Variable Polarization Fuze Technology And Dual-polarized Microstrip Antenna

In this thesis, the variable polarization technique is introduced into the radio fuze system, in order to improve the system's anti-jamming ability. Based on the discussing of the polarization theory, polarization-agile theory and microstrip antenna design theory, we study the variable polarization transceiver structure and the dual-polarized microstrip antenna. A scheme of variable polarization system is proposed, and its anti-jamming principle is analysised. With the help of the full-wave simulation IE3D, we design,simulate and study the dual side-fed dual-polarized square patch antenna. An antenna unit is designed, and its center frequency is 8.75GHz. Its bandwidth is 1.43%,and the dual-port isolation is 28dB, antenna gain 6.5dBi. The effects of the substrate thickness and the relative dielectric constant are also discussed. At last, based on the study of the microstip antenna array, a 4 units dual-polarized microstrip antenna array is designed.