Satellite Communications Antenna Concepts and Engineering
The most critical component of a communication satellite is its antenna system. The purpose of this chapter is to show how the antenna works by describing the basic concepts related to satellite antenna pattern, side lobe, gain, and polarization so that satellite antenna systems are designed and engineered to meet specific requirements. First, the fundamental parameters such as antenna pattern, beamwidth, radiation power, gain, and polarization are introduced. Second, basic antenna such as linear wire antenna, horn antenna, reflector antenna, and microstrip antenna is described. Third, array antenna for scanning and hopping beams is described for its function, gain, and phased array. In the fourth, multibeam antenna is described in terms of its function and type. Finally, an antenna for optical communications system is introduced briefly.
KeywordsAntenna gain Antenna pattern Array antenna Cassegrain antenna Circular polarization Effective area Half-power beamwidth Helical antenna Horn antenna Linear polarization Main beam Microstrip antenna Multibeam antenna Parabolic antenna Phased array antenna Polarization Reflector antenna Side lobe
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