| 摘要 |
PURPOSE:To suppress the output reduction of a high frequency amplifying module and to make this module low-noise and oscillationless. CONSTITUTION:A micro strip line substrate 2 is fixed to the main face of a radiation plate 1, and a metallic conductive case 11 covers the micro strip line substrate 2 and is attached to the radiation plate 1. A ground layer 4 is provided throughout the surface, which is brought into contact with the radiation plate 1, of the micro strip line substrate 2. A resin 12 as a dielectric is charged in the hollow part formed by the micro strip line substrate 2 and the case 11 without spaces. Electromagnetic waves which fly out from the surface of the micro strip line to the space in a conventional device are difficult to fly out because the micro strip line is covered with the resin 12, and the output reduction is prevented, and noise and oscillation are reduced. |
