The principle of operation is that an RF voltage appears across the terminals of a loop when it is placed in an electromagnetic field. This voltage is proportional to frequency for a given field strength. Therefore at Very Low Frequencies, the voltage is very small, and requires greater amplification.
VVL 1530 is a complete 3-axis antenna with a manual switching unit to select each loop in turn. The loops are 2m in diameter with the lowest point 0.5m above ground and are fitted with specially designed current transducers in fully screened housings. Ambient interference is strongly suppressed in open area measurements. VVL 1530 is designed to be collapse down to subunit of convenient size, easy to store. Assembly and disassembly is very fast, no screws necessary.
A.H. Systems' designs, manufactures and delivers high performance Loop Antennas for a wide range of magnetic field testing. Whether used in a set to measure shielding effectiveness per MIL-STD 285 and NSA 65-6 or individually to satisfy specific requirements,
Type HFDF active directional antenna system consists of a high gain RF amplifier coupled to a tunable Faraday shielded loop antenna. Several loop antenna assemblies are available to provide coverage of frequencies in the HF and low VHF spectrum
Benetel's antenna designers specialize in the design of: * Microstrip Patch Antennas * Planar Inverted F Antennas (PIFAs) * Printed loop antennas for short range devices (SRD)These types of antennas are particularly suited to wireless products that require low cost and low profile solutions.