Patent ID: 9203145
Filing Date: 2015-12-01
Classification: H01Q

Abstract:
1. An antenna-device substrate comprising: an insulating substrate main body; and a first element, a second element, a third element, a ground plane, and a ground connection pattern each of which is in the form of metal foil and has been patterned on the substrate main body, wherein the first element is provided with a feed point at the base end and extends while having a power feeding-side passive element, a first connecting portion to which a first passive element is connectable, and an antenna element of a dielectric antenna in this order at the intermediate portion, the second element extends such that the base end thereof is connected via a second connecting portion to which a second passive element is connectable between the power feeding-side passive element and the first connecting portion of the first element, the third element extends such that the base end thereof is connected via a third connecting portion to which a third passive element is connectable between the power feeding-side passive element and the first connecting portion of the first element, the ground connection pattern is connected to the ground plane and is connected closer to the base end side than the connecting portion between the second element and the third element of the first element via a ground-side passive element, 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 stray capacitance is capable of being generated between the first element and each of the second element, the third element, and the ground plane, and at least one of the first element, the second element, and the third element is patterned from the surface to the rear surface of the substrate main body via a through-hole.