發明
中華民國
099133803
I 446624
雙寬頻行動通訊裝置
國立中山大學
2014/07/21
一種雙寬頻行動通訊裝置,具有接地面及天線,天線具有第一操作頻帶及第二操作頻帶,第一操作頻帶之頻寬至少為第一操作頻帶之中心頻率之25%,第二操作頻帶之頻寬至少為第二操作頻帶之中心頻率之40%。天線位於介質基板上,天線包含:第一輻射部、第二輻射部及短路輻射部。第一輻射部之ㄧ端為天線之饋入點,第一輻射部產生第二操作頻帶之部份頻寬。第二輻射部具有至少一次彎折,其部分區間與第一輻射部具有一耦合間距,部分區間之長度至少為第一操作頻帶之最低頻率之0.03波長,經由耦合間距,第二輻射部由第一輻射部電容耦合激發,產生第一操作頻帶。短路輻射部之一端電氣連接至第二輻射部,其另一端電氣連接至接地面,且短路輻射部具有一電感元件。 The present invention is related to a dual-wideband mobile communication device which comprises a ground plane and an antenna. The antenna includes a first operating band and a second operating band. The bandwidths of the first and second operating bands are at least 25% and 40%, respectively. The antenna comprises a first radiating portion, a second radiating portion, and a shorted radiating portion. One end of the first radiating portion is a feeding point. The first radiating portion contributes a fractional bandwidth of the second operating band. There is a coupling gap between the second radiating portion and the first radiating portion. The length of the coupling gap is at least 0.03 wavelength of the lowest frequency. The shorted radiating portion has an inductive element. One end of the shorted radiating portion is electrically connected to the second radiating portion, and the other end of the shorted radiating portion is electrically connected to the ground plane.
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