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DD111: Fast Temperature-Stable Directional Detector for R-26 Waveguide

DD111 is a miniature directional detector intended for sampling pulse-modulated incident or reflected waves in high-power 2450 MHz industrial applications using R-26 rectangular waveguide.

The detector delivers well-scaled DC voltage proportional to the power of the wave propagating in one direction in the main waveguide.

Simple reversing the DD111 causes it to sample the wave propagating in the opposite direction.

The tunnel diode detector module assures high temperature stability of the output voltage and low video resistance for fast pulse rise/fall times.

Frequency range 2425 2475 MHz
Directivity 25 dB min
Statistical spread of output voltage ±1 dB (3-σ deviation)
Polarity Negative
Temperature variation of output voltage < 0.5 dB in 5 to 65°C range
Video resistance (typ) 120 Ω
DC output connector SMA-F
Waveguide of destination R-26 (86.36 mm x 43.18 mm, wall thickness 2 mm)
Microwave Directional Detector DD111
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Technical Information
Microwave Directional Detector DD111 Datasheet Directional Detector DD111 Datasheet