Directional Detector DD111 Datasheet - S-TEAM Lab
Directional Detector DD111 Datasheet - S-TEAM Lab
Directional Detector DD111 Datasheet - S-TEAM Lab
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<strong>DD111</strong>: Fast Temperature-Stable <strong>Directional</strong> <strong>Detector</strong> for<br />
R-26 Waveguide<br />
General Description<br />
<strong>DD111</strong> is a miniature directional detector<br />
intended for sampling pulse-modulated<br />
incident or reflected waves in high-power<br />
2450 MHz industrial applications using R-26<br />
(WR-340) rectangular waveguide. The<br />
detector combines three components:<br />
the <strong>DD111</strong> causes it to sample the wave<br />
propagating in the opposite direction. The<br />
tunnel diode detector module assures high<br />
temperature stability of the output voltage and<br />
low video resistance for fast pulse rise/fall<br />
times.<br />
• <strong>Directional</strong> coupler<br />
• Attenuator<br />
• Tunnel diode detector<br />
The directional detector delivers well-scaled<br />
DC voltage proportional to the power of the<br />
wave propagating in one direction in the main<br />
waveguide. The coupler is attached to the<br />
waveguide by six M3 or similar-diameter<br />
screws after machining of appropriate holes in<br />
the broad waveguide wall. Simple reversing<br />
Specifications<br />
Frequency range<br />
Directivity<br />
Statistical spread of output voltage<br />
Output voltage polarity<br />
Output voltage temp. variation (5 to 65 0 C)<br />
Video resistance (typ)<br />
Output DC connector<br />
Waveguide of destination<br />
Waveguide wall thickness<br />
2425 - 2475 MHz<br />
25 dB min<br />
±1 dB (3-σ deviation)<br />
Negative<br />
< 0.5 dB<br />
120 Ω<br />
SMA-F<br />
R-26 (86.36 mm x 43.18 mm)<br />
2 mm<br />
S-<strong>TEAM</strong> <strong>Lab</strong>, Chrobakova 2, P.O. Box 35, 840 02 Bratislava 42, Slovak Republic<br />
Tel./fax: +421 - 2 - 6542 7968 http://www.s-team.sk
<strong>DD111</strong><br />
Typical Transfer Characteristic, New Model (f = 2450 MHz, T A = 25 ºC)<br />
180<br />
S/N 659 and more<br />
160<br />
140<br />
120<br />
100<br />
-Vout (mV)<br />
80<br />
60<br />
40<br />
20<br />
0<br />
0 2 4 6 8 10 12 14 16<br />
Pin (kW)<br />
-Vout (mV)<br />
24<br />
22<br />
20<br />
18<br />
16<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
S/N 659 and more (detail)<br />
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2<br />
Pin (kW)<br />
REV. B0. Data subject to change. - 2 - 23-Jun-2009
<strong>DD111</strong><br />
Typical Transfer Characteristic, Old Model (f = 2450 MHz, T A = 25 ºC)<br />
180<br />
S/N 001 - 637<br />
160<br />
140<br />
120<br />
-Vout (mV)<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
0 1 2 3 4 5 6 7 8 9 10 11 12<br />
Pin (kW)<br />
REV. B0. Data subject to change. - 3 - 23-Jun-2009
<strong>DD111</strong><br />
Dimensional Drawing (all units in millimeters)<br />
REV. B0. Data subject to change. - 4 - 23-Jun-2009
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