| 主权项 |
1. A horn antenna comprising
a first plate and a second plate, the first and second plates being arranged at an acute angle to one another, the first and second plates defining a mouth of the horn antenna at the point where they are furthest apart and a throat of the horn antenna opposing the mouth; a first ridge extending from the first plate towards the second plate; a second ridge extending from the second plate towards the first plate, the first and second ridges defining a slit, the slit running from the mouth of the horn antenna towards the throat of the horn antenna; a transmission line coupled to the slit; wherein the sides of a void defined by the first and second plates are open between the mouth of the horn antenna and the point where the transmission line is coupled to the slit. |
