An exemplary embodiment of a dual band antenna array includes a folded thin circuit board structure with a thin dielectric layer and a conductor layer pattern formed on a first surface of the dielectric layer, the circuit board structure folded in a plurality of folds to form a pleated structure. The communication control part manages registration information including at least one command for requesting virtual data communication performed hypothetically with the virtually response part registered. The HTML document handling portion is operative to communicate through a proxy server, with a home HTTP server in the intranet or the foreign servers in the wide area network. The resistor housing is made of a thermally conductive material while being provided with air passage holes.