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INSTRUCTION MANUAL
AL-RE101
LOOP ANTENNA
SECTI ON 4
-
USING YOUR AL-RE101 LOOP ANTENNA
1912 1 E l T o ro R d
●
Si l vera do, Ca lifo rni a 9 26 76
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(9 49) 459 -96 00
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co m-p o wer. com
Rev101617
4.1 Antenna Conversion Factors
Your AL-RE101 Loop Antenna is provided with two sets of antenna conversion
factors. The input impedance of your measuring instrument determines which
factor to use, as described below.
The 50 ohm antenna conversion factors are the most commonly applied. These
are to be used when the AL-RE101 Loop Antenna is connected to a measuring
instrument having a nominal input impedance of 50 ohms. These factors are
provided over the frequency range of 10 Hz to 1 MHz, as shown in
Figure 4
. To
find the factors for frequencies between those listed on the table, see section
4.1.1.
The 100 k
Ω
factors are used when the AL-RE101 Loop Antenna is connected to a
measuring instrument with a high input impedance (greater than approximately
500 ohms). These factors are provided over the truncated frequency range of 10
Hz to 50 kHz, also as shown in
Figure 4
. The antenna should generally not be used
above 50 kHz without a 50 ohm termination.
FIGURE 4 -
Antenna Conversion Factors
Antenna Type
Loop Antenna
Model
AL-RE101
FREQUENCY
100 kΩ
50Ω
(kHz)
[dBpT/μV]
[dBpT/μV]
0.01
90.1
91.6
0.02
84.1
85.7
0.03
80.5
82.1
0.05
76.1
77.7
0.1
70.1
71.7
0.2
64
65.6
0.3
60.6
62.2
0.5
56.1
57.7
1
50.1
51.7
2
44.1
45.7
3
40.5
42.2
5
36.1
37.8
10
30.1
32.2
20
24.1
27.4
30
20.5
25.4
50
16.2
23.9
100
23
200
22.8
300
22.7
500
22.7
1000
22.7
ANTENNA CONVERSION FACTORS
