SKU: RF-Explorer-RFEAH25-Near-Field-Antenna H-Loop RFEAH-25 Near Field Aerial

H-Loop RFEAH-25 Near Field Antenna

RF Explorer RFEAH-25 is a 25mm diameter, high performance near field H-Loop antenna. The RFEAH-25 is a very sensitive, compact and easy to use H-loop near field antenna.

The low-loss design exhibits at least 10dB more sensitivity in the range 20-6000MHz than other H-loop options in the market, at a much lower cost. RF guys use "near field" antennas. They offer way more resolution for close-by diagnosis, and are mostly unaffected by far field transmission. Unfortunately, most near field antennas cost several times more than RF Explorer device itself; they are used for very specific tasks and not sold in the mass market. So most cost-sensitive setups would not have access to near field antenna... or that was the story until now.

Compared with other near field antennas, the RFEAH-25 is smaller and lighter, exactly what fits best when space is constrained in a PCB or in equipment. Included with the antenna is high quality semi-flexible RF cable, this cable works as the "handle" of the antenna. The big advantage of this approach: you can shape the cable the way you want for the antenna to be located exactly where you need it, in most cases with no need to hold it in your hand.

H-Loop Near Field Antenna - End View

H-Loop Near Field Antenna for RF Explorers (not included) - Shown in Use

Features:

• Robust calibrated low cost H-loop near field antenna
• Can work with RF Explorer Spectrum Analyser, Signal Generator and other RF instruments and devices
• Easy to use, reliable to find interference sources with high accuracy and resolution
• Can be used to detect hidden bugs and transmission sources with great spatial resolution
• Feasible to generate interferences with Signal Generator and confirm RF circuit sensitivity
• Capable of pre-EMC compliance tests

Uses:

• 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.
• RFEAN25 can be used with RF Explorer Spectrum Analyser and Signal Generator. But it can be used with any spectrum analyser 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.

Specifications:

• Connector: SMA female
• High frequency RF SMA male-male cable included
• Type: H-loop near field
• Characterised response: 20 MHz to 7 GHz
• RoHS compliant

Included:

• 1x H-loop near field antenna
• 1x Semi-rigid SMA Male-Male RG402 10cm 6GHz cable

Calibration Files Download Link Page (External Link)

Near Field Antenna example use (other items not included)

Near Field Antenna example use (other items not included)

Near Field Antenna example use (other items not included)