Research On Flexible Antenna Based On Nanometer Material

Smart wearable devices have become another hot spot in smart terminals market after smart phones.People are no longer satisfied with the ability of wearable devices to miniaturize personal computers,but instead pursue the portability and comfort that they wear.In order to realize the portability and comfort of wearable devices,the flexibility of radio frequency devices has become an issue that cannot be ignored.As an integral part of radio frequency devices,the flexibility of antennas is becoming more and more urgent.Considering the wide application of wearable devices and the demand for flexible RF devices,this thesis explores the possibility of application of silver nanowires(AgNWs)and polydimethylsiloxane(PDMS)to the flexible antennas.With different thickness and different conductivity of AgNWs,the performance of flexibility microstrip patch antenna is evaluated using HFSS simulation,parametric studies includes S11 parameter,-10 dB bandwidth,radiation efficiency and front-to-rear ratio.Based on the above flexible material,the-10dB bandwidth of the flexible ultra-wideband coplanar waveguide feed disc monopole is also investigated.In addition,antenna fabrication is conducted by joint efforts with Beijing University of technology and Sun Yat-sen University.Measurement is also conducted.After measured the physical antenna,the paper compares the reasons for the difference between the simulation results and the measured results,summarizes the problems existing in the processing and measurement of the physical antenna,and puts forward the improvement plan.