基于SAW无线测温系统的PIFA天线设计  

Design of PIFA Antenna for SAW Wireless Temperature Measurement System

作　　者：张晓新 任珂强 林峰 王健 ZHANG Xiaoxin;REN Keqiang;LIN Feng;WANG Jian(College of Electronics and Informal,ion Engineering,Shenyang Aerospace Univershy,Shenyang 110136,China;China Guang Nuclear New Energy IIoldings Co.,Ltd.,Shenyang 110136,China)

机构地区：[1]沈阳航空航天大学电子信息工程学院,辽宁沈阳110136 [2]中国广核新能源控股有限公司,辽宁沈阳110136

出　　处：《压电与声光》2018年第5期653-656,共4页Piezoelectrics & Acoustooptics

基　　金：辽宁省自然科学基金指导计划基金资助项目(201602555)

摘　　要：为实现声表面波(SAW)无线测温系统的最佳接收与传播特性,设计了一种高增益的平面倒F天线(PIFA)。基于倒F天线的原理,通过改变馈点位置和天线的尺寸,实现了在433 MHz附近的陷波特性。仿真显示,天线在427~440 MHz频段内的电压驻波比(VSWR)小于1.5。在433.7 MHz附近输入反射系数S11为-26.6dB,且电压驻波比接近于1,具有良好的增益和匹配特性。该天线不仅结构简单,便于制作,还具有良好方向性和辐射特性。测试结果与仿真结果吻合,符合无线测温系统与SAW传感器的通信要求。In order to achieve the optimum receiving and transmission characteristics of SAW wireless temperature measurement system,aplanar inverted-F antenna（PIFA）with high gain is designed in this paper.Based on the principle of the inverted F antenna,the band notched characteristics near of the 433 MHz has been realized through changing the feed-point position and the size of the antenna.The simulation result shows that the voltage standing wave ratio（VSWR）of the designed antenna in the band of 427-440 MHz is less than 1.5.At the 433.7 MHz,the input reflection coefficient S11 is only-26.6 dB and the VSWR is close to 1,which has good gain and matching characteristics.The antenna not only has a simple structure and is easy to manufacture,but also has good directionality and radiation characteristics.The test results are in good agreement with the simulation results and meet the communication requirements of the wireless temperature measurement system and the SAW sensor.

关 键 词：声表面波温度传感器 倒F天线 平面倒F天线(PIFA) HFSS 电压驻波比(VSWR) 

分 类 号：TN82[电子电信—信息与通信工程]