Data Sheet

RF Explorer Near Field RFEAH-25 Antenna Datasheet
Applications
 Detect radiation: Easily determine the electronic component or PCB signal track creating a
wanted or unwanted RF radiation.
 Sniff and measure: Follow signal path in any RF or high speed digital circuit, with no need to
actually contact the circuit itself.
 Find bugs: Thanks to great spatial resolution, it is ideal antenna to check for RF bugs such as
hidden cameras or microphones in a room.
 Diagnose EMI: Check any electronic device for RF radiation limits. This may include a connector
with leakage, a module creating interference in a drone or RC plane, an oscillator or crystal that
may not be working at the right frequency, etc.
 Pre-compliance EMC testing: Help on finding possible sources of interference in a design before
passing an expensive EMC lab test for approval EU / FCC.
 Create interference: it can be used to introduce RF interference in specific areas of a circuit or
device, to check on side effects as well as diagnose root cause of intermittent problems.
Connect it to a Signal Generator and use CW or Frequency Sweep to check how your circuit
respond.
 Multi-tool: RFEAH-25 can be used with RF Explorer Spectrum Analyzer and Signal Generator. But
it can be used with any spectrum analyzer brand, as well as oscilloscopes. It is DC decoupled up
to 25V so pretty much risk free if makes contact with the PCB circuit under test.
To correctly use the antenna and receive maximum sensitivity, please observe the following suggestions:
The H-Loop antenna works basically as an
inductive coil, capturing magnetic flux.
Therefore, it should be oriented in such a
way the maximum magnetic field is captured.
In most cases, that means you should place
the antenna vertical to the signal trace, as
show in this picture.