Step Attenuators
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Product
Manually Variable Attenuators
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The JFW 50 Ohm dual rotary attenuator has been a staple tool to RF engineers for over 30 years. Our years of proven quality and performance make our manually variable attenuators right for any RF environment. Whether you are using the rotary attenuator on your RF test bench or mounting it to a panel, the JFW dual rotary attenuator makes adjusting attenuation quick and easy.
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Product
Attenuators
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The 01311 attenuator chip series is designed to achieve precision and tight flatness with an attenuation accuracy of ± 0.2 dB on our 1-10 dB pads and ± 0.3 dB on our 11-20 dB pads. SemiGen tests 100% of all attenuator chips prior to shipment to verify that they meet specifications.
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Product
Attenuator Interconnect Kit, Type-N
11716A
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Quickly and conveniently connect 1 dB step and 10 dB step attenuators together to achieve greater dynamic range with 1 dB steps. The Keysight 11716A interconnect kit contains a rigid RF cable, mounting bracket, and necessary hardware to connect any pair of Keysight 8494/5/6/7 attenuators in series. Attenuators must be ordered separately.
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Product
Small Step Frequency Synthesizer
ZFR Series
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ZFR series programmable frequency synthesizers combine multi-octave bandwidth, small step size, low phase noise, fast switching speed, and a compact package size to create a truly versatile synthesizer. The ZFR series can be tailored to the specific frequency range and control interface required, with programmable frequencies to 31 GHz.
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Product
Optical Variable Attenuator
JW3303
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Shanghai Joinwit Optoelectronic Tech,co.,Ltd
JW3303 handhold optical variable attenuator is used for continuously variable optical signal attenuation. As the attenuator is used in the laser system for the on-line testing, therefore, JW3303 can be used in the digital system of communication devices (such as: PHD, SDH) and also in the system of adopting analog modulation (CATV)
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Attenuators And Pulse Limiters
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A bidirectional attenuator, i.e. the attenuation and power capability specification is valid for both directions. There is a large variety of applications for this attenuator: The measuring range of a spectrum analyzer can be increased. Any kind of meter can be protected against overload; it can be used to control the linearity of a meter reading. It can minimize measurement uncertainty caused by mismatched impedances. During an EMI receiver calibration an attenuator directly at the pulse generator output is inevitable.
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Product
SA2500X, 2.5 GHz, ±8 V, 10X Attenuation, Single-Ended Active Oscilloscope Probe
784257-01
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The SA2500X is single-ended, active voltage probe that is used for many different high-speed measurement applications. The probe is powered by an included auxiliary power supply that is internationally compatible and certified. You can use it with oscilloscopes that provide 50 Ω input impedance.
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Attenuators
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Teledyne Microwave Solutions (TMS) offers a variety of analog controlled attenuators operating over a 10MHz to 26GHz range. With many units operating over many octaves, switching speeds less than 100nS and attenuation control up to 50dB, TMS has a product that meets your demanding needs.
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Product
Desktop Variable Optical Attenuator
UC8310
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The UC8310 Desktop Variable Optical Attenuator offer superior performance for channel balance, power equalization, gain tilt and power adjust of DWDM system, EDFA, AWG & PLC components, optical amplifiers, and other general purpose of fiber optical test and measurement applications.
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Product
Attenuator Interconnect Kit, 2.4 mm
11716F
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The 11716F attenuator interconnection kit provides the necessary parts to connect 84904/8M and 84904/6L programmable step attenuators in series.
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Product
High Voltage Pulse Attenuators
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Barth High Voltage Pulse Attenuators are matched impedance coaxial attenuators for use primarily in pulsed 50 ohm systems, or where occasional transients would damage ordinary units. The attenuator design closely matches the impedance around each resistor, to that resistor. These attenuators feature an input impedance very close to 50 ohms, with characteristics as good or better than most microwave attenuators. These units are ideal for use in nuclear and high energy experiments. Extensive testing during manufacturing insures very high reliability for single-shot experiments. A voltage coefficient of the resistive film of less than .0001 %/V allows low voltage calibration of most systems.
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Fixed Attenuators
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Macom Technology Solutions Holdings Inc.
MACOM offers fixed attenuator bare die to be used in chip and wire assemblies. These products offer excellent return loss and flat attenuation from DC to 50 GHz. Attenuation values range from 0 to 20 dB.
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Product
Digital Attenuator Operating Frequency of 1 to 20 GHz
LDA Series
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The LDA series of Lab Brick® RF and Microwave Programmable Digital Attenuators includes 50 Ohm and 75 Ohm bidirectional RF step attenuators with calibrated operation up to 20 GHz. These USB powered and controlled units require no additional DC supply voltage. They are easily programmable for fixed attenuation or swept attenuation ramps directly from the included GUI. Lab Brick Digital Attenuator API DLL, Linux drivers and LabVIEW-compatible drivers are also available for custom programming applications.
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Product
Variable Optical Attenuator
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Shenzhen Golight Technology Co.,Ltd
Variable optical attenuator uses high-precision attenuation control components, and combines a selfdeveloped embedded data processing platform and precise calibration process, can be provided with maximum 60dB optical power attenuation and optical power monitoring function. Real-time display of input and output optical power.
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POWER ATTENUATORS
TYPE ATF
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National RF’s Type ATF Power Attenuators were designed to allow interfacing of linear power amplifiers to RF exciters, where a specific amount of drive to the amplifier is prescribed. Often, however, drive from the RF exciter exceeds this minimum prescribed level and some form of power attenuation must be used in order to not damage the input of the power amplifier. National RF’s type ATF-3 offers 3 dB of power attenuation (1/2 of the power) when used between the exciter and the amplifier and will handle an input power of 132 Watts, RMS (continuous power) while providing about 66 Watts RMS output power, when it is terminated into 50 ohms. In practice, the ATF-3 attenuator will handle exciters achieving Peak Envelope Power levels (PEP) in the area of 200 to 250 Watts while providing half of that power to the load. For less attenuation requirements, the ATF-1 and ATF-2 offer 1 and 2 dB of attenuation, respectively.
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HVFO10X +/-20V (20x Attenuation) Universal Tip Accessory
HVFO100-20X-TIP-U
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HVFO10X +/-20V (20x Attenuation) Universal Tip Accessory.
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Product
Standard Step Tablets, Gray Scales & Density Reference Charts
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Standard Step Tablets, Gray Scales & Density Reference Charts are available in a wide variety of patterns, designs and sizes to fit a multitude of today’s application needs. Our gray scales and density patches are measured on a variety of NIST traceable instrumentation, including some of the most sophisticated microdensitometers available to the industry. They are imaged on either Photo Paper (RM) or Film (TM) to function for reflective or transmissive applications.
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Digital Attenuators
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Compact microwave digital step attenuators with low insertion-loss, USB control and power, 60 or 90dB max setting, 0.25 or 0.5dB step size, ranging from 10MHz to 24GHz. Front OLED display and user control buttons standard.
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RF Attenuators
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Home > Products > Test and Measurement > AttenuatorsBird - The RF ExpertsRF AttenuatorsBird manufactures a broad spectrum of devices from 2 W to 4000W. Our resistive product portfolio includes air-cooled, water-cooled, oil-dielectric, convection cooled, and conduction cooled RF attenuators with a wide range of connectors and attenuation values.
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Product
Small Step Broadband Synthesizer
SBC Series
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*Connectorized Package *Fine Resolution Design *Broadband Designs Available *Low Phase Noise *Ultra-Low Spurs *Optional Internal Reference
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Variable Attenuators
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Wuhan Sunma Technology Co., Ltd.
SunmaFiber offer optical variable attenuator is used for continuously variable optical signal attenuation. As the attenuator is used in the laser system for the on-line testing, there can be used in the digital system of communication devices (such as:PHD, SDH) and also in the system of adopting analog modulation (CATV).
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One-Channel Variable Optical Attenuator
N7761A
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The N7761A attenuator is an extension to Keysight's high density N77xx-family that establishes a new standard in space-saving fiberoptic instrumentation.
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Step Up Transformer
MagD
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SCOPE proudly introduces Step-Up Transformer - MagD, specially designed to cater the needs of testing of instrument Transformers. Before new systems are put into service or after any occurrence of fault, the instrument transformers need to be tested for their outputs. It is to be ensured that these instrument transformers are giving proper outputs to the protective relays. MagD is used to plot excitation curves for instrument transformers. Inbuilt voltmeter and ammeter, eliminates the need of external meters for plotting of curves. It can also be used for de-magnetization of transformer cores and also turns-ratio tests can be conducted using MagD.
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SP500X , 500 MHz, ±300 V, 10X Attenuation, Single-Ended Passive Oscilloscope Probe
783629-01
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The SP500X, or Multi-Contact Isoprobe IV - 10:1, is a standard passive probe with fixed 10x attenuation for oscilloscopes that provide 1 MΩ input impedance.
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Attenuators
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A device consisting of an arrangement of resistors which reduces the strength of a radio or audio signal.
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Variable Optical Attenuators
5418
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The FOD 5418, 5419, 5420 Variable Optical Attenuators are designed for singlemode application at 1310 and 1550 nm or multimode application at 850 and 1300 nm. They allow variable attenuation settings in range from 0 to 80 dB with resolution 0.05 dB.
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USB/RS232/SPI Programmable Attenuator
RUDAT-13G-90
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Mini-Circuits’ RUDAT-13G-90 is a general purpose programmable RF attenuator supporting frequencies from 10 to 13000 MHz with attenuation from 0 to 90 dB in 0.5 dB steps. Its unique design maintains linear attenuation change per dB, even at the highest attenuation and frequency settings. The attenuator is controlled via USB, RS232 or SPI. It comes housed in a compact, shielded metal case with SMA(F) input/ output RF ports (RF ports are interchangeable), a USB type Mini-B socket, and a 9-pin D-sub(F) RS232 and SPI port. Power can be supplied via either USB or the D-sub port. The RUDAT-13G-90 is supplied with our easy-to-install, user-friendly GUI software, API objects for Windows® environments, and complete programming instructions for 32 and 64 bit Windows® and Linux® operating systems. See p. 9 for a complete list of included accessories.
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Product
HVFO10X +/-10V (10x Attenuation) Universal Tip Accessory
HVFO100-10X-TIP-U
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HVFO10X +/-10V (10x Attenuation) Universal Tip Accessory.





























