摘要
针对WLAN应用中多频段的传输要求和已有双频WLAN印刷天线存在的增益较小、带宽偏窄、尺寸偏大、回波损耗较高的问题,提出一种新的双频天线结构,即在传统倒F天线的基础上增加一个与之耦合的倒L枝节,从而得到可以覆盖WLAN频段且占用面积仅为35 mm×10 mm的双频天线。利用HFSS 13.0电磁仿真软件对天线参数进行仿真分析和优化。仿真结果表明,在2.4 GHz和5 GHz频段两个谐振点的S_(11)(回波损耗)分别低至-55.9 dB和-44.8 dB,最高增益分别达2.61 dBi和3.38 dBi,相对带宽分别为9.1%(2.40～2.63 GHz)和25.4%(5.15～6.65 GHz)。采用矢量网络分析仪对天线实物进行了测试,实测结果与仿真结果一致性良好,可以满足WLAN的需要。
To meet the requirements of the multi-band transmission in WLAN applications and solve the problems of existing dual-band WLAN printed antennas such as smaller gain, narrower bandwidth, larger size, and higher return loss, a new dual-band antenna structure was proposed, which was to add an coupled inverted-L branch to the traditional inverted-F antenna to obtain a dual-band antenna covering the WLAN band and occupying an area of only 35 mm×10 mm. The antenna parameters were simulated and optimized by using HFSS 13. 0 electromagnetic simulation software. The simulation results show that the S 11 of the two resonance points in the 2. 4 GHz and 5 GHz bands are as low as-55. 9 dB and-44. 8 dB, the maximum gain is 2. 61 dBi and 3. 38 dBi respectively, and the relative bandwidth is 9. 1%(2. 40-2. 63 GHz) and 25. 4%(5. 15-6. 65 GHz) respectively. Finally, a vector network analyzer was used to test the fabricated antenna. The measured results were in good agreement with the simulation results, so it can meet the needs of WLAN.
作者
严冬
李思伟
胡安沙
向镍锌
王平
YAN Dong;LI Siwei;HU Ansha;XIANG Niexin;WANG Ping(College of Automation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China)
出处
《电子元件与材料》
CAS
CSCD
北大核心
2019年第3期56-61,共6页
Electronic Components And Materials
基金
2017年工业转型升级(中国制造2025)资金项目
关键词
印刷天线
倒F
倒L
双频
WLAN
回波损耗
printed antenna
inverted-F
inverted-L
dual-band
WLAN
return loss
