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Features

  • Models from 1.72 GHz to 500 GHz
  • 0 dB – 30 dB* Calibrated Attenuation Range
  • Low VSWR

The Flann Series 020 of Calibrated
Variable attenuators are fitted with a
stable precision attenuating elements
driven across the waveguide section by
a micrometer.

The micrometer drive is free from backlash,
permitting attenuation calibration to a
high accuracy. The micrometer is fitted
with a locking device which enables the
adjusting mechanism to be set and locked
at any setting. The attenuating elements
are constructed from an extremely stable
ni-chromed glass composite.

*WG29 – WM570 calibrated attenuation
range 0 – 25 dB

On models 08020 to 21020 the vane
is introduced transversely across the
waveguide.

Models 22020 – 570020 have a vane introduced through a slot in the centre of the broad wall.

A calibration is provided at the centre band frequency unless otherwise specified.
Calibration at additional frequencies can be provided at extra cost.

           
ModelFrequency Range (GHz)WaveguideVSWR
(Max)
Calibration Accuracy (±dB)Calibration Frequency (GHz)Maximum Insertion Loss
(dB)
Maximum Power (Watts)
WGWMRWR
80201.72 - 2.618-224301.070.22.170.24
100202.60 - 3.9510-322841.070.23.280.22.5
11A0203.22 - 4.9011A-402291.070.24.10.22
120203.94 - 5.9912-481871.070.24.970.22
130204.64 - 7.0513-581591.070.25.850.22
140205.38 - 8.1814-701371.070.26.780.21
150206.58 - 10.015-841121.070.28.290.21
160208.20 - 12.516-100901.070.210.350.21
170209.84 - 15.017-120751.070.212.420.20.75
1802011.9 - 18.018-140621.070.314.950.30.75
1902014.5 - 22.019-180511.070.318.250.30.75
2002017.6 - 26.720-220421.070.322.150.30.5
2102021.7 - 33.021-260341.070.3527.350.30.5
2202026.4 - 40.122-320281.070.433.250.40.4
2302033.0 - 50.123-400221.070.241.550.20.35
2402039.3 - 59.724-500191.070.249.50.20.3
2502049.9 - 75.825-620151.070.2562.850.20.25
2602060.5 - 92.026-740121.070.376.250.30.2
2702073.8 - 11227-900101.070.492.90.40.15
2802092.3 - 14028-120081.090.6116.20.50.12
29020*114 - 17329-140061.110.91400.70.1
30020*145 - 22030-180051.151.31800.80.08
31020*172 - 26131-220041.1812150.70.06
32020*217 - 33032-260031.241.527510.05
710020*260 - 400-710-'2.8'1.323301.20.04
570020*330 - 500-570-'2.2'1.4241530.03
     
ModelDimensions (mm)
AB MaxCDia D
10020430223138151
11A020380217132151
120203701459286
130203401418986
140203101388664
150202401328364
160201801277964
170201801257864
180201501005435
19020125975235
2002080955135
2102080945035
22020809031-
23020758531-
24020758531-
25020608022-
26020608022-
27020608022-
28020608022-
29020608022-
30020308022-
31020258022-
32020258022-
710020208022-
570020208022-