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研究生:吳旻翰
研究生(外文):Mim-Han Wu
論文名稱:超寬頻梳型漸增式槽口天線於縮距量測場之應用
論文名稱(外文):UWB Comb-Shaped Taper Slot Antennas for Compact Antenna Test Range Application
指導教授:張道治張道治引用關係李金椿
指導教授(外文):Dau-Chyrh ChangChin-Chun Lee
學位類別:碩士
校院名稱:大葉大學
系所名稱:電信工程學系碩士班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:64
中文關鍵詞:時域脈衝天線量測系統縮距反射面天線量測場梳型漸增式槽孔天線
外文關鍵詞:ITDAMScompact antenna test rangecomb-shaped taper slot antenna
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天線量測系統大致上可分為室內近場與遠場量測系統、縮距反射面天線量測系統、室外遠場天線量測系統,一般在天線量測系統中的發射天線皆是由許多窄頻之天線所組成,當需量測寬頻之天線時,即便要使用到許多不同頻段之窄頻天線,對於量測結果將有許多不確定之因素。
在本篇論文當中,將針對縮距反射面天線量測系統分別設計兩種不同頻段之梳型漸增式槽口天線,亦可應用於各種類型之天線量測場,而在設計天線的特性時,也特別針對低頻的部份加以改良,此兩天線之工作頻寬分別為1GHz~10GHz和8GHz~26GHz。除了具有超寬頻之特性外,亦具有對稱之天線場型、低指向性及相位中心對頻率而言變動甚小等優異特性。而兩種不同頻段之天線,亦可完全涵蓋時域脈衝天線量測系統之工作頻段,即可大大改善時域脈衝天線量測系統之工作效能。
而利用梳型漸增式槽口天線作為一商用180公分的衛星直播天線之饋入源,並結合了時域脈衝天線量測系統,此系統可以截取並移除反射面天線之邊緣所產生之繞射場,設計出寬頻縮距反射面天線量測場。為了做寬頻縮距反射面天線量測場之靜態區的量測,使用寬頻梳型漸增式槽口天線來當作發射天線,並將此建構於縮距反射面天線之饋入端,利用自製的X-Y scanner分別在1, 4, 7 和 10GHz量測縮距天線量测場靜態區的場強大小分佈與相位分佈。為了做梳型漸增式槽口天線輻射場型的比較及驗證,將分別於多功能近場量測場與縮距天線量測場做輻射場形的量测。
There are several antenna test ranges. The antenna test ranges are composed of near field range, compact range and far filed range. In the wide band antenna measurement system, different kinds of transmit antennas are required, because the transmitting antennas are almost narrow band. There are several uncertain factors during change the transmitting antennas.
In this paper, there are two different kinds of comb-shaped taper slot wideband transmit antennas are developed. These antennas can be applied to different antenna test ranges. This design goal is improvement at low frequency range. The operating bandwidths of two antennas are from 1GHz to 10GHz and 8GHz to 26GHz respectively. These wideband antennas have symmetrical radiation pattern、low directivity and the phase center has not sensitive. The two wideband transmit antennas can applied to ITDAMS (Impulse Time Domain Antenna Measurement System).
The commercial 180cm DBS(Direct Broadcast Satellite) reflector combined with the designed comb-shaped taper slot antenna are proposed as the feed to design a compact test range. The combination of the reflector antenna and the ITDAMS is used to the CATR(Compact Antenna Test Range). Due to the edge diffraction fields of reflector can be gated out by the ITDAMS. The comb-shaped taper slot antenna is located at the focus of the prime feed reflector .The feed spillover and edge diffraction can be easily gated out. The quiet zone performance of CATR is evaluated and measured at 1, 4, 7, 10GHz. For being comparison and identification of antenna radiation pattern, putting the quantity which do characteristic at the near field range and compact antenna test range respectively.
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博碩士論文暨電子檔案上網授權書.............iii
中文摘要........................iv
英文摘要........................vi
誌謝..........................vii
目錄..........................viii
圖目錄.........................x
表目錄.........................xv

第一章 緒論......................1
1.1前言.....................1
1.2研究動機與目的 ...............1
1.3論文架構...................2
第二章 梳型漸增式槽口天線設計.............3
2.1漸窄式天線之簡介...............3
2.2梳型漸增式槽口天線設計............5
2.3模擬與量測結果................5
第三章 梳型漸增式槽口天線於近場天線量測場之應用與驗
證.......................25
3.1近場天線量測場之簡介............25
3.2梳型漸增式槽口天線於近場天線量測場之應用..26
第四章 梳型漸增式槽口天線於縮距天線量測場之應用....39
4.1縮距天線量測場之簡介............39
4.2縮距天線量測場之靜態區量測.........40
4.3梳型漸增式槽口天線應用於縮距天線量測場之
饋入源與近場量測場之驗證..........42
第五章 結論......................59
參考文獻........................60
附錄..........................64
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