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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.
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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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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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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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Harmonic Filters
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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Sine Filters
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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Highpass Filters
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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Active Scanning Technology
ZEISS invented scanning in response to the drawbacks of single-point measurement nearly 50 years ago. This game-changing development enables the capture of thousands of data points within just a few seconds for truly reliable tactile quality assurance. It also saves time and money by delivering the high throughput and accurate results that are vital for manufacturing.
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Active Temperature-Humidty Transmitters
HD48… Series
HD48 transmitters are designed for temperature and humidity control in conditioning and ventilation applications (HVAC/BEMS) in the following sectors: pharmacy, museums, clean rooms, ventilation ducts, industrial and civil sectors, crowded places, canteens, auditoria, gyms, high-density farms, greenhouses, etc.
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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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Dual Filter
Trig-TekTM 550D
Two channels with variable high pass and low pass filters in a module 7" high x 2.6" wide
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Active Monopole Antenna
AM-741
The 41 inch Monopole antenna is required for making electric field emission measurements below 60 MHz per Military standards (MIL-STD-461) and FAA (DO-160) specifications. This antenna is for emissions measurements only. It cannot be used for transmitting. The Active Monopole antenna is generally used in a shielded room or in a screen room, with the equipment under test (EUT) placed on a metal ground plane. The 41 inch rod and the ground plane behave electrically as though a mirror image of the rod were located below the ground, and the ground removed. Since the stainless steel plate does not have enough surface area to mirror the entire 41 inch rod, it is bonded to the surrounding ground plane during use. The AM-741 is battery powered to prevent measurement errors that maybe caused by external power cables. The ANSI equivalent capacitance substitution (ECSM) method is the recommended method for calibrating AM-741 monopole antenna. The individual calibration data will be included with each antenna.
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Antenna, Active Loop
EM-6876 | 9 KHz – 30 MHz
The Electro-Metrics EM-6876 Active Loop Antenna is used with EMI Receivers and Spectrum Analyzers with 50 ohm input and covers the frequency range of 9 kHz to 30 MHz.
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Active biconical Antennas
BicoLOG X Series
Only a single broadband test antenna for the complete frequency range from 20MHz up to 3GHz. Optimal for usage with spectrum analysers for EMC measurement. Active Antennas with high gain up to 41dBi.
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Broadcast Filters UHF
RFS Waveguide UHF filters are now 4th generation products designed for global combining and filtering applications associated with DTV and analog television transmissions.
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Active Splitter for CATV/SATV
HGS02
Hangzhou Huatai Optic Tech. Co., Ltd.
*Excellent, zinc alloy die-casting chassis. *All ports can be passed by DC.* 75ΩBritish F-type connector.* With separate holes for easy installation. *Low noise, high isolation design. *Frequency 950-2150MHz.
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Individual Optical Filters
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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Active RF Switches
Active RF Switches by Teledyne Relays - relays and switches - packaged-InP, relays and switches - InP-Die, and more
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Filters / Splitters / Detectors
DiCon’s 100 GHz WDM is designed to multiplex and demultiplex signals in multi-wavelength systems based on the ITU 100 GHz grid. The component uses a thin film filter mounted between a pair of GRIN lens collimators. The 100 GHz WDM is housed in a compact, environmentally stable package that offers superior resistance to humidity and temperature and is suitable for mounting on a printed circuit board or within a module.
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Lowpass Filters
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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Blocklist Based Filtering
Many businesses prefer to use blocklists prepared by external intelligence agencies to save the time of generating this data themselves. Also, to get as much exposure and intelligence of the threat landscape as possible. However, this blocklist information can be sent in various formats, making utilizing them a challenge. Luckily, FastNetMon is a flexible blacklisting feed filtering tool that supports a vast array of formats to receive, consume, and use blocklists from different intelligence feed providers. FastNetMon then enables you to block specific malicious and dangerous hosts using blocklist-based filtering.
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Active Type Hydrogen Frequency
CH1-1003M
Hydrogen frequency and time standard Ch1-1003M is designed for precision storage and reproduction of the size of frequency and time units as part of measures and reference complexes. Main applications: – national time and frequency services; – ground stations for tracking and control of satellite radio navigation systems; – radio interferometry with extra long base.
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Automated Filter Tester
8130A
The Automated Filter Tester Model 8130A continues to be the best solution for testing particulate respirator filters, disposable filtering face pieces, and a wide assortment of filter media. The TSI filter testers have been used in quality control and manufacturing by leading filter and filter media manufacturers and test centers around the world for more than 20 years.
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Super-Notch YIG Band-Reject Filters
YIG Tuned BRF patented technology gets closer to the ‘perfect notch'. Leveraging a long heritage of engineering innovation in YIG technologies, Teledyne RF & Microwave has developed a line of YIG Tuned Band-Reject Filters powered by patented new technology that overcomes many long-time design limitations inherent to YIG Band-Reject or “notch” filters. Our new line delivers major advancements and unequalled performance.
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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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Automatic Batteries with Filters with Thyristors
BATLVFS800
Lifasa - International Capacitors, SA
LIFASA automatic capacitor banks are used for centralized compensation of powerfactor in low voltage instalations.
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Automatic Batteries with Filters with Thyristors
BATLVFS600
Lifasa - International Capacitors, SA
LIFASA automatic capacitor banks are used for centralized compensation of power factor in low voltage instalations.
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Active Air Speed Transmitter
HD103T.0
Active air speed transmitter with hotwire sensor. Probe with 5m cable. Speed 0.1…5 m/s. Outputs for temperature and airspeed.
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5U Grille & Filter Assembly
GF-819
5U (8.75") Grille & Filter Assembly Features easily removable, washable media filter.
