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Satellite Antenna Site Diversity Ka-Band in SATCOM

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  • Author: Ünal Isler
The immanent advantage of satellite networks compared to all other networks is that they can address any geographic location at any time and from any desired location with scalable, stationary and even mobile services. Emerging mainly from broadcasting-only satellite networks have emerged to versatile and scalable media and broadband services networks However, higher bands, such as Ka-band, come with challenges when it comes to efficient and reliable transmission. Key for all operators is flawless operation 24/7 to ensure highly reliable services. As one of the pioneers in satellite ground communication DEV Systemtechnik supports matching solutions. Rain fade at Ka-band Ka-band in satellite communications plays an increasing important role today. However, at higher frequencies, electromagnetic wave absorption increases. At Ka-band frequencies this can lead to service interruptions and performance degradations during rain fades. With high atmospheric losses, conventional fade margin approaches such as adaptive-waveform techniques or adaptive-power control techniques are not sufficient for compensation. For reliable and highly available operations, only site diversity configurations on the ground provide an adequate, fail safe solutions
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