| 摘要 |
PURPOSE:To improve the reception sensitivity of an antenna by arranging the writing direction of a wiring pattern to be arranged near the antenna in the direction orthogonal to the longitudinal direction of the antenna so as to prevent noise emitted from the wiring pattern from jumping into the antenna. CONSTITUTION:In the receiver of a pager, etc., arranging the antenna 6 receiving radio waves near the pattern 3 for a key input part, etc., the wiring pattern 3 is formed as a wiring direction extending in the direction nearly orthogonal to the longitudinal direction of the antenna 6. The wiring pattern 3 extends in the direction nearly orthogonal to the longitudinal direction of the antenna 6. Consequently, even the wiring pattern 3 and the antenna 6 are arrange closely, the magnetic field component of noise emitted from the wiring pattern 3 does not cross the opening face of a loop antenna, e.g. and the direction of the electric field of the wiring pattern 3 and the longitudinal direction of an antenna element are orthogonal so that the antenna 6 does not receive the electric field component of noise. |
