CIRCUIT BOARD AND CIRCUIT MODULE

摘要

Provided is a circuit board wherein impedance matching between an antenna coil and an electronic component electrically connected with the antenna coil is more correctly made. A circuit module is also provided. A substrate main body (11) has substrate portions (12a, 12b) and is composed of a plurality of laminated insulating material layers (30) which are composed of a flexible material. An antenna coil (L) is composed of a coil conductor (36) provided on the substrate portion (12a). A wiring conductor (32) is provided on the substrate portion (12b) and is electrically connected with the antenna coil (L). The substrate portion (12b) has a configuration which does not easily deform compared with the substrate portion (12a). On the substrate portion (12b), an integrated circuit electrically connected with the wiring conductor (32) is mounted.