attenuator


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

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 ?
Introduction of Attenuator Industry: Along with Brief Introduction of Attenuator Industry it includes Development of Attenuator Industry and Status of Attenuator Industry.
The new continuously variable waveguide attenuators from Pasternack are offered in 5 unique models covering a broad frequency range of 33 GHz to 110 GHz in five bands.
The Smith chart in Figure 6 illustrates the ideal paired complementary control signals (I/IN) for a balanced attenuator assuming four ideal equal split (that is, 3 dB) Lange couplers and four matched PHEMT devices.
A summary of promoter and attenuator mutations, as well as alterations in outer membrane profiles, is shown in Table 1 and Figures 1 and 2.
MEMSCAP High Voltage Variable Optical Attenuators are available today for sampling and production shipments.
The low-power (calibrated levels from pW to 2W) 818 series detectors operate from 200 to 1800 nm and feature matching patented, removable OD3 attenuators for each photodetector.
In the field, operation of these new noise-source treatment attenuators has been very quiet.
In February 2011, MEMSCAP released die level tests on the Thermally Actuated MEMS Variable Optical Attenuator product line confirming that the MEMS devices operate within all specifications even after 200 millions cycles.
The unit is made for use with single mode fibre and can support up to eight fibre optic attenuators in a single 1-wide GP750 module.
Because the reflected signal travels twice through the signal chain, the return loss will be reduced by twice the attenuator value
Recent die level tests on the Thermally Actuated MEMS Variable Optical Attenuator product line confirmed that the MEMS devices operate within all specifications even after 200 millions cycles with all optical, mechanical and electrical properties remaining within their strict initial specifications.
Tenders are invited for on-call repair of guardrail, cable median barrier, impact attenuators and fence, includes 875 ft steel plate beam guardrail; 625 ft repair steel plate beam guardrail; 325 ft strong post guardrail; 325 ft weak post guardrail; 69 traffic barrier terminals; 63 repair traffic terminals; 850 ft guardrail removal; 4 impact attenuators; 40 remove and replace impact attenuator and modules; 1,450 ft repair high tension cable; 6 high tension barrier terminals; 29 repair high tension barrier terminals; 305 repair posts; 440 remove and replace posts; 425 ft chain link fence; 300 ft woven wire fence.