| Summary: | 碩士 === 國立交通大學 === 電信研究所 === 85 === Ku波段單脈衝式天線追蹤器之研製 本論文
旨在研製 ku 波段 12 GHz 單脈衝式天線追蹤器的四象限比較器. 他是
由四個微波條帶式耦合器所組成.可產生的加成,高低誤差,方位誤差信號
達到對目標追蹤之目的. 此研製利用 ku-Band 波導管陣列天線,天線
的元素距離約1.6倍波長,經過 比較器運算得到了加成與誤差訊號.其半
功率波束寬度為18度,其旁波瓣小於 -12.8dB,零位深度小於-13.4dB.量
測結果與預測相吻合.
The Fabrication of Ku-Band Monopulse
Antenna Tracker In this thesis,the four-quadrant
monopulse antenna tracker for ku- Band is design. The tracker
consists of four feeds and comparator. The feeder forms an
array separated by 1.6 wavelength in E-plane and 1.6
wavelength in H-plane. The comparator consists of four
micorstrip branch -line couplers. Using this comparator , we
can get the signals of sum , elevation and azimuth which
enable the purpose of object tracking. The far field
pattern of this antenna array has half power beamwidth about
18, sidelobe below -12.8 dB,and null -13dB ; those are good
agree- ment with theoretical predictions.
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