PORTABLE WIRELESS DEVICE

A mobile radio apparatus improves the flexibility of the layout design of an antenna and a radio circuit by arranging the antenna and the radio circuit for supplying power to the antenna in separate housings and realizes a smaller apparatus size. In this apparatus, a first housing (110) that accommodates an antenna element (114), antenna power feeding section (116) and a first circuit substrate (118) and a second housing (150) that has a second circuit substrate (152) on which a radio circuit section (154) is mounted, are coupled to be rotatable around a hollow rotation axis part (130). A group of a plurality of thin linear coaxial wires (170) that electrically connects the first circuit substrate (118) and the second circuit substrate (152) is inserted through the rotation axis part (130). At least one of thin linear coaxial wires (172) of thin linear coaxial wire group (170) is used as a power feeding line that electrically connects an antenna power feeding section (116) and a radio circuit (152).