摘要
针对射频识别系统UHF频段的中国标准840-845MHz和920～925MHz，提出一种基于E形天线和共面倒F形天线相结合的设计方案，设计了一款新颖的双频微带天线。通过调整短路针的位置，E形槽的宽度和相对位置实现谐振。仿真和调试表明，该天线谐振在850MHz和920MHz下，带宽（VSWR〈2）可以覆盖以上两个频段。该天线兼备E形天线的多谐振特性和倒F型天线的低后瓣特性。此外，天线结构简单、成本低廉，便于调谐。
A new method based on E - shaped antenna and inverted F antenna is developed in order to meet requirement of 840-845 MHz and 920-925 MHz in China. The novel antenna is designed in this paper. The antenna resonance is realized by adjusting the position of the short - pin,the slot width and relative distance of E - shaped. The results of simulation and test show that this new antenna operates at 850 MHz and 920 MHz. The bandwidth defined by VSWR〈2 can meet the regulation requirements in China. Besides,muti- frequency of E -shaped antenna and lower back lobe of inverted F antenna are embodied by the antenna. Besides,the antenna has simple struct, cheap cost and tuning conveniently.
出处
《现代电子技术》
2009年第10期140-142,共3页
Modern Electronics Technique
关键词
RFID
IFA
微带天线
双频谐振
RFIDlIFAlmicrostrip antenna
dual - frequency resonance
