| Summary: | 碩士 === 元智大學 === 通訊工程學系 === 98 === For guarantee personal health and security and meet requirements for the Electromagnetic Compatibility, The most countries of government have taken measures to restrain the products when they sell to the market. Because of the radio of spectrum is limited, radio apparatus are required the general quality, security are considered, and confirmed the sharing that can be harmonious and effective to its frequency. The purpose of this thesis is aimed at Multi-Function Antenna System of low power radio measurement and analysis to comply with national regulatory before launch to the market, to obtain higher product reliability. In this thesis, multi-functional active antenna system equipment prior to listing the EMC and low-power radio frequency electrical verification testing and analysis, discuss the function of active antenna system, the analysis of signal detection, signal detection and logic to check test, Throughput functional testing, functional testing of Radiated Susceptibility , multi-functional active antenna system energy detection system, including switch antenna coupling circuit, RF switch and analog to digital circuits, so that products have a higher reliability. Multi-antenna active antenna system, in order to enhance signal strength in wireless communications, circuits and logic to determine, achieve the purpose of automatic detection of user location, to improve the transmission rate and increase its transmission range with the antenna array will be effective antenna pointing signal strong side, while the design is also easy for 2.4GHz wireless LAN integration products.
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