The vertical pattern of microwave radiation around BTS (Base Transceiver Station) antennae in Hashtgerd township

New environmental pollutants interfere with the environment and human life along with technology development.one of these pollutants is electromagnetic field. this study determines the vertical microwave radiation pattern ofdifferent types of base transceiver station (bts) antennae in the hashtgerd city as the capital of savojbolaghcounty, alborz province of iran. the basic data including the geographical location of the bts antennae in the city,brand, operator type, installation and its height was collected from radio communication office, and then themeasurements were carried out according to ieee std 95. 1 by the spectran 4060. the statistical analyses werecarried out by spss16 using kolmogorov smirnov test and multiple regression method. results indicated that inboth operators of irancell and hamrah-e-aval (first operator), the power density rose with an increase in measurementheight or decrease in the vertical distance of broadcaster antenna. with mix model test, a significant statisticalrelationship was observed between measurement height and the average power density in both types of theoperators. with increasing measuring height, power density increased in both operators. the study showed installingantennae in a crowded area needs more care because of higher radiation emission. more rigid surfaces and mobileusers are two important factors in crowded area that can increase wave density and hence raise public microwaveexposure.