Millimeter-Wave Measurement Instruments and Waveguide Components

Direct Reading Attenuator with Remote Control

Direct Reading Attenuator

DA2XE 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 frequency. The attenuator has electronic control. The attenuator can be used in local or remote (via USB 1.1 or higher) operation modes.
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
DAD-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
DAD-08E 26.5 - 40 WR - 28 UG 599/U 0.6 max 1.15 max
DAD-06E 33 - 50 WR - 22 UG 383/U 0.8 max 1.15 max
DAD-04E 50 - 75 WR - 15 UG 385/U 1.0 max 1.15 max
DAD-035E 60 - 90 WR - 12 UG 387/UM 1.5 max 1.2 max
DAD-03E 75 - 110 WR - 10 UG 387/UM 1.5 max 1.2 max
DAD-025E 90 - 140 WR - 08 UG 387/UM 2.0 max 1.2 max
DAD-02E 110 - 170 WR - 06 UG 387/UM 2.0 max 1.2 max
DAD-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.)