| 摘要 |
An integrated active antenna is provided to receive signals of dual frequency band at the same time by parallel connecting an open stub to an ending point of a feeding line of a planar monopole antenna. A dielectric substrate(10) has a first surface and a second surface. The first surface is faced with the second surface. An antenna(20) is formed on the first surface of the dielectric substrate. A first ground surface(30) and a second ground surface(32) are formed in both sides of a feeding line of the antenna. A via hole(40) electrically connects the first surface and the second surface of the dielectric substrate. A first signal output part and a second signal output part are formed on the second surface of the dielectric substrate. The first signal output part amplifies a first signal having a first center frequency among signals provided from the antenna. The second signal output part amplifies a second signal having a second center frequency among signals provided from the antenna. Input terminals of the first signal output part and the second signal output part are connected to the feeding line of the antenna through the via hole.
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