Departures from Plane-Wave-Like Coupling to a Maverick Missile in the RadiatingNear-Field Region of a Horn Antenna

摘要

The HPM susceptibility testing often requires irradiating test objects at thehighest fluences possible. For aperture antennas, the highest fluences are generally found in the radiating near-field region. For valid effects testing, the energy coupled to the object interior must accurately replicate that which would occur in a true weapon environment (plane-wave illumination). Some believe that valid testing requires object placement at distances from the aperture exceeding 2 D squared/lambda (D=antenna effective diameter). Many also believe testing at farther away than 2 D squared/lambda guarantees plane-wave-like coupling conditions. Neither view is correct. Testing in the reactive field region (