一种新型宽频带小型化双频全向天线  

A Novel Broadband Miniature Ominidirectional Antenna with Dual-band

作　　者：杨小龙[1] 张美[1] 徐俊梅[1] 钱志伟[1] 

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2012年第3期46-48,52,共4页Communication Countermeasures

摘　　要：提出了一种新型宽频带的小型化双频全向天线。该天线在倒锥形结构单板子天线的基础上加载短路枝节，以降低天线高度、减小天线尺寸；通过在天线锥体上进行不连续结构的设计，激励出双频模式，以实现双频辐射特性。对提出的天线进行优化设计、实物加工，测试结果表明，该天线工作于3G移动通信的0．824-0．96GHz和1．71-2．5GHz频段，具有良好的阻抗匹配特性，电压驻波比（VSWR）〈1．5；天线增益≥2dBi，且具有良好的水平全向辐射特性，水平面方向图不圆度〈3dB；另外，提出的天线具有较小的尺寸，其直径和高度分别仅为低端工作频率的0，12λ和0．18λ。A novel broadband miniature omidirectional dual-band antenna is presented in this paper. Double short branches are loaded on the inverse taper shaped monopole antenna for reducing antenna height and size. With discontinuous structure designed on the taper, dual band radiation performance is excited. Optimization of the antenna characteristics is carried out by HFSS, while the measurement is implemented to the fabricated an- tenna, and the well results show that the presented antenna operates at 824-960MHz＆1710-2500MHz frequency band of 3G mobile communication with well impedance performance （VSWR 〈 1.5）.The antenna gain is larger than 2dBi at the operationg band with good horizontal omnidirectional radiation （Un-rouiadness 〈 3dB）. The proposed antenna has both small diameter and height of 0.12λ and 0.18 λ respectively.

关 键 词：全向天线 宽频带 小型化 双频 

分 类 号：TN82[电子电信—信息与通信工程]