| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface-mounted antenna which is small and lightweight, suppresses the variations in center frequency even if print slippage of an electrode pattern occurs, and reduces time and effort for frequency adjustment. SOLUTION: The surface-mounted antenna 9 has a substrate 1 consisting of a dielectric or a magnetic material, a radiation electrode 2 formed on at least one surface of the substrate 1, a grounding electrode 3 directly connected to one end of the electrode 2 and formed on the substrate 1, and a feeder electrode 4 opposing the electrode 2 with an interval. In this antenna, at least one sides 22a-22h of the electrode 2 and ridge lines 10a-10h of the substrate 1 forms gaps (d), and a ratio d/W of each gap (d) to the width W of the substrate is 0.05-0.2. COPYRIGHT: (C)2004,JPO
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