Patent ID: 11860296
Assignee: nan
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A radar arrangement, comprising:
a printed circuit board;
at least one electronic component; and
at least one antenna;
wherein the electronic component is arranged on the printed circuit board and is used at least to generate a high-frequency signal, having at least one line structure, being part of the printed circuit board, for guiding the high-frequency signal from the electronic component into the region of the antenna;
wherein the line structure radiates the high-frequency signal at an open-ended radiation region and impinges the antenna with the radiated high-frequency signal;
wherein the printed circuit board has at least four electrically conductive layers which run essentially parallel to one another and are separated from one another by at least three electrically insulating layers, so that the first outer layer and the second outer layer are formed by at least two electrically conductive layers of the at least four electrically conductive layers, and the remaining at least two electrically conductive layers form electrically conductive inner layers of the printed circuit board;
wherein the first electrically conductive inner layer is adjacent to the first electrically conductive outer layer and the second electrically conductive inner layer is adjacent to the second electrically conductive outer layer, and the at least three electrically insulating layers all form electrically insulating inner layers of the printed circuit board;
wherein the electronic component is arranged on the first electrically conductive outer layer of the printed circuit board;
wherein the antenna is formed at least partially in the second outer layer of the printed circuit board;
wherein the high-frequency signal generated by the electronic component is transmitted to the antenna, which is formed at least partially in the second electrically conductive outer layer of the printed circuit board, through the region of the electrically conductive inner layers and electrically insulating inner layers of the printed circuit board; and
wherein by means of a plurality of electrical through-connections between the four electrically conductive layers, a grid-like electromagnetic shielding is implemented around the radiation region of the line structure for guiding the high-frequency signal, around a fine aperture for the defined passage of the electromagnetic radiation radiated by the radiation region of the line structure and around the antenna in the second electrically conductive outer layer and around a coarse aperture implemented in the second electrically conductive inner layer, so that the resulting structure of grid-like electromagnetic shielding, the radiation region of the line structure, the fine aperture, and the antenna in the second electrically conductive outer layer form a unit cell.