User’s manual
6.1. SWR measurement of antennas
While the ISM band covers frequencies from 2.4 to 2.5 GHz only, it is appropriate
to scan wider range (2.3 to 2.6 GHz) to see how the SWR curve behaves at different
frequencies.
In the first case, a simple antenna (taken from a Wi-Fi access point) was measured
(see the screenshots below). It can be easily seen that the minimum SWR (about 1.3) is
achieved at the very center of the Wi-Fi band. The values at 2.4 and 2.5 GHz are not very
high either (about 1.5), so it looks like the antenna under test is performing quite well.
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6. Examples of use
