Patent ID: 7170449

Claim:
Antenna system for a ground penetrating radar, comprising: two plate-shaped antenna devices which are connected ( 14 ) with each other by adjacent edge structures ( 12 , 13 ) and which during operation are orientated to have a downwards slope from said edge structures ( 12 , 13 ), wherein the two antenna devices respectively comprise at least two orthogonally mounted transmitter antenna elements ( 1 , 2 ) and at least two orthogonally mounted receiver antenna elements ( 3 , 4 ), in which the antenna elements ( 1 – 4 ) in each antenna device consist of monopoles formed by metal surfaces being applied to an electrically insulating plate carrier ( 6 ) that is located on the bottom side of a layer of radar absorbing material ( 7 ), in which the upper surface of the absorbing material ( 7 ) is covered by a metallic ground plane ( 8 ).