Science and technology are growing so rapidly that electronic
equipment and instruments are widely used, but the emission of
electromagnetic radiation is also introduced and occurs at the
same time so that it continues to potentially cause health problems.
One effective way to detect EMI emissions is by conducting Precompliance testing using a tool in the form of probes, namely
Magnetic Field Probes. The role of pre-compliance testing
provides an initial indication of whether the equipment might meet
requirements when Full-compliance testing is carried out. When
measuring using M1 Loop - H Field and Probe 1 twist and Probe
2 windings as is known from this final project (TA) it is expected
that Magnetic Field Probes sensitivity is above -68 dBm. After
measurement using M1 Loop - H Field and Probe 1 Windings and
Probe 2 Windings as expected above -68 dBm which is -26,36 dBm.
When testing it is known that the sensitivity of Probe 2 coil is better
than Probe 1 coil. This is because the number of turns used is
different, which is designed by using two turns where the magnetic
field generated by one coil is reinforced by other turns. The
magnitude of the magnetic field depends on the number of turns,
the more the number of turns, the greater the value of the magnetic
field produced. Then, electronic devices are used as objects for
measuring emission of electromagnetic radiation, namely EM
Demo Board, PABX and Led Driver. The standard used is EN
55011 (Standard CISPR11) with a frequency range of 30 MHz to 3
GHz.
Keywords: Loop antenna, Electromagnetic Induction, Magnetic
fields, Magnetic fields probes, Pre-compliance, Full-Compliance,
Radiated Emission, Standards EN 55011 (CISPR11).