Chapter 12 EMF (EMI) Operation
Measurement antennas
9102 Handheld Spectrum Analyzer Software version 5.31
189
9170 Biconical Antenna
Biconical antennas are characterised by their dipole-like structure. The
two reception lobes are highly symmetrical and provide the biconical
antenna with two main reception directions with an opening angle of
120° each.
When manually turning the biconical antenna during measurements
into three main panes (x, y, z) the same antenna element is used for the
measurements in each of the different directions. This leads to an
unmatched isotropy and thus makes biconical antennas most suitable
for high-precision measurements. Mounting the antenna on a turning
device you can easily turn the antenna in the directions indicated on
the device and perform the measurements for each pane. Thereby a
globe-like coverage for the measurement, comparable to the one using
an isotropic antenna, is achieved as shown in the following graphic.
The 9102 supports consecutive measurements in three axes and auto-
matically calculates the resulting field strength.
Aeroflex offers the 9170 Biconical Antenna for EMF immission
measurements with the 9102 and the 9131 EMF Measurement Option.
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