Civil Engineering Reference
In-Depth Information
100
90
80
70
60
50
40
30
20
10
0
We t
Saturated
Air-dried
Oven-dried
0
2
4
6
8
10
Distance from the Microwave Incident Surface (cm)
Figure 3.19
Temperature distribution in concrete after 5 seconds of microwave heating
at 2.45-GHz frequency.
160
We t
Saturated
Air-dried
140
120
Oven-dried
100
80
60
40
20
0
0
2
4
6
8
10
Distance from the Microwave Incident Surface (cm)
Figure 3.20
Temperature distribution in concrete after 2 seconds of microwave heating
at 10.6-GHz frequency.
in various media. Modes are eigenvalues of the equation system (Maxwell's
equation and boundary conditions). Each microwave mode is character-
ised by a cutoff frequency, which is the minimum frequency at which the
mode can exit the waveguide. If the frequency of the excited mode is above
the cutoff frequency, electromagnetic energy will be transmitted down
Search WWH ::
Custom Search