Antenna system and assembly method thereof, and base-station array antenna

A base station array antenna, comprising:

• a feeding network circuit board;
• and
• a plurality of antenna systems welded on the feeding network circuit board,
• wherein each of the plurality of antenna systems comprises:
• a radiating sheet provided with at least one first fixing portion that is elastic;
• an insulating bracket comprising a bracket body, and a plurality of mounting portions, at least one second fixing portion and at least one first assembling portion that are provided on the bracket body, wherein the at least one second fixing portion is provided at a top of the bracket body, and the at least one first assembling portion is provided at a bottom of the bracket body;
• and
• a plurality of coupling circuit sheets, wherein each of the plurality of coupling circuit sheets is provided with a coupling circuit at a single side thereof and is fixed in a slide rail of one mounting portion of the plurality of mounting portions in such a manner that a feeding pin located at a bottom of the coupling circuit sheet extends out of the one mounting portion;
• wherein the feeding network circuit board comprises at least one second assembling portion and a feeding network, the at least one first fixing portion and the at least one second fixing portion cooperate with each other in such a manner that the radiating sheet is mounted to the insulating bracket, the at least one second assembling portion and the at least one first assembling portion fixedly cooperate with each other in such a manner that the insulating bracket is mounted to the feeding network circuit board, and the feeding network is electrically connected to the feeding pin to feed a signal.

An assembling method of an antenna system, comprising:

• sliding each of a plurality of coupling circuit sheets along a slide rail into a mounting portion of an insulating bracket, and fastening the coupling circuit sheet to the mounting portion in such a manner that a feeding pin located at a bottom of the coupling circuit sheet extends out of the mounting portion;
• mounting the insulating bracket to a feeding network circuit board by fixed cooperation between a first assembling portion of the feeding network circuit board and a second assembling portion located at a bottom of the insulating bracket;
• welding coupling circuits of the plurality of the coupling circuit sheets and a feeding network of the feeding network circuit board through feeding pins of the plurality of coupling circuit sheets, to feed signals;
• and
• mounting a radiating sheet to the insulating bracket by cooperation between a first fixing portion of the radiating sheet and a second fixing portion arranged at a top of the insulating bracket.