High pressure resistant spiral / sine / log-per antenna with conical profile cavity structure.

摘要

The present invention relates to a cavity (2), a hollow structure for arranging a balloon (5) therein, and a conical structure (7) having a hole therein; An electromagnetic absorber 8 disposed on the wall of the cavity 2 facing the conical structure 7 and a dielectric 9 filling the space between the absorber 8 and the conical structure 7. As a result of modifying the antenna cavity structures as proposed, a uniform foam / elastomer absorber (without high voltage resistance) was used in the cavity of these antennas instead of the high pressure resistant absorbent material 8 (ie, the honeycomb structure). This allowed the antenna 1 to still resist high pressure levels.