Antenna structure

摘要

An antenna structure comprising a substrate and an antenna is provided. The substrate comprises an upper surface and an under surface. The antenna comprises a first metal pattern and a second metal pattern. The first metal pattern is disposed on the upper surface. The first metal pattern comprises a feeding portion and a transmission line connected to the feeding portion. The second metal pattern is disposed on the under surface, and comprises a first parasitic grounding arm, a second parasitic grounding arm, a connecting arm, a grounding plane and a grounding strip. The connecting arm has a parasitic slot, and connects the first parasitic grounding arm and the second parasitic grounding arm. The grounding strip connects the connecting arm and the grounding plane.

主权项

1. An antenna structure, comprising:
a substrate, comprising an upper surface and an under surface opposite to the upper surface; and a first antenna, comprising: a first metal pattern disposed on the upper surface and comprising: a feeding portion; and a transmission line connected to the feeding portion; and a second metal pattern disposed on the under surface and electrically coupled to the first metal pattern, wherein the second metal pattern comprises: a first parasitic grounding arm; a second parasitic grounding arm; a connecting arm having a parasitic slot and connecting the first parasitic grounding arm and the second parasitic grounding arm; a grounding plane; and a first grounding strip connecting the connecting arm and the grounding plane; wherein the substrate further comprises a first substrate side, a second substrate side, a third substrate side and a fourth substrate side, the first substrate side is opposite to the third substrate side, the second substrate side is opposite to the fourth substrate side, and the parasitic slot extends towards the first substrate side from a non-metal region and further extended towards the second substrate side.