Two-band microwave lens, its method of manufacture and two-band tracking radar antenna

摘要

Two-band lens illuminated by two sources radiating spherical electromagnetic waves in two sources of distinct frequencies according to two crossed linear polarisations, characterised in that it comprises two nested arrays 2 and 3, each corresponding to one of the two bands and consisting of metal strips 4 and 5 separated by a constant distance, the strips 5 of the second array 3 being orthogonal to those 4 of the first array 2. Use in a two-band antenna for a low-level tracking radar.