基于耦合倒L加载法的WLAN双频印刷天线的设计
|
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.
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.
引文
[1]Moosazadeh M,Kharkovsky S.Compact and small planar monopole antenna with symmetrical L- and U-shaped slots for WLAN/WiMAX applications[J].IEEE Antennas & Wireless Propagation Letters,2014,13(4):388-391.
[2]Kalraiya S,Singh H S,Meshram M K,et al.Microstripline-fed dual band printed monopole antenna for WLAN/WiMAX/HIPERLAN applications[C]// Region 10 Symposium.New York:IEEE,2014:224-227.
[3]Liu H W,Yang C F.Miniature PIFA without empty space for 2.4 GHz ISM band applications[J].Electronics Letters,2010,46(2):113-115.
[4]贾宇,刘建霞,蔡冬梅,等.应用于WLAN/WiMAX的双1型双频微带天线设计[J].电子元件与材料,2014,33(12):52-56.
[5]Deng C,Li L,Gong Q,et al.Planar printed monopole antennas for ultra-wideband/multi-band wireless systems[C]// IEEE International Symposium on Microwave,Antenna,Propagation,and Emc Technologies for Wireless Communications.New York:IEEE,2012:1-4.
[6]严冬,程亚军,汪朋,等.基于结构合成法的微型化双频WLAN印刷天线设计[J].仪器仪表学报,2016,37(6):1421-1432.
[7]Deng C,Li Y,Zhang Z,et al.Dual-band circularly polarized rotated patch antenna with a parasitic circular patch loading[J].IEEE Antennas & Wireless Propagation Letters,2013,12(2):492-495.
[8]汤雪彬.应用于WLAN/WiMAX的CPW馈电双频天线设计[J].电子元件与材料,2016,35(8):65-68.
[9]邵俊欢,王新彦,高玉恒,等.一种应用于WLAN/WiMAX的双频微带天线[J].电子元件与材料,2015,34(4):51-54.
[10]周超,曹海林,杨力生.一种改进的共面波导馈电超宽带天线设计[J].重庆邮电大学学报(自然科学版),2008,20(1):39-41.
[11]Tarbouch M,Amri A E,Terchoune H.Compact CPW-fed microstrip octagonal patch antenna with H slot for WLAN and WIMAX applications[C]//International Conference on Wireless Technologies,Embedded and Intelligent Systems.New York:IEEE,2017.
[12]宋杰,于映,王寅豪.一种应用于WLAN的单层宽频微带天线设计[J].电子元件与材料,2016,35(6):82-84.
[13]Chen Z N,See T S P,Qing X.Smallprinted ultrawideband antenna with reduced ground plane effect[J].IEEE Transactions on Antennas & Propagation,2007,55(2):383-388.
[14]龚龙艳,张阳,赵广雷.一种用于WLAN/WiMAX的宽带双频天线[J].现代电子技术,2015,38(21):80-82.
[15]常舒,李迎松,杨晓冬.一种应用于WLAN/WiMAX的双频天线[J].应用科技,2011,38(6):20-24.
[16]郭蓉,曹祥玉,袁子东,等.一种新型宽带定向性贴片天线设计[J].物理学报,2014,63(24):192-197.
[2]Kalraiya S,Singh H S,Meshram M K,et al.Microstripline-fed dual band printed monopole antenna for WLAN/WiMAX/HIPERLAN applications[C]// Region 10 Symposium.New York:IEEE,2014:224-227.
[3]Liu H W,Yang C F.Miniature PIFA without empty space for 2.4 GHz ISM band applications[J].Electronics Letters,2010,46(2):113-115.
[4]贾宇,刘建霞,蔡冬梅,等.应用于WLAN/WiMAX的双1型双频微带天线设计[J].电子元件与材料,2014,33(12):52-56.
[5]Deng C,Li L,Gong Q,et al.Planar printed monopole antennas for ultra-wideband/multi-band wireless systems[C]// IEEE International Symposium on Microwave,Antenna,Propagation,and Emc Technologies for Wireless Communications.New York:IEEE,2012:1-4.
[6]严冬,程亚军,汪朋,等.基于结构合成法的微型化双频WLAN印刷天线设计[J].仪器仪表学报,2016,37(6):1421-1432.
[7]Deng C,Li Y,Zhang Z,et al.Dual-band circularly polarized rotated patch antenna with a parasitic circular patch loading[J].IEEE Antennas & Wireless Propagation Letters,2013,12(2):492-495.
[8]汤雪彬.应用于WLAN/WiMAX的CPW馈电双频天线设计[J].电子元件与材料,2016,35(8):65-68.
[9]邵俊欢,王新彦,高玉恒,等.一种应用于WLAN/WiMAX的双频微带天线[J].电子元件与材料,2015,34(4):51-54.
[10]周超,曹海林,杨力生.一种改进的共面波导馈电超宽带天线设计[J].重庆邮电大学学报(自然科学版),2008,20(1):39-41.
[11]Tarbouch M,Amri A E,Terchoune H.Compact CPW-fed microstrip octagonal patch antenna with H slot for WLAN and WIMAX applications[C]//International Conference on Wireless Technologies,Embedded and Intelligent Systems.New York:IEEE,2017.
[12]宋杰,于映,王寅豪.一种应用于WLAN的单层宽频微带天线设计[J].电子元件与材料,2016,35(6):82-84.
[13]Chen Z N,See T S P,Qing X.Smallprinted ultrawideband antenna with reduced ground plane effect[J].IEEE Transactions on Antennas & Propagation,2007,55(2):383-388.
[14]龚龙艳,张阳,赵广雷.一种用于WLAN/WiMAX的宽带双频天线[J].现代电子技术,2015,38(21):80-82.
[15]常舒,李迎松,杨晓冬.一种应用于WLAN/WiMAX的双频天线[J].应用科技,2011,38(6):20-24.
[16]郭蓉,曹祥玉,袁子东,等.一种新型宽带定向性贴片天线设计[J].物理学报,2014,63(24):192-197.