| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a chip antenna with a broad band capable of transmitting / receiving a radio wave with a plurality of frequencies for realizing a shortened element length. <P>SOLUTION: The chip antenna comprises: a base 2; a pair of terminal parts 4, 5 provided on the base 2; a gradation part 3 being part of the base 2 and provided on the entire circumference of the base 2; and a spiral conductor 10 provided on a gradation wall face of the gradation part 3 across the length direction of the base 2, and the spiral conductor 10 is formed three-dimensionally to decrease the length so that the chip antenna can be downsized. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
