| 摘要: |
| 目前，同时适用于蓝牙、射频识别、全球微波无线互联网和无线局域网这几大主流物联网通信技术标准的多频天线设计较少，为此，提出了一种新的小型化宽频带多频微带天线。该微带天线主要由一个矩形环、一个开口六边形环、三条矩形带以及缺陷地组成，可同时工作在蓝牙、射频识别、全球微波无线互联网和无线局域网的通信频段上。天线谐振频率分别为2.47 GHz、3.48 GHz和5.55 GHz，相应带宽为0.11 GHz(2.38～2.49 GHz)、0.86 GHz(3.19～4.05 GHz)和1.11 GHz(4.95～6. 06 GHz)，增益最高达到5.75 dBi。实测结果显示，该天线在工作频段具有很好的辐射特性和增益，适用于当前应用的无线通信系统。 |
| 关键词: 无线通信系统 微带天线 宽频带 多频段 缺陷地 |
| DOI： |
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| 基金项目:重庆市教委科研项目（KJ1401029）;重庆三峡学院科研基金项目（14RC10） |
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| Design of a novel broadband multi-frequency microstrip antenna |
| PAN Yong,XIONG Jiang,LI Pan |
| () |
| Abstract: |
| For the fact that there are few designs of multi-frequency antenna suitable for Bluetooth,radio frequency identification(RFID),WiMAX and wireless local area network(WLAN) application simultaneously,a new miniaturized broadband multi-frequency monopole microstrip antenna is proposed. The proposed antenna mainly consists of a rectangular ring,a hexagonal ring with a gap,three rectangular strips and a defected ground plane(DGP). The proposed antenna can excite three separate impedance bandwidths to cover all the 2.4/5.2/5.8 GHz Bluetooth/WLAN/RFID operating bands and the 2.5/3.5/5.5 GHz WiMAX bands. It provides three impedance bandwidths of 0.11 GHz,0.86 GHz and 1.11 GHz for the working bands of 2.38～2.49 GHz centered at 2.47 GHz,3.19～4.05 GHz centered at 3.48 GHz and 4.95～6. 06 GHz centered at 5.55 GHz,respectively. Furthermore,the 5.75 dBi of relative high gain is achieved. A prototype is experimentally tested,and the measured results show its good radiation patterns and enough gains across the operation bands. It can be applied in present wireless communication system. |
| Key words: wireless communication system microstrip antenna broadband multi-frequency defected ground plane |
