MICROWAVE ABSORBER "TOPA"


       Microwave absorber "TOPA" is a pyramidal shaped, carbon loaded elastic polyurethane foam EM absorber material. This material may be applied for covering of anechoic chambers, and for construction of test equipment for antenna measurements. Absorber is made in form of panel.
       Correspond to sanitary hygienic norms.

Reflectivity
for normal incidence, dB.

Frequency GHz 0.5 1.5 3 4 10 37.5
TOPA-39 -25 -35 -40 -45 -50 -50
TOPA-25 - -30 -35 -40 -45 -50
TOPA-9 - - -20 -30 -40 -45

MAIN PROPERTIES

  TOPA-39 TOPA-25 TOPA-9
Dimension mm 480x480 480x480 490x490
Total height mm 390 250 90
Pyramid height mm 310 190 75
Number of pyramids per panel 16(4x4) 36(6x6) 225(15x15)
Weight of panel kg 2.4 1.8 0.7
Service conditions:      
 - Environment temperature +5 to +45°C +5 to +45°C +5 to +45°C
 - Relative humidity of air 30 to 90% by +25°C 30 to 90% by +25°C 30 to 90% by +25°C
Term of work 10 years 10 years 10 years
Colour of panel blue blue blue


Institute of Applied Phyisical   ZAO "TOPA"
Problems of BSU   Chervakov st. 24, MINSK BELARUS 220053
Kurchatov st. 7, MINSK, BELARUS 220064      
phone +375 17 212 24 80   phone +375 17 233 89 02
fax +375 17 278 04 17   fax +375 17 233 82 89
E-Mail budai@cosmostv.by   E-Mail tora@tut.by

Russian version