Abstract: An electronic device includes a casing, a substrate, an electronic component, and an elastic member. The substrate is arranged inside the casing. The electronic component is arranged on the substrate. The elastic member includes a recessed portion formed to house the electronic component and a convex portion protruding toward the casing side over an entire circumference of the electronic component and being formed in an outer circumference side from the recess unit. The elastic member is compressed between the casing and the substrate.

Abstract: In a mobile terminal device, an antenna holder for supporting an antenna is mounted on a casing by a holder fitting tightened with the antenna holder. The antenna holder is formed of a non-metal material, and the holder fitting is formed of a non-metal material. A signal-feeding member is supported at the holder fitting, and a signal is supplied via the signal-feeding member to the antenna from a signal-feeding circuit provided on a printed circuit board. Further, the upper outside section of the antenna holder is formed of a non-metal material, and the inside section thereof is formed of a metal material. The holder fitting is formed of a non-metal material, and the signal-feeding member is supported to the holder fitting. Then, the signal is fed to the antenna from the signal-feeding circuit through the signal-feeding member.

Abstract: A antenna of a mobile station is composed of a first antenna section having a helical section and a first contact and a rod-like second antenna section coupled at its one end to the first contact and having a second contact at the other end. When the second antenna section is housed in the casing, the first contact comes to face the internal surface of a feeding terminal with the result that it is capacitive-coupled with a matching circuit. When the second antenna section is pulled out of the casing, the second contact comes in direct contact with the feeding terminal with the result that it is directly connected to the matching circuit. Thereby, the band of resonant frequencies when the antenna is housed in the casing is widened and the antenna gain when the antenna is pulled out of the casing is improved.