- Frequency Devices Inc.
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Low-Pass Filters
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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Tunable Notch Filters
The Ranatec Tunable Notch Filters are critical tools for adaptation to stringent new ETSI/3GPP conformance test specifications for mobile device radio properties, that covers all sub-6 mobile bands and channel bandwidths for 2G/3G/4G/5G. Designed for formal conformance testing performed by accredited test houses, as well internal verification by mobile device vendors. A flexible and easy to use test automation platform to support almost any ambition level, tailored to your demands.
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Narrow Band Filters (Single Octave)
MINI-POLE® Series
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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Narrow Band Filters (Single Octave)
MINI-SMT® Series
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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High Frequency Tunable Bandpass Filters
CTB Series
Tunable Ranges Up To 8 GHz. Bandwidths 1% to 5% of Tuned Center Frequency. Digital Control Offered in Various Inputs, including GPIB (standard), RS-232, RS-422, and USB. Custom Interfaces Available.
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Wide Band Filters (multi-octave)
HF-ERF™ Series
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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Filter Building Blocks
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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Mini MEMS Tunable Filter With VOA
The Optoplex mini tunable filter described is specifically designed for 100G tunable transceiver analog coherent optics (CFP2-ACO) application. The main purpose of this tunable filter is to suppress the noise to improve the sensitivity and OSNR performance.
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Module (Venue 2)
VRT2
Up to six VRT2 modules may be installed per each 1RU Venue 2 receiver frame. Each module supports up to 3072 tunable frequencies across a 75 MHz range (three standard Lectrosonics blocks), matching the tuning ranges of SSM, LT and LMb "large bandwidth" transmitters. VRT2 modules incorporate Lectrosonics’ new IQ dynamic tracking filters, which accommodate a wide range of transmitter RF power levels while also enabling extremely tight channel spacing—critical features as the available RF spectrum continues to shrink.
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Bandwidth-Tunable Filters
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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Tunable Non-Reflective Band-Reject Filter (700MHz-1GHz)
SPCL-00597
This device is placed after the DUT to protect the Spectrum Analyzer from high-power fundamentals and provide harmonic measurements. The non-reflective functionality prevents energy from bouncing back to the DUT and raising the noise floor level.Broadband matching improves dynamic range and reducesmeasurement uncertainty.
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Precisive® 5 Application Specific Gas Analyzers
The Precisive® Gas Analyzer is a real-time gas analyzer based on MKS' unique Tunable Filter Spectroscopy (TFS™) platform. The Precisive suite of products are calibrated for the measurement of a wide range of gases across multiple process industries. The real-time, continuous measurement capability provides immediate analysis ensuring control of critical process parameters.
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Mini Receiver
FB7-NX
In about 1935, the National Radio Company of Malden, Mass., brought out a “hot” high frequency receiver, called the FB7, and the subsequent FB-7X. It featured a super-hetrodyne design with plug-in coils that gave it a broad frequency range. The “X” model also incorporated a crystal filter in the intermediate frequency section, thus giving it additional selectivity. The receiver was viewed by radio amateurs as a technological breakthrough, and it was also used commercially for point to point ...show more -
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MEMS Tunable Filter
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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Wavelength Meter
S-107
Wavelength meter slot module of FOTS system offers two main functions of an accurate wavelength meter and a precise tunable band-pass filter. This accurate instrument, which is based on an internal tunable filter, acts as an optical spectrum analyzer or a wavelength meter as well as a low insertion loss tunable filter. The built-in tunable filter of the module is precisely tuned in C-band and L-band optical communication window by using both electronic and optical controlling methods. User can choose the function of this module depending on his or her applications.
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2-Port Optical Tunable Filter
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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Low-Pass Filters
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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Advanced IR Gas Analyzer For Process Monitoring
T-Series
T-Series Inline Gas Analyzer improves gas measurement accuracy over the traditional non-dispersive infrared (NDIR) analyzers using Tunable Filter Spectroscopy (TFS™), a spectroscopic scanning technique capable of generating slices of spectra in the infrared region. Each scan produces an absorption spectrum which is used to identify compounds and provide concentration values. TFS technology improves gas identification accuracy and selectivity by subtracting out spectra from interferent gases within the same infrared regions. This spectral processing capability also provides multi-component measurement.
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Multi-Function Test & Measurement System
Optoplex’s Multifunction Test and Measurement System (TM100 Series) is designed to provide a flexible and cost effective optical test and measurement solution, particularly for manufacturing lines. The mainframe can be mounted in 19” rack or stationed on desk-top for ease of use. There are many selections of the pluggable modules, from tunable laser, optical spectrum analyzer, EDFA, power meter, ASE light source, optical tunable filter, optical performance monitor, …, etc.
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Mini Optical Spectrum Analyzer
Shenzhen Golight Technology Co.,Ltd
Mini OSA is based on MEMS tunable filter and high precision photoelectric control unit and detection unit. Its measurement precision is superior to the traditional OSA in C-band and O-band. And built-in USB communication interface is easy for system integration and SDK.
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Tunable Filters
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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Electronically Tunable Filters
ETF
Radar. Communications. EW/SIGINT. Frequency agile channelization. Frequency agile noise rejection filter. Local oscillator tracking filter. Controlled bandwidth and center frequency noise source.
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Narrow Band Filters (Single Octave)
POWER-POLE® Series
The POWER-POLE® Series of tunable filters provides improved RF performance with increased power handling capability and the lowest insertion loss for a given bandwidth. The product line includes several standard designs in various frequencies to support almost any application. Approximate performance is summarized in the POWER-POLE Series Selection Guide.
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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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Tunable Filter Spectrometers
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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High-Power Tunable Filter
CB503
The need for tunable filter technology originates from the fact that high power communication systems and IED Jammer transmitters severely limit the use of tactical radio communication systems on the battlefield.This clash within the radio’s spectrum during tactical missions is often de-conflicted using fixed high Q, high power RF bandpass and bandstop filters installed prior to mission. This can limit operational effectiveness due to the potentially large number of fixed filters required within...show more -
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MultiGas™ TFS™ Gas Monitor For Multi-Compound Gas Analysis
The MultiGas™ TFS™ Monitor is an online, multi-compound, trace gas monitoring system in a stand-alone 19-inch rack enclosure. It uses an innovative tunable filter spectroscopy technology enabling high selectivity and stability measurement. Low detection limit (sub-ppm levels for most gases) is achieved through the use of high throughput optics coupled with a long-path gas cell and a high sensitivity detector.
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Compact Digital Receiver
DCR822
The DCR822 compact 2-channel digital receiver with analog and digital audio outputs utilizes the Lectrosonics signature digital architecture with remarkable audio quality and ultra-low latency. The receiver includes an extended operating range rivaling the best analog and Digital Hybrid Wireless® systems with continuously tunable tracking filters covering 470.100 - 614.375 MHz. The innovative Vector Diversity technology raises the bar for digital transmission integrity with two RF front ends per...show more -
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Tunable Detectors
Due to their spectral properties and robustness, pyroelectric detectors have proven themselves for many years in numerous applications in gas analysis, flame detection and spectroscopy. They enable the tuning of the optical filter over a defined spectral range by simply adjusting the control voltage. Instead of mounting filters to inspect specific areas of interest as is conventionally common, the detector with tunable Fabry-Pérot filters (FPF) can be used to monitor a broad spectral region continuously.
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Tunable Filters - Digitally Controlled
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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Tunable Edge Filters
Tunable edge filter is a customized product. It usually belongs to 2-port optical tunable filter product platform. Instead of using narrow bandpass filter in the 2-port tunable optical filter, the tunable edge filter utilizes a low-pass or long-pass interference filter. By changing the incident angle of the light beam, the cut-off wavelength will be tuned. Standard Tunable edge filters support C-band or L-band wavelength range.
