Millimeter-Wave Measurement Instruments and Waveguide Components

Direct Reading Attenuator

Datasheets

Direct Reading Attenuator

DAXE Millimeter-Wave Direct Reading Attenuator is a measurement instrument for signal level setting or loss measurements in waveguide networks. It also can be used for calibration of other attenuation measurement instruments. Direct Reading Attenuators have rotary-vane design. The value of attenuation is determined by rotation angle of resistive film with respect to the waveguide channel. Attenuation value does not depend on of frequency.
The Attenuators are provided in waveguide bands between 18 GHz and 225 GHz.


Model Frequency range, GHz Waveguide type Waveguide flange Attenuation accuracy Insertion loss, dB VSWR
DA-12E 18 - 26.5 WR - 42 UG 595/U

±0.2dB for A=0÷10dB;

±0.02·A for A=10÷50dB;

±[1+0.08·(A-50)]dB for A=50÷60dB, where

A is attenuation in dB.

 0.5 max 1.15 max
DA-08E 26.5 - 40 WR - 28 UG 599/U 0.6 max 1.15 max
DA-06E 33 - 50 WR - 22 UG 383/U 0.8 max 1.15 max
DA-04E 50 - 75 WR - 15 UG 385/U 1.0 max 1.15 max
DA-035E 60 - 90 WR - 12 UG 387/UM 1.5 max 1.2 max
DA-03E 75 - 110 WR - 10 UG 387/UM 1.5 max 1.2 max
DA-025E 90 - 140 WR - 08 UG 387/UM 2.0 max 1.2 max
DA-02E 110 - 170 WR - 06 UG 387/UM 2.0 max 1.2 max
DA-015E 170 - 225 WR - 05 UG 387/UM

±0.2dB for A=0÷10dB;

±0.02·A for A=10÷30dB;

 3.0 max 1.3 max

Max input power: 0.1 W (CW, avg.)