Abstract:According to the design principle of Fresnel zone plate lens,Fresnel antennas with the multilayer dielectric structure were designed.For the new design,high-gain antenna is used to provide feed,and by controlling Fresnel zone plate lens,the gain increase and the bandwidth reduce were achieved.In order to meet the requirements of peer terahertz communication,comparisons of different dielectric layers and the number of cycles were performed,and the results show that with the increase of the cycle and the number of dielectric layers,the gain will continuely increase.When the diameter of the band piece is approximately same to the area of caliber speakers,the diffraction effect is more obvious,the loss of electromagnetic waves is greater,and the resonant frequency shifts to the right in the atmospheric window.
