| 摘要 |
PURPOSE:To resonate the titled antenna at two different frequencies by loading a conductor plate having a part in parallel with and overlapped with an irradiation conductor element and allowing a drive section to connect or disconnect the radiation conductor element and the conductor plate. CONSTITUTION:The conductor plate 4 is provided in parallel with the radiation conductor element 2 while part of the plate is being overlapped, and a dielectric rod 5 supporting the conductor plate 4 and moving it vertically is provided. In driving the drive section to move vertically the dielectric rod 5, and then the conductor plate 4 is disconnected or connected from/to the radiation conductor element 2 so as to shorten or prolong the length of the radiation conductor element 2 equivalently. Thus, the patch antenna is resonated at two different frequencies.
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