| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna coupler of a simple structure which has a low attenuation degree for the radio telephone by forming at least an antenna element on the top surface of the coupler by means of a strip transmission line technique. SOLUTION: The top surface of a printed circuit board 1 includes three printed sections 2, 3 and 4. An aperture 5 forms a slot antenna 7 in a specific frequency range by means of a strip transmission line technique. The antenna 7 is placed almost at the center of the board 1 and in parallel to the narrow side face of the board 1. The sections 3 and 4 are included inside the aperture 5. A dipole antenna 8 is formed in a specific frequency range by means of the strip transmission line technique via both sections 3 and 4 and in parallel to the longitudinal side face of the board 1. A plastic holder which is attached on the top surface of the board 1 stores a portable/car telephone at a prescribed height. |
