摘要:
A portable radio comprising a first case (2) and a second case (3) having any one of a transmitting circuit part, a receiving circuit part, and a radio circuit part, a flexible cable (11) connecting the circuit parts of the first case (2) and the second case (3), an antenna (4) connected electrically with the radio circuit part and installed at an end of the second case (3) remote from the first case (2), a ground plate cable (25) interconnecting the ground plates of the first case (2) and the second case (3), and a variable load (27) inserted in series with the ground plate cable (25), wherein stabilized communication can be ensured by performing phase regulation of the antenna automatically depending on the use conditions of the radio.
摘要:
A portable telephone (1a) comprises a lower case (10) with first end (10a) and s second end (10b), an upper case (20) with first end (20a) rotatably attached to the first case (10) and the second end (20b), and a monopole antenna (30) built in the first end (l0a) of the lower case (10). The second end (20b) of the upper case (20) is rotatable to approach the second end (10b) of the lower case (10) or to separate from the second end (10b) of the lower case (10). The portable telephone (1a) is used close to the user's head (100), with the second end (20b) of the upper case (20) separated from the second end (10b) of the lower case (10). The lower case (10) is arranged with respect to the upper case (20) so that the upper case (20) may interpose between the monopole antenna (30) and the head (100).
摘要:
A cellular phone having an antenna built therein in which the physical size of an antenna element is suitably reduced, the weight is reduced and the shock resistance is satisfied, dimensional dispersion in mass production is suppressed, and a practical service condition of permitting access by hands, etc. is taken into account. A dielectric member (15) between the antenna element (2a) and a ground (6) is a supporting member formed of cycloolefin polymer of shock-resistant plating grade consisting of styrene rubber, polyolefin rubber (elastomer), or both thereof blended with each other, and the antenna element (2a) is constituted by a plating formed on a main surface of the dielectric member (15).
摘要:
An antenna device, a wireless communication terminal, an external antenna and a hand-strap, which can retain a satisfactory communication performance even in a weak electric- field area without being seriously influenced by the surrounding circumstance and which can improve the antenna performance by slightly modifying an already designed existing body wireless communication device. The antenna device is provided, in a casing 1 packaging a wireless communication circuit, with a built-in antenna 2 packaged while being electrically connected with the circuit, and an external antenna 3 externally attached to the casing.