| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack that can reduce a space for wiring a high frequency transmission line path in a portable terminal or the like.SOLUTION: In a battery pack 1, a part of a transmission line path 5 for transmitting a signal between an electronic circuit board 2 of a portable terminal 10 and an antenna 3 is disposed in a protection circuit board 4 contained in the battery pack 1. The protection circuit board 4 is a multilayer board. A wiring layer of the transmission line path 5 is electrically separated from the protection circuit board wiring layer by the ground and superimposedly provided. The protection circuit board 4 has a matching circuit for matching signals transmitted through the contact point 22 for electrically connecting the antenna 3 and the wiring layer of the transmission line path 5 and the wiring layer of the transmission line path 5.SELECTED DRAWING: Figure 1 |
