5 Video Variable Filters
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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Rubidium Oscillator
IQRB-2
The IQRB-2 low noise rubidium oscillator is a sub-miniature atomic oscillator combined with 'active noise filter' technology. This rubidium oscillator has 100 times less drift than OCXOs and with short term stability of 0.002ppb/s at 100s this rubidium oscillator provides significant improvements in performance over other rubidium components.
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General Purpose Basic Carrier Demodulator
CD15
The CD15 Sine Wave Carrier Demodulator operates with variable reluctance transducers to provide a DC output signal for dynamics as well as steady state measurements. A 5kHz sine wave excitation is applied to the two inductance ratio arms of the transducer and the resulting output is demodulated and amplified using the latest integrated circuit techniques. The DC output is obtained from an active filter circuit and gives a uniform response from steady state to 1000 Hz. The low impedance sine wave excitation allows operation with the transducer located over 1,000 feet from the CD15.
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Narrow Band Filters (Single Octave)
IMF™ Series
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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Media Files Player/Viewer/Analyzer/Converter
VQV
VQV is a compact, but powerful program, featuring: Raw YUV/Y4M/BMP files player with sophisticated viewer/analyzer functionality Wide range of frame sizes, input and output formats; powerful "Save as" file format converter Displays XY positions, YUV and RGB levels of every pixel; switchable zoom ratio and signal gain Automatic measurement of Active Image size and position – LetterBox and PillarBox detector YUV and RGB levels display, video frame information, Black Crash and White Crash statistical analysis Built-in high-gain spatial and temporal high-pass filters reveal even hardly visible artefacts Selectable RGB, Y, UV, R, G or B view channels, adjustable filter mask size and position Right-click submenu allows fast creation of snapshots or thumbnail .BMP images Running multiple VQV instances provides for quick frames/profiles comparison and benchmarking Easy-to-use tool, instantly revealing your video camera, codec, scaler, converter or other video device performance Input and output uncompressed video material data – bit by bit, pixel by pixel, frame by frame Fast and effective tool for 3G-SDI/HD-SDI/SDI/HDMI/LAN/WAN equipment testing and video data fidelity verification Ideal tool for development labs, software developers and high volume manufacturers
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IR Detectors
Opto Diode manufactures high performance infrared detectors with a wide variety of active area sizes, cooling alternatives, packaging, windows, lenses, and filters options. These detectors are ideal for gas analysis, emissions monitoring, spectroscopy, process control, flame and fire monitoring. Our A Series lead sulfide (PbS) detectors provide the highest sensitivity in the 1µm to 3µm wavelength region. Our B Series lead selenide (PbSe) detectors deliver the best overall performance in a wider spectral range from 1µm to 5µm. Our multichannel (MCDs) devices are ideal for simultaneous detection of multiple gases including CO2, CO, and other hydrocarbons.
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Wideband Active Filters
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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Microphone Pre-Amp Audio Interfaces
Analog Devices mic pre-amp audio interfaces provide a high fidelity, high performance solution for audio products. Specifications for this family include ultralow 1.5 dB noise figures, 140 dB gain range, and high gain capability. Operating in an extended industrial temperature range of –40°C to +85°C, this portfolio of mic pre-amp audio interfaces supports many applications, including precision instrumentation, active filters, low noise amplifier front ends, surveillance systems, computerized voice recognition, and a variety of other industrial and consumer products. As the first choice for serious audio engineers, Analog Devices mic pre-amp audio interfaces can give your applications the performance needed to meet the most demanding specifications.
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Precision Low-Loss Multiplexers
Maury’s line of diplexers (DP-series) and triplexers (TP-series) are designed for applications which require combining/ splitting signals at or around harmonic frequencies (nFo) and are connectorized for design-in and test and measurement applications.DP-series diplexers are designed using low-pass and high-pass filters and pass bias between the low-frequency (or Fo) port and the common (or DUT) port.TP-series triplexers are designed using low-pass, bandpass and high-pass filters and pass bias between the low-frequency (or Fo) port and the common (or DUT) port.Power handling is rated at 100W CW (average) and typical insertion loss is better than 0.5dB between the low-pass (Fo) and common ports.DP- and TP-series multiplexers are ideal accessories for passive, active and hybrid-active multi-harmonic load pull systems.
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Modular RF Systems
Becker Nachrichtentechnik GmbH
Flexible modular system for customer specific system solutions without the effort of development and construction. The range of module types covers from active multicouplers, programmable attenuators, delay lines, RF switches, switching matrices, BIAS-Ts, RF filters up to bi-directional splitters and combiners.
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Time-domain Field-Device-Circuit coupled simulator
EM-SUPREME®
Time-domain Field-Device-Circuit coupled simulator for modeling of passive structures, active components, and complete RF & millimeter-wave modules. EM-Supreme is used for EM modeling of power amplifiers, switches, filters, active antennas, and complete RF modules such as antenna-switch, switch-filter, switch-filter-amplifier, and front-end modules with no approximations.
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Parallel Active Multifunction Filter
SINAF 3.0
Lifasa - International Capacitors, SA
The active filters offer the best possible solution to solve the problems related to the quality in the electrical network, both in industrial three-phase installations, as commercial or service installations. These problems are caused, not only by the harmonics, but also by the consumption of reactive power (generally of capacitive type).
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Gas Filters
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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Notch Filters
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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Active Differential Probe
DF-600
The DF-600 Differential Active Probe is a high input impedance and low input capacitance probe. It also supports extremely high frequency bandwidth, and high voltage input. It is designed using three OP amps, namely two FET buffer OP amps and a low offset OP amp. Therefore, even with long-term operations, the measured voltage will not drift. The voltage offset always approach 0 volts. (USB power supply should be 5V ±2%). The following diagram shows the circuit of DF-600.
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Tunable Filters
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 or BCD.
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RF Filters
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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Active Components
MUD frequency doublers featuring Millitech technology are balanced resistive-mode multipliers covering full waveguide bands. Power flatness for a given input power level for these units is typically ± 2.0 dB across the band.
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YIG Filters
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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Waveguide Bandpass Filters
More details on PE-W28F001 WR-28 band pass wave guide filter can be found on the the waveguide bandpass filter design datasheet specifications up above. WR-28 waveguide bandpass filter from Pasternack is in stock now at our Irvine, CA facility. Our waveguide bandpass filter with WR-28 flanges is part of over 40,000 components for RF, microwave and millimeter wave applications in-stock which are available to ship same day worldwide.
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Notch Filters
Power-Pole Notch Series
POWER-POLE® Notch Filters offer improved performance and power handling over our MINI and MAXI Notch Filters.
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Dual Filter
Trig-TekTM 550D
Two channels with variable high pass and low pass filters in a module 7" high x 2.6" wide
