Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 2 of 2 for “"banda s"”.
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Antenas para sistema de comunicação de longa distância de aeronaves remotamente pilotadas
Brazilian Space Launch Centers employ conventional aircraft to monitor large maritime areas destined to the impact point of rockets or parts of them, resulting in a high cost. As a low cost solution for the operation, the remotely piloted aircraft (RPAs) have shown to be efficient for operations of …
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Design of microwave subsystems for radio astronomical receivers
The radio astronomical receivers are devices that they measure the radio emissions coming from celestial sources. Therefore, the aim of these devices is to convert the weak electromagnetic energy from space into a measurable electrical signal. The nature of the signal emitted by celestial sources …