An antenna system for providing radiation over substantially 360 DEG in azimuth by illuminating a conical reflector with a radiation beam having a frequency distribution with a local minimum which is coincident with the point of the reflector thus avoiding scattering. Preferably the radiation intensity distribution is annular, most preferably being Laguerre-Gaussian in nature.
申请公布号
WO9729525(A1)
申请公布日期
1997.08.14
申请号
WO1997GB00311
申请日期
1997.02.05
申请人
THE SECRETARY OF STATE FOR DEFENCE;ROBERTSON, DUNCAN, ALEXANDER;MAY, PETER, BRIAN