CAJ | 학술논문

采用软件设计和实验相结合的方法，设计了一款紧凑型、共平面、能覆盖2.4/5.2/5.8 GHz WLAN和2.5/3.5/5.5 GHz WiMAX工作频段的笔记本电脑天线．该天线采用耦合馈电方式，通过调节矩形辐射面和L形结构尺寸以及耦合缝隙的大小来产生2.5 GHz和5.5 GHz的谐振频率；通过在L形辐射表面开一个U形缝隙来实现3.5 GHz处的谐振点，该U形槽的长度大约为4 GHz谐振点处的1/4 l；其整个天线的面积只有7.5 mm ×17.5 mm（不包括笔记本电脑天线的地板）．在设计中通过调节矩形耦合辐射体与L形辐射面的间距可以有效地调节各谐振点的强度，还可以实现天线输入输出的阻抗匹配．当被嵌入在支撑笔记本电脑显示屏地板的顶端时，天线能很好地满足WLAN和WiMAX的所有工作频带并具有良好的辐射特性，经过软件优化和对实物的测试，测试结果和仿真结果吻合良好．
채용연건설계화실험상결합적방법，설계료일관긴주형、공평면、능복개2.4/5.2/5.8 GHz WLAN화2.5/3.5/5.5 GHz WiMAX공작빈단적필기본전뇌천선．해천선채용우합궤전방식，통과조절구형복사면화L형결구척촌이급우합봉극적대소래산생2.5 GHz화5.5 GHz적해진빈솔；통과재L형복사표면개일개U형봉극래실현3.5 GHz처적해진점，해U형조적장도대약위4 GHz해진점처적1/4 l；기정개천선적면적지유7.5 mm ×17.5 mm（불포괄필기본전뇌천선적지판）．재설계중통과조절구형우합복사체여L형복사면적간거가이유효지조절각해진점적강도，환가이실현천선수입수출적조항필배．당피감입재지탱필기본전뇌현시병지판적정단시，천선능흔호지만족WLAN화WiMAX적소유공작빈대병구유량호적복사특성，경과연건우화화대실물적측시，측시결과화방진결과문합량호．
Using simulation and experiment methods , a compact , coplanar , and cover all the operating bands of 2.4/5.2/5.8/GHz WLAN and 2.5/3.5/5.5 GHz WiMAX systems of laptop antenna were de-signed .The antenna adopts coupling feed mode , by adjusting the size of the rectangular radiating surface and L-typed structure, and the dimension of the slot-coupling to arouse the resonant frequency of 2.5GHz and 5.5GHz; through cutting a U-shaped slit in the L-type radiation surface to achieve the resonance point of 3.5GHz, the length of the U-shaped is 1/4λat the resonance point of about 4GHz.The antenna shows an entire area is only 7.5 mm ×17.5 mm ( not including the system ground plane ) .In the proce-dure of design , through changing the gaps between the rectangular and L-shaped radiator can adjust the strength of the resonance point , but also realize the matching of input and output impedance .When mounted at the top edge of the display panel in the laptops , three wide operating bands for covering all the desired operating bands of WLAN/WiMAX systems are obtained and the antenna has a good radiation characteristics .The optimizations by using the simulator software Ansoft HFSS were performed , and an actual model has been prototyped for experimental measurements , the measured and simulated results are in good agreement .