| Summary: | 碩士 === 元智大學 === 電機工程學系 === 98 === In this thesis, we first present a friendly system to collect and analyze antenna radiation energy utilizing 3D measurement in wireless communication, which is quite different from a conventional 2D measurement approach. This system can increase the measuring efficiency, improve measured power gain and maximum gain, and provide the plot of 3D radiation pattern for convenient visualization. A rapid scanning approach is also proposed, which can reduce 80% of time for testing the reception ability of portable devices. The errors are acceptable and within 1% in testing both measured and simulated data. Bluetooth instead of USB used to measure A-GPS radiation is also studied and compared. Experiments show that the interference and instability of conventional test schema can be further reduced.
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