| Summary: | 碩士 === 國立中央大學 === 光機電工程研究所 === 96 === In this work, a unidirectional transmission radio module, which can transfer at least 60 km, is proved by experiments, and the properties and the trend of decay of this module are also proved. The design of this unidirectional transmission radio includes circuits of digital modulation, unidirectional transmission protocol software, software of Human Computer Interaction, test platform of mechanical assembly, and experiment data analysis.
Moreover, in order to improve this unidirectional transmission radio module into more efficient Half-Duplex Transmission, these are several methods are applied in this research, such as, increasing and integrating route switching circuit, and using the route switching circuit protocol software, more powerful power amplifier, and low noise amplifier.
Finally, by using the fitted curve of the unidirectional transmission radio module, the parameters in this module are built. According to these results, the efficient transfer distant of this novel Half-Duplex Transmission with powerful emitting and receiving can be predicted.
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