Investigating The Relationship Between Electric Field Intensively, Magnetic Field Strength And Power Density Of base Stations Of Global System mobile
Wireless Telecommunication Technology has experienced a boost in its application over the past years with a corresponding increase in the background radiation from its sources i.e. Electromagnetic Field. Electromagnetic Field (EMF) arises naturally (in thunderstorm and earth core) and also through human activity. The energy from EMF is non-ionizing as it is considered to be too weak to cause ionization. Adverse effects from over exposure to EMF depend on several factors such as the strength of magnetic field and electric field and characteristic of radiofrequency wave, the position and movement of a body in the field e.t.c. In order to gain output power density, the antenna is often directed both horizontally and vertically which therefore radiate straightforward in a sector. Most power is concentrated in the principal direction of transmission with little spread in other direction. This study investigated the relationship that exists between the power density of antenna with their corresponding electric and magnetic field intensity. In order to achieve this, a field survey was carried out on some selected base stations of Global System Mobile (GSM) (Airtel, MTN, Etisalat and Glo) around Ijebu-ode, in Ogun state, South Western Nigeria With the aid of non-ionizing electromagnetic field meter, the electric field intensity and magnetic field intensity of these masts were obtained over the range of far field (10-100m) and near field (50cm-500cm).The result obtained showed that there exists a valid relationship in measured power density and electric field and magnetic field intensity when compared with already existing model with the degree of their fitness R2 ranging from 0.962 to 0.999. A power relationship was developed between electric field/magnetic field intensity and power density.