The separation distance from an antenna can be divided into several regions. The transition between these regions is not distinct and the changes in antenna performance will be gradual. The regions depend on the maximum linear dimension of the antenna and the wavelength. This tool that will calculate the near-field and far-field distances based on the antenna dimension and wavelength.
For electrically small antennas (where D < λ / 2) there are only two regions; near-field and far-field. For electrically large antennas there are three regions; reactive near-field, radiating near-field and the far-field distance.
High gain, low VSWR, and rugged design make this dual ridge horn antenna excellent for both immunity and emissions testing.
This tool will calculate the maximum coverage that the antenna will cover from a specified distance and antenna's half-power beamwidth. [more...]
A.H. Systems, inc.
9710 Cozycroft Ave.
Chatsworth, CA 91311
P: (818) 998-0223
F: (818) 998-6892