PATCH ANTENNA DEVICE

摘要

A vehicle-mounted patch antenna device includes a substrate, a ground conductor provided on the substrate, an antenna element section, a stub, and a notification circuit section. The antenna element section is provided on a surface that faces a surface on which the ground conductor of the substrate is provided, and includes a power feeding section and a degeneracy separation element section. The stub is provided on a surface on which the antenna element section of the substrate is provided, and is a microstrip line that uses the ground conductor. The notification circuit section is provided on the substrate, and is connected adjacent to an area in which current distribution is minimum in a peripheral area other than an area in which the power feeding section of the antenna element section is provided.

主权项

1. A patch antenna device mounted on a vehicle, the patch antenna device comprising:
a substrate; a ground conductor provided on the substrate; an antenna element section provided on a surface facing a surface on which the ground conductor of the substrate is provided, the antenna element section including a power feeding section and a degeneracy separation element section; a stub provided on a surface on which the antenna element section of the substrate is provided, and being a microstrip line that uses the ground conductor; and a notification circuit section for notifying a state to an outside, provided on the substrate, and connected, through the stub, adjacent to an area in which current distribution is minimum in a peripheral area other than an area in which the power feeding section of the antenna element section is provided.