Bitte wählen Sie ihr Lieferland und ihre Kundengruppe
Indoor wave-propagation characteristics of a reinforced-concrete building in the 1.2 GHz-band are investigated for possible portable radio telephone use or other indoor radio communication system design. Penetration loss through a window, local median variations and cumulative distributions of received signal levels in a room, and reflection coefficient or equivalent dielectric constant and transmission loss of a wall/floor are discussed. It is noted that wave-propagation losses through the windows are measured in terms of the effective radiation pattern, i.e., as the function of an angle of arrival. The penetrating field decreases almost linearly with the angle of arrival. Also, although the received signal cumulative distributions obtained from the data sampled on the measuring course parallel to the side wall do not show a Rayleigh distribution, those obtained in the whole room and on the course parallel to the window surface do show the Rayleigh distribution.