attenuator

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attenuator

[ə′ten·yə‚wād·ər]
(electronics)
An adjustable or fixed transducer for reducing the amplitude of a wave without introducing appreciable distortion.

sound attenuator

In ductwork, a device (usually prefabricated) especially designed to provide much greater sound attenuation than would be provided by an equal length of ductwork; the pressure drop through the device is greater than for an equal length of ductwork.
References in periodicals archive ?
The programmable attenuators from Fairview Microwave have integrated TTL driver logic control bit circuitry that ranges from 5 to 10 binary bits depending on the model.
These millimeter wave waveguide attenuators are commonly used in the aerospace, defense, industrial, telecom, instrumentation and medical industries for applications such as high efficiency RF/microwave transmissions, test benches, SATCOM, MILCOM and radar testing.
Based on the optic and clear aperture of the high performance 918D series detectors, the new attenuator design features a clear aperture with the size reduced to 10mm to help the user align the detector to the input optical beam more accurately.
A balanced attenuator is a broadband design consisting of four Lange couplers, two of which form complementary reflective attenuators for cancellation of the PHEMT capacitance (see Figure 3).
Usually, almost no [beta]-lactamase is produced because the gene is preceded by a weak promoter and a strong attenuator (4).
In the field, operation of these new noise-source treatment attenuators has been very quiet.
The truck was also equipped with an Alpha 60[R] MD truck-mounted attenuator manufactured by Energy Absorption Systems, Inc.
MEMSCAP High Voltage Variable Optical Attenuators are available today for sampling and production shipments.
According to IDT, these next-generation attenuators feature wide bandwidths, low insertion loss, high linearity, pinpoint attenuation accuracy and a wide temperature range.
Pasternack's new digital step attenuators come in 30 dB and 60 dB values and have attenuation step resolution of 0.
These attenuators can be ordered with in-series connector configurations including SMA, TNC, Type-N and 7/16 DIN and come in each gender interface including male-male, male-female and female-female.
According to the company, die level tests on the Thermally Actuated MEMS Variable Optical Attenuator product line confirmed that the devices operate within all specifications after 200m cycles with all optical, mechanical and electrical properties remaining within their initial specifications.