| 摘要 |
The invention relates to a microwave antenna of the slot-fed type comprising a first plate (1) made of dielectric material, the lower face of which is provided with a microstrip feed line 2 and the upper face with a metal layer (3) entirely covering it with the exception of a slot (4) which, seen from above, is perpendicular to the microstrip line (2), a layer (5) of dielectric material and a second plate (6) of dielectric material, the lower face of which is provided with a metal pellet (7), the said antenna possibly being equipped with a metal layer (10) parallel to the layer (1) and under it. It is note worthy in that the pellet (7) is provided with at least one pair of slots (8 and 9) such that it exhibits two tuning frequencies. <IMAGE> |
