| Summary: | 碩士 === 國立臺北科技大學 === 電腦與通訊研究所 === 100 === With the development of mobile communications, multimedia services and applications have gained greater demanding in nowadays. How to raise the system capacity and improve communication quality in the limited bandwidth is a big issue. Application of smart antenna system became an importance study. Smart antenna is divided into two main types. One is Beam-Switch system, another is adaptive antenna array.
A phase array beam switching type architecture is proposed in this thesis. Utilize the active and passive components combined with automatic control system software, a switch beam antenna system can develop more beam directions and improve the beamforming accuracy. Different parameters are setting to control the phase and distance among different antenna elements for evaluating the performance of switching beam antennas system are fully investigated.
Finally, the proposed beam switching antenna system are placed in an indoor simulation tools to evaluate its feasibility of placing phase array system in indoor environment. As the result shown, the receiving signal level can be enhanced by 10~30dBm with properly parameters setting. The proposed phase array system has less complexity than adaptive antenna array system, while providing more capability than traditional switch beam antenna systems.
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