| 摘要 |
PROBLEM TO BE SOLVED: To provide a microstrip antenna that can send/receive signals with plural frequency bands and occupies a small installation space. SOLUTION: Since a 1st antenna section 10 is placed over a 2nd antenna section 20, it is not required to separately prepare microstrip antennas in response to frequency bands and the space can be saved. The microstrip antenna is fed through a coaxial cable 5 being a common feeder, thereby the wiring can be simplified. By turning the 1st antenna section 10 around a feeding point F, the frequency characteristics of the 2nd antenna section 10 can be adjusted finely. |
