ANTENNA DEVICE
PROBLEM TO BE SOLVED: To provide an antenna device which can perform fine adjustment electronically in the transmission and reception direction of radio waves and can reduce manufacturing cost.SOLUTION: An array antenna 11 is formed by arranging a plurality of element antennas 11a on a plane. Rough...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an antenna device which can perform fine adjustment electronically in the transmission and reception direction of radio waves and can reduce manufacturing cost.SOLUTION: An array antenna 11 is formed by arranging a plurality of element antennas 11a on a plane. Rough adjustment means 12 is provided so as to be able to rotate the array antenna 11 in the elevation angle direction and the azimuth direction, thus controlling the direction of the array antenna 11. Fine adjustment means 13a is provided so as to be able to control the transmission and reception direction of radio waves, by generating a phase difference between respective element antennas 11a. The fine adjustment means 13a has a phase shifter 25 for adjusting the phase of transmission and reception signals for respective element antennas 11a.
【課題】電波の送受信方向の微調整を電子的に行うことができ、製造コストを低減することができるアンテナ装置を提供する。【解決手段】アレイアンテナ11が、面上に複数の素子アンテナ11aを並べて形成されている。粗調整手段12が、アレイアンテナ11の方向を制御するよう、アレイアンテナ11を仰角方向および方位角方向に回転可能に設けられている。微調整手段13aが、各素子アンテナ11aの間に位相差を発生させて電波の送受信方向を制御可能に設けられている。微調整手段13aは、各素子アンテナ11aごとに、送受信信号の位相を調整するための移相器25を有している。【選択図】図1 |
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