The PXB pyramid absorbing material is a type of electric loss absorbers, and pyramid structure is applied to perfectly match radio waves. With vertical incidence its wave impedance gradually changes from 377Ω to 0.8Ω, avoiding reflection on the absorber’s surface. For those radio waves entering the absorbing material, with its good electrical conductivity, the absorbing material rapidly transforms the electromagnetic energy to Ohm energy, thus to absorber the radio waves.
Assume the reflectivity of absorber is R, when its thickness wavelength ratio t/λ=0.2, R=-12dB; t/λ=1, R=-30dB; t/λ=8, R=-50dB
Dimension for reference Unit：mm
|
Model
|
Unit Base
B×B
|
Unit
H×L×h
|
Pyramids Qty
|
Weight
Kg/m2
|
|
PXB—J100
|
500×500
|
100×40×30
|
169
|
3
|
|
PXB—J200
|
200×80×55
|
49
|
5
|
|
PXB—J300
|
300×100×60
|
25
|
6.8
|
|
PXB—J500
|
465×55.6×80
|
9
|
8
|
|
PXB—J700
|
400×400
|
650×200×100
|
4
|
10
|
Parameters for reference
|
Model
|
Reflectivity（-dB）
|
|
1
GHz
|
3
GHz
|
6
GHz
|
10
GHz
|
18
GHz
|
40
GHz
|
|
PXB—J100
|
|
30
|
35
|
40
|
45
|
50
|
|
PXB—J200
|
27
|
35
|
40
|
45
|
50
|
50
|
|
PXB—J300
|
30
|
40
|
45
|
50
|
50
|
50
|
|
PXB—J500
|
35
|
45
|
50
|
50
|
50
|
50
|
|
PXB—J700
|
40
|
50
|
50
|
50
|
50
|
50
|
