30 Enabling the Industrial IoT Revolution
-20.0
-18.0
-16.0
-14.0
-12.0
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0
Return
loss
(dB)
freequency (GHz)
free spac e
on PC B
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0
VSWR
frequency (GHz)
free spac e
on PC B
60%
65%
70%
75%
80%
85%
90%
2.4 2.42 2.44 2.46 2.48 2.5
efficiency
(dB)
frequency (GHz)
free spac e
on PC B
Antenna Performance Characteristic Plots
RETURN LOSS
VSWR EFFICIENCY
Figure 4: Return loss of the antenna
Figure 5: VSWR of the antenna Figure 6: Efficiency of the antenna
TEST SET UP
The Keysight E5071C network analyzer can test antenna
return, loss and VSWR.
Figure 1: Keysight E5071C network analyzer Figure 2: Satimo 3D chamber
The Satimo 3D chamber can test the antenna
efficiency and radiation pattern.
"Amphenol MCP offers
several types of IoT antennas
with different working
frequencies."
