25 July 1996
23 mm Transponder Reference Manual
Page 13 of 22
1
2
5
10
20
50
100
200
500
1,000
0
20
40
60
80
100
120
ELECTRICAL FIELD STRENGTH (VOLTS/m)
430
MHz
145
MHz
900
MHz
READING RANGE (%)
normalized
Figure 11: EMI performance at commonly used radio communication frequencies in
automotive environment.
White noise performance of TIRIS
20
25
30
35
40
45
50
55
60
65
0
10
20
30
40
50
60
70
80
90
100
NOISE LEVEL [dB
µΑ
µΑ
/m]
READING RANGE [%]
AM Systems
TIRIS Pulsed FM
Figure 12: Reading range under broad band noise (white noise) conditions
