Patent ID: 11936123
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A sub-array antenna, comprising:
a substrate; and
a plurality of antenna elements having a flat plate shape, wherein
the substrate has
a first surface,
a second surface facing the first surface, and
an end surface connecting the first surface and the second surface,
the plurality of antenna elements are aligned and arranged along the first surface at equal intervals on the first surface or in a layer between the first surface and the second surface, and
under a condition a distance between respective centers of two of the antenna elements adjacent to each other is P,
a distance between a center of an outer antenna element, which is one of the plurality of antenna elements and is arranged at a position adjacent to the end surface, and the end surface is equal to or greater than 2/9 of P and equal to or less than half of P, wherein
the substrate further includes:
a around terminal arranged on the second surface, and
a ground electrode and a via formed between the layer, in which the plurality of antenna elements are arranged, and the second surface, the ground electrode is connected to the ground terminal, and

at least a part of the ground electrode and the via is arranged in an outer region, the outer region being a region between the outer antenna element and the end surface.