| 摘要 |
PURPOSE:To improve gain and to widen bandwidth by combining dielectrics whose dielectric constants are different and using them. CONSTITUTION:In the insulating layer of the title substrate, the linear part of a feeder line and an antenna element part 3a are made of a dielectric 1 whose dielectric constant is comparatively small which is a dielectric whose dielectric constant is near '1' desirably, and the bent part of the feeder line 3b is made of a dielectric 6 whose dielectric constant is comparatively large. The dielectrics 1 and 6 are formed in prescribed shapes beforehand and they are joined to a metallic plate 5 which is a ground conductor by an adhesive agent 4b. Thus, the gain can be increased and the antenna can be made broadband as a whole. |
