A.H. Systems AK-285T Manuel d'utilisation - Page 12
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A.H. Systems AK-285R Shielding Effectiveness Antenna Kit
Noise Level
(10 Hz RB) Vt-Vr
DRG Horns
1 GHz
2 GHz
5 GHz
10 GHz
15 GHz
18 GHz
Noise Level: This is the noise level of an HP 8563E Spectrum analyzer at 10 Hz
resolution bandwidth
Vt – Vr: This is the path loss at 1 meter between the transmitting and receiving antennas.
: This is the signal to noise floor safety margin.
Xmtr Amp Margin: Transmitting amplifier safety margin
0 dB Sig Gen Dynamic Range: This is the resulting system dynamic range of the two
antennas with 0 dB out from the signal generator.
Preamp Gain: this is the typical gain of the preamplifier. The biconical and log periodic
antennas use the typical gain of a PAM-0202 (if using the PAM-0118 add an additional 6
dB increase in dynamic range). The SAS-571 uses the typical gain of the PAM-0118.
Dynamic range with preamplifiers: This is the resulting dynamic range where preamplifiers
are used.
1 Watt Power amplifier: This is the gain in dynamic range using a 1 watt amplifier.
Dynamic Range with 1 watt amplifier: This is the resulting dynamic range when using a
power amplifier.
© A.H. Systems inc. – August 2011
REV A
S + N
N
-134
18.8
6
-134
24.1
6
-138
28.6
6
-135
29.2
6
-130
31.6
6
-130
38.2
6
0 dB Sig
Xmtr
Gen
Amp
Dynamic
Preamp
Margin
Range
Gain
6
103.2
37
6
97.9
38
6
97.4
39.5
6
93.8
37
6
86.4
39
6
79.8
38
Dynamic
Dynamic
Range
1 Watt
Range with
with
Power
1W Power
Preamp
Amp
140.2
135.9
136.9
130.8
125.4
117.8
Amp
12