Antenna device having enhanced reception sensitivity in wide bands,申请号US20060361529-传众专利搜索

Antenna device having enhanced reception sensitivity in wide bands

申请公布号：US2006139226(A1)

申请号：US20060361529

申请日期：2006.02.24

申请公布日期：2006.06.29

申请人：

ALPS ELECTRIC CO., LTD.

发明人：SHIGIHARA MAKOTO

分类号：H01Q7/08

主分类号：H01Q7/08

摘要：An antenna device includes a prism-shaped or plate-shaped base member made of a dielectric or magnetic material, band-shaped first and second radiation conductors wound around the base member and connected to each other, and a third radiation conductor wound around the base member and connected to the second radiation conductor. The first and second radiation conductors include a plurality of divided portions, and the divided first radiation conductor portions are connected in series by first variable capacitance elements, the divided second radiation conductor portions are connected in series by second variable capacitance elements, and a node between the first and second radiation conductors is used as a feeding end.