Electromagnetic shielding glass of frequency selective surfaces

A frequency selective surface (FSS) consists of a cluster of thin wires that act as dipole antennas. The cross-section of the reflecting aperture is much wider than that of the wire dipole antenna. Since an FSS provides a similar response to a dipole antenna, its reflection corresponds with the dipole resonant frequency. We have developed FSS Glass, which has star elements on its surface. For 0.5 mm diameter silver wire, the typical peak attenuation of FSS operating at 1.9 GHz is 35 dB or more. Since FSS Glass has a wide reflecting aperture, the window glass provides a reflector panel, like a metal plate. There are noncontact gaps between the frame and the FSS element, but the electromagnetic wave cannot penetrate the window glass. The FSS Glass enables the personal handy phone system (PHS) resources to be utilized efficiently