| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a substrate for an antenna device that can flexibly adjust each resonance frequency made to doubly resonate, can be miniaturized, and can be thinned, and the antenna device. <P>SOLUTION: This antenna device includes a substrate body, first to fourth elements EL1 to EL4 each patterned on the substrate body by metal foil, and a ground surface GND. The first element EL1 has a feeding point FP provided at the base end thereof and extends while having an antenna element AT, the second element EL2 extends with the base end thereof connected to the first element, the third element extends with the feeding point connected to the base end thereof, the fourth element extends with the base end thereof connected to the third element, and each element from the first element to the fourth element extends with intervals kept from the adjoining element and the ground surface so as to be able to generate floating capacitance between the elements adjacent to each other and floating capacitance between the element and the ground surface. <P>COPYRIGHT: (C)2013,JPO&INPIT |
