The exemplary embodiment of the present invention provides a kind of improvement Medium Wave Guides for being known as electric fiber.The representative interference for causing signal between other radio paths of bandwidth limitations and adjacent electric fiber can be isolated in electric fiber with metallic cover, in order to which smaller launch loss and the guiding of better signal can reduce whole transceiver power loss in transmission range increase.Also, the electricity fiber has frequency independence attenuation characteristic, in view of electric fiber and interconnection means is vertical coupled, with seldom or even without any additional receiver-side compensation can be achieved with high data rate transfers.