隨著時代進步，人們對於影像的要求越來越高，為了得到清晰的影像往往會伴隨著龐大的資料需要傳輸，而60GHz的頻段相較於2.4GHz以及5GHz的頻段擁有較快的傳輸速度，雖然會受限於電磁波的基本特性，越高頻的電磁波在空氣中耗損比較大，使得傳播距離相較於低頻率的電磁波來的短，但如果是在房間內點對點的傳輸以及搭配指向性高的天線，上述傳播距離短以及耗損高的缺點就對60GHz的天線影響不大。並且在高指向性的天線中可以利用液晶移相器使得陣列縫隙天線擁有光束偏轉的能力，藉此讓訊號範圍增加。
本篇論文主要討論運作於60GHz的微帶線液晶移相器饋送之陣列縫隙天線，內容討論微帶線的基本電磁場分佈並利用貼片天線來驗證模擬出的微帶線是否能正確激發天線，接著討論簡化過後的微帶線液晶移相器在施加電壓與未施加電壓的狀況下其相位差變化，最後討論將微帶線、微帶線液晶移相器、陣列縫隙天線三者結合後的遠場輻射分佈情形，以及討論液晶移相器調控相鄰縫隙天線單元之間的相位達到光束偏轉的效果。

With new technological advance, people have higher requirements for image quality. In order to get clear images, often a lot of date need to be transmitted. The 60GHz frequency band has a higher data rate than 2.4GHz and 5GHz frequency bands. Due to the basic characteristics of electromagnetic waves, the higher frequency of electromagnetic waves loss is relatively large in the air. It causes a shorter propagation distance compared to low-frequency electromagnetic waves. Assume the antenna is point-to-point transmission and antenna with high directionality, the above-mentioned disadvantages of short propagation distance and high attenuation have little effect on the 60GHz antenna. And in the highly directional antenna, slot antenna array has beam steering capability which can increase signal range by using the liquid crystal shifter.
This thesis mainly discusses the slot antenna array fed by microstrip-line with liquid crystal phase shifter operating at 60GHz. It discusses the basic electromagnetic field distribution of the microstrip-line and uses a patch antenna to verify that simulated microstrip line can correctly excite the antenna. Then discuss the change in phase difference between the simplified microstrip-line with liquid crystal shifter in the condition of the applied voltage and unapplied voltage. Finally, we discuss the far-field radiation distribution after combining microstrip-line, liquid crystal phase shifter and slot antenna array. And discuss the effect that use the liquid crystal shifter to turn the phase between adjacent slot antenna units, then achieve beam steering.

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