| 摘要 |
PURPOSE:To decrease the loss in a feeding circuit and to obtain a high reception gain by providing plural antenna elements comprising a travelling waveform linear array antenna on an insulation base having a ground conductor on the lower face and forming the feeding circuit energized to each antenna element with a waveguide. CONSTITUTION:The feeding circuit 3 fed to each antenna elememt 2 is formed by using a waveguide, and since the loss of the waveguide 8 is 0.2dB/m in general, the loss generated in the feeding circuit 3 when the length of the waveguide 8 is 80cm and the loss is reduced remarkably in comparison with a conventional example. A connecting terminal 8a connected to feeding terminals B1-Bn of each antenna element 2 provided to the upper face of the waveguide 8 is inserted to the through-hole drilled to the feeding terminals B1-Bn from the downward direction when the waveguide 8 is mounted to the lower face of the end of a printed board 7. A terminal 8b is an output terminal to a BS converter converting a signal in 12GHz received into a signal in 1MHz handled easily comparatively. Further, each connection terminal 8a is provided at an equal interval. |
