發明
中華民國
105114371
I 614940
多輸入多輸出天線系統
國防大學
2018/02/11
LTE 第四代行動通訊規格已成為現階段主流的通訊系統,若要完全發揮LTE 高速網路傳輸速率及良好的傳輸品質,則須具有良好隔離度的 MIMO 天線,以增加傳輸品質。本天線系統提出激發轉軸閉槽孔 LTE/WWAN/WLAN MIMO 天線設計,以整合整體機構環境的設計概念,將天線元件配置於上、下金屬板與金屬轉軸所形成之閉槽孔間隙內,並藉由設計天線結構以激發轉軸閉槽孔結構,將轉軸閉槽孔結構整合為天線設計之ㄧ環,達成具有良好輻射效率之縮小化天線。在本天線系統設計中提出一種藉由增加一隔離元件於轉軸閉槽孔中間位置,利用此隔離結構隔開主、副天線於兩不同短閉槽孔,可有效優化 LTE/WWAN/WLAN MIMO 天線系統之隔離度。 本專利之特色是在整合行動通訊裝置之環境,利用筆記型電腦轉軸間的空間配置多天線系統及其隔離元件,可達能全金屬背蓋的實現,且主、副天線均能整合配置天線系統的轉軸閉槽孔結構來幫助輻射而具有良好的輻射效率,而無須另外配置天線的淨空區間;並結合隔離元件的設計使多輸入多輸出操作時,所有頻段須能達優於15dB的良好隔離度表現。 Provided is a multi-input multi-output antenna system, including: a first metal plate and a second metal plate; a first connection part and a second connection part respectively connected between the first metal plate and the second metal plate, such that a long closed slot is formed between the first metal plate and the second metal plate; a first antenna body and a second antenna body respectively disposed in the long closed slot and connected to the second metal plate; a isolation unit disposed between the first antenna body and the second antenna body and connected to the first metal plate and the second metal plate, so as the long closed slot is divided into a first short closed slot and a second short closed slot; wherein slot distances are provided between the first and second antenna bodies and the first metal plate, so that the antenna bodies generate at least a resonant mode on the short closed slots by the slot distances.
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