應用於無線通訊之天線設計、量測技術發展與系統建立

Developments of Antennas and measurement techniques for the Applications in wireless communications

盧昀辰(Yun-Chen Lu)

指導教授 ： 周錫增

元智大學/工程學院/通訊工程學系/碩士(2004年)

摘要

天線輻射波形在吸波體的品質過差的無反射室中量測時，會引入由外部屏蔽金屬牆及內部結構所產生之多路徑效應而影響量測之結果，本論文探討使用混合訊號處理的方法來降低此多路徑的效應並增加量測之準確度，包括時閘法、矩陣束法及多重訊號解析法，文中以實際量測之資料分析各種方法之特性及參數探討。

關鍵字

時閘法 ； 矩陣束法 ； 多重訊號解析法 ； 平面偶極天線 ； 無反射室 ； 天線量測

並列摘要

Antenna measurement inside an anechoic chamber with a limited space generally suffers from multipath interferences due to the scattering from the shielding walls and internal structures if the quality of the absorbers is not very well. This paper develops a hybrid scheme that integrates concepts of signal process techniques including time gating, matrix pencil and multiple signal classification methods to reduce the multipath effects and improve the measurement accuracy. Characteristic comparison between individual method as well as the hybrid scheme will be performed based on experimental examinations.

並列關鍵字

time-gating ； Matrix Pencil ； MUSIC ； printed dipole ； anechoic chamber ； antenna measurement

參考文獻

[1] IEEE Std. 149-1979, Test Procedures for Antennas, 1979

[2] Mensa, D, L., High Resolution Radar Imaging, Artech House, 1981

[6] R. Johnson, Antenna Engineering Handbook, McGraw-Hill, 3rd edition, 1993

[9] James J. R., Handbook of Microstrip Antennas, IEE Publishing, 1989

[10] K. C. Gupta, Microstrip lines and slotlines, Artech House, 1996