| 摘要 |
PROBLEM TO BE SOLVED: To provide a Yagi-Uda antenna assembly in which sharp directivity can be realized with one antenna and impact of jamming wave signal can be reduced. SOLUTION: The Yagi-Uda antenna assembly comprises first through third antenna elements for receiving a radio wave in UHF band, a first phase shifter 8, and a second phase shifter 9. The second or third antenna element is arranged to make a first angleθ1 orθ2 against the first antenna element, and the phase shifters 8 and 9 are provided between the first antenna element and the second or third antenna element. The phase shifters 8 and 9 employ an antenna element set with an antiphase value in any one of a radiator 6, a wave director 7 or a reflector 5 for a jamming wave signal arriving from a direction different from the arriving direction of a desired signal out of the signals being received by the first antenna element, and the second or third antenna element. COPYRIGHT: (C)2006,JPO&NCIPI
|
