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In this paper, a new design for microstrip antenna element with U-shaped rectangular patch for sectored coverage of base station antennas of 900 MHz system is proposed for improving antenna performance in terms of gain and bandwidth. A superstrate or dielectric cover is used to protect the patch against environmental hazard. We have present also another(More)
Daily exposure to GSM electromagnetic fields has raised public concern of possible adverse health effects to people living in the vicinty of base station antennas. International guidelines and standards established for limiting human exposure to electromagnetic fields are given in two categories: Basic restrictions (SAR, induced current density, and induced(More)
Daily exposure to GSM electromagnetic fields has raised public concern of possible adverse health effects to people living in the vicinty of base station antennas. In this paper are presented measurements of field strength and power flux density performed on locations few meters away from base station antenna, in different levels, with and without usage of(More)
Exposure to radio frequency electromagnetic fields has raised scientific and public concern regarding possible adverse effects to people exposed to such radiation. At cellular mobile communication frequencies, the most important parameter used to assess human exposure to electromagnetic fields is SAR (Specific Absorption Rate). This paper will firstly(More)
In this paper we have propose wide beamwidth and matched microstrip antenna element with U-shaped rectangular patch for sectored coverage of base station antennas of 900 MHz system. A superstrate or dielectric cover is used to protect the patch against environmental hazard or if a naturally occurring dielectric such as ice is formed on top of the cover, the(More)
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