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Agilent Accessories > Agilent Attenuators > Agilent Attenuators, Fixed
 

Agilent Attenuators, Fixed


Agilent attenuators achieve flat-frequency response and high accuracy through the use of thin-film attenuator cards. These cards are composed of high-stability tantalum nitride resistive film, deposited on sapphire or alumina substrates. Advanced design and state-of-the-art processes in the deposition stages allow precise control of the geometry and thus the attenuation value. The result is very flat frequency response and greater accuracy.

Fixed attenuators are often used as standards of reference in microwave measurements. Therefore, the accu­racy of the measurement depends not only on the reference accuracy but on the repeatability of the insertion processes. Typical production test situations might require hundreds of connects and disconnects per day. So, measurement repeatability depends strongly on the connectors used.

Agilent attenuators use precision type-N and APC-7 connectors, with repeatability that exceeds the International Electrotechnical Commission (IEC) standard for 7 mm connectors. For higher frequencies, Agilent uses 3.5 mm connectors that are fully SMA compatible, but are more rugged and repeatable than SMA. For applications to 50 GHz, Agilent uses 2.4 mm connectors that also have larger mating surfaces for rugged and repeatable connections. Design verification testing of 3.5 mm connectors showed virtually no test deterioration even after 1000 connections.


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