Antenna device, array antenna device using the antenna device, module, module array, and package module

• Main Author: SEKI TOMOHIRO,NISHIKAWA KENJIRO,HONMA NAOKI,TSUNEKAWA KOUICHI
• Format: Patent
• Language: English
• Published: 05.09.2007
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

A small antenna device having an increased gain is provided. The antenna device includes a multilayer dielectric substrate composed of a combination of a plurality of dielectric layers, wherein a feeding antenna is provided in a lower layer of the multilayer substrate, a reflective metal plate is provided above the feeding antenna, and circular or rectangular metal loops are arranged so as to be of increasing diameter from lower layers toward upper layers in the plurality of dielectric layers. There is provided a small-size antenna device having a high gain. The antenna device is formed by a multi-layer dielectric substrate combining a plurality of dielectric layers. A feeding antenna is arranged at the lower layer of the multi-layer substrate. A reflection metal plate is arranged above the feeding antenna. Furthermore, disc-shaped or square loop-shaped metal members are arranged with a diameter increasing from the lower layer toward the upper layer.