| 摘要 |
The invention discloses an antenna ( 100, 100', 400, 500 ) comprising walls in a conducting material: first ( 110, 410, 510 ) and second ( 120, 420, 520 ) main walls, a first end wall ( 130, 530 ) and a first and a second side wall. The first ( 110, 510 ) and second ( 120, 520 ) main walls extend in parallel to each other, and are joined by the first end wall ( 130, 530 ). The side walls also join the first and second main walls, so that a cavity with only one opening ( 105, 205, 505 ) is formed, a rectangular aperture which can be brought to radiate by a feed connection ( 207 ). Suitably, the antenna can also comprise a second end wall ( 140, 540 ) which extends from the second main wall ( 120 ) towards the first main wall ( 110 ), with the length of extension of the first main wall being such that the second end wall and the first main wall do not meet.
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