| 摘要 |
PROBLEM TO BE SOLVED: To improve the ground state of an on-vehicle antenna.SOLUTION: One end of a folded antenna element 22 is connected with an internal conductor of a coaxial cable 14 through a wiring conductor pattern of a substrate 12. An external conductor 52 of the coaxial cable 14 is connected with a surface/ground conductor pattern of the substrate 12. In the substrate 12, a plate-like capacitor is formed by a front surface/ground conductor pattern, a rear surface/ground conductor pattern, and a dielectric plate sandwiched by these ground conductor patterns. The external conductor 52 of the coaxial cable 14 is electrically connected with one end of a ground connection bracket 20 through the plate-like capacitor. A tip 24 of the ground connection bracket 20 is fixed to a body by a bolt 26 and is electrically connected with the body. |
