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標題: | 於LTCC基板實現60GHz可切換極化微帶線平板天線 Design of polarization switching microstrip patch antennas using LTCC for 60GHz |
作者: | Siang-Yu Siao 蕭翔宇 |
指導教授: | 盧信嘉 |
關鍵字: | 微帶線平板天線(microstrip patch antenna),極化切換(polarization switching),低溫共燒陶瓷(low temperature co-fired ceramics,LTCC),V頻段(V band,57-66GHz), microstrip patch antenna,polarization switching,low temperature co-fired ceramics,V band, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | 本論文在研製一60GHz頻段下的可切換極化方向微帶平板天線(microstrip patch antenna),搭配相移器(phase shifter)產生0o、+90o /-90o、180o變化,達成在遠場(far field)中0o、45o、90o及135o四種方向線性極化,希望達到比圓極化更好的接收效果,並減少對另一極化的干擾。
本論文使用Kyocera公司的低溫共燒陶瓷(low temperature co-fired ceramics, LTCC)製程,實現於V頻段中(V band, 57~66GHz)微帶線平板天線,天線以堆疊(stacking)的方式在中間層饋入,在335μm厚基板中利用在輻射天線周圍加上寄生元件增加頻寬,反射係數(return loss)在頻率57~66GHz內小於-10dB。 利用 耦合器饋入微帶天線產生左手與右手圓極化,利用相移器(phase shifter)所產生的相位( )合成0o、45o、90o及135o四種方向線性極化。 天線面積為 μm3,中心頻率點增益約8dB,天線實現在低溫共燒陶瓷封裝技術上,論文包括設計過程、模擬結果、輻射場型(radiation pattern)測及反射係數(reflection coefficient)量測。 This thesis developed a V band microstrip patch antenna that can switch polarization direction. With a phase shifter that can generate 0o, 90o, -90o and 180o phase shifts, this antenna can achieve four linear polarizations at 0o, 45o, 90o and 135o directions in the far field. This can achieve better linear reception than the circular polarization and reduce interference to the other polarization. In this thesis, we use Kyocera LTCC process to realize the microstrip patch antenna with feed line in the middle layer, and increase the bandwidth by parasitic elements. A coupler connected with a two port microstrip patch antenna can generate left and right circular polarization, and four directions (0o, 45o, 90o, 135o) of linear polarization are synthesized by 0o, 90o, -90o and 180o phases. The antenna size is μm3 and measured realized gain is about 8dB. The design process, measured simulation results, radiation patterns and reflection coefficient are all presented in this thesis. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61209 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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