Millimeter wave antenna for generating a beam with a Gaussian distribution.

摘要

The device relates to an antenna for producing a millimeter wave beam having a Gaussian distribution and using a high power source (1). In this antenna, partial mode converters (2) are associated to said source (1) and intended to receive from the source a Tm,n mode which might either be TEm,n or TMm,n, and to deliver a mixture of modes including the mode Tm,n at a relative power rate of 70 to 85% and at relative phase 0, and at least one of the following additional modes, namely Tm,n-1 at a relative power rate of 10 to 20% and at relative phase pi , and TEm,n+1 at a relative power rate of 10 to 20% and at relative phase pi , said mixture being able to be applied to a collimation reflector (3) the concentration point (5) of which constitutes the antenna system outlet. Such an antenna can convert any Tm,n mode into a linearily polarized narrow beam of very high power (about 1 MW) and high frequencies (above 100 GHz)