Mobile Phone Of Specific Absorption Rate About Capability Verification Technology Research

With the rapid development of mobile communication technology,the mobile phone as the representative of wireless communication products have become indispensable tools for daily life.Today,viewed from the wireless terminal system.At present,from the wireless standard point of view,from 3G to 4G evolving LTE technology and the rapid development of Wi MAX technology is also gradually expanding the market area.A large number of new wireless terminals continue to increase the number.People in their daily lives by the electromagnetic radiation is also increased,therefore,the resulting radiation will not cause harm to human organ function also continues to cause people's attention.SAR testing as an internationally recognized wireless terminal product testing,used to measure the size of the body radiation.This means of testing is also in the continuous development of the emergence of a variety of new wireless terminal testing needs to be addressed and gradually improved.In this paper,combined with the present situation of the industry developm ent,mainly studied the specific absorption rate of mobile phone.The paper focuses on three parts,The first part is calibrated by experimenting with the main components of the experimental absorbance test system.As the SAR measurement of mobile phone electromagnetic radiation for the near field radiation,the measured electric field probe size is very small,at the same time,its isotropic,sensitivity,linearity and other indicators are demanding,in order to ensure the accuracy of measurement,the use of test systems need to be calibrated before.This part uses several standard rectangular waveguides of different frequencies to calibrate and calibrate the experimental setup.The second part,design and use of the dipole antenna on the test system for a system check and verify.System checking is a repetitive check that is used to confirm that the system is working properly during a conformance measurement that detects short-term drift and system uncertainties in order to verify that the system is operating within its specification.At the end of this paper,the test capability of the system is analyzed by the test experiment of stable samples.