Patent ID: 11862877
Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A board comprising:
a nearly rectangular shaped conductive board;
terminals corresponding to ground terminals of antenna elements so that the antenna elements are attached to sides of the conductive board, respectively; and
terminals corresponding to terminals of feeding wires so that the antenna elements are fed via the feeding wires, respectively, in such a manner that orientations of electric fields in polarization directions of the antenna elements arranged on any two of the sides of the conductive board opposite to each other are substantially same as each other, wherein:
each of the antenna elements comprises the feeding wire, the ground terminal separated from the conductive board and a split-ring conductor of a shape which is a ring but is partially cut by a split portion; and
the feeding wire is electrically connected with the split-ring conductor and extends in a direction which traverses a region formed inside the split-ring conductor.