| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverted-F antenna capable of obtaining dual transmission reception frequency bands and widening the transmission reception frequency bands. <P>SOLUTION: The inverted-F antenna 1 capable of transmitting / receiving a signal at the 2 kinds of different transmission reception frequency bands through the first order resonance and the high order resonance, is provided with: a dielectric body 2; and a couple of radiation conductors 3, 4 formed opposite to each other across the dielectric body 2, and the first resonance frequency and the high order resonance frequency are deviated within a range of the transmission reception frequency bands between a couple of the radiation conductors 3, 4 to widen the transmission reception frequency bands by the first resonance frequency and the high order resonance frequency. Further, the radiation conductors 3, 4 are formed to be a loop from a common feeding point 5 located at one end to the other end 10, a gap 11 for realizing a static capacitance is formed between the feeding point 5 and the other end 10 of the loop to lower the high order resonance frequency of the transmission reception frequency bands in order that the inverted-F antenna can be put into practical use for the dual band. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
