Loop Antennas 20 Hz - 30 MHz

A.H. Systems manufactures a wide variety of loop antennas in the frequency range of 20 Hz to 30 MHz. Loop antennas are primarily used to measure the magnetic field strength at lower frequencies. The small size of these loop antennas has the advantage of convenience in handling, availability of a zero- response orientation, and a simple expression for the voltage produced by a given field strength. At higher frequencies, about above 100 MHz, a loop of practical size may no longer be electrically small and has a significant response to the electric field as well as the magnetic field.

Whether used in a set to measure shielding effectiveness per MIL-STD 285 and NSA 65-6 or individually to satisfy specific requirements, the Loop Antenna is an efficient, low cost solution.


20 Hz - 2 MHz

This 5 1/4" (13.3cm) Loop Sensor is built for MIL-STD-461 low frequency magnetic field testing.


20 Hz - 50 KHz

This 10 turn, 12 cm Loop Coil is used for generating radiated magnetic fields per MIL-STD 461A/B/C.


10 KHz - 30 MHz

This 18" Active Loop Antenna comes with a matching network and preamplifier for magnetic field testing.


1 KHz - 30 MHz

This 12" Broadband Loop Antenna with preamplifier is an excellent solution for shielding effectiveness and emissions testing.

Passive 12 inch loop


1 KHz - 30 MHz

This 12" (30 cm) Passive Shielded Loop Antenna is an excellent solution for shielding effectivness testing.


1 KHz - 30 MHz

Input handling capability up to 500 Watts, and rugged design make this Loop Antenna excellent for shielding effectiveness testing.


1 KHz - 60 MHz

An active, general-purpose, receive-only Monopole and Loop Antenna for both magnetic and electric field testing.