Antenna-device substrate and antenna device

摘要

Provided is an antenna-device substrate which is capable of flexibly adjusting multiple resonance frequencies, and also provided is an antenna device. The antenna-device substrate is provided with a substrate main body (2), a ground plane (GND) on the surface of the substrate main body (2), first to third elements (1 to 5), and a short part (6) connecting the first element (3) and the second element (4). The first element is provided with a feed point (FP) at the base end and extends comprising a first connector (C1) of a first passive element (P1). The second element is connected to the ground plane and is provided with a first antenna element (AT1) at the tip end, and extends comprising a second connector (C2) of a second passive element (P2) and comprising a fourth passive element (P4). The third element extends comprising a third connector (C3) of a third passive element (P3). The first element extends with a gap provided between the first element and each of the second element, the third element, and the ground plane such that a floating capacitance can be generated therebetween.

主权项

1. An antenna-device substrate comprising:
an insulating substrate main body; a ground plane, a first element, a second element, and a third element each of which is in the form of metal foil and has been patterned on the surface of the substrate main body; and a short part connecting a part of the first element and a part of the second element, wherein the first element is provided with a feed point at the base end and extends comprising a first connector of which the intermediate part is connectable to a first passive element, the second element is connected to the ground plane at the base end and is provided with a first antenna element of a dielectric antenna at the tip end, and extends comprising a second connector to which a second passive element is connectable and a fourth passive element connected closer to the ground plane side than the second connector, the third element extends comprising a third connector to which a third passive element is connectable and the base end of the third element is connected closer to the base end side than the first connector of the first element, the short part is connected between the position closer to the base end side than the first connector of the first element and the portion from the second connector to the fourth passive element of the second element, and the first element extends with a gap provided between the first element and each of the second element, the third element, and the ground plane such that a floating capacitance can be generated between the first element and each of the second element, the third element, and the ground plane.