Simulation Analysis of Antenna Sensor for Environmental Change Monitoring
[Purposes]In order to accurately detect environmental changes within solid materials,a com-pletely open antenna sensor embedded in the material being measured is designed,and on this basis,it designs and simulates a sensor that can monitor changes in various elements in the environment.[Meth-ods]The finite element method is used to calculate the input impedance of antennas,and the sensitivity equation required by the sensor is derived through modeling and simulated.Adjust the distance and height of the cylinder next to the antenna to simulate real environmental changes and verify the sensitiv-ity of the antenna sensor in monitoring the surrounding environment.[Findings]When the cylinder is continuously moved within the range of 0～50 mm from the antenna and the height of the cylinder is changed at the same time,the higher the height of the cylinder,the smaller the resonance,the greater the magnetic field E,the greater the reflection coefficient in the frequency range.[Conclusions]After simulation can be that the antenna can measure changes of 0～50 mm in the nearby environment.When the cylinder is closer to the antenna position and the height is higher,the sensitivity value obtained is greater.When the sensitivity value is greater,it indicates the more accurate it is to monitor changes in the environment.
antenna sensorfinite element methodsensitivityinput impedance
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