Simulation And Design Of Conformal Microstrip Antennas

The development of aeronautics and astronautics has promoted the development of antennas on aircraft carriers.Usually,the antenna needs to be installed on the carrier for transmitting and receiving signals,but the installed antenna can not have a kinetic influence on the carrier in motion,and the antenna pattern needs to have a specific radiation direction.The microstrip antenna has the advantages of simple structure,low profile,light weight and easy conformality with the carrier.Therefore,the microstrip antenna has been widely used as a carrier conformal antenna,and are favored by more and more researchers from all over the world.In this dissertation,the conformal bomb antenna is taken as the research background,and a conformal microstrip array antenna with two poles and one conical microstrip antenna with two cones are designed to measure the velocity and angle of the target.The first kind of antenna uses the microstrip Yagi unit as the array element to form a matrix and selects the network structure of the parallel feed.Based on the T-junction power splitter,a one-sixteenth-degree equal-phase feed network is designed,and then the micro With the array element and the power sub-network matching connection,and ultimately designed one fat two income cylindrical conformal microstrip array antenna,the antenna center frequency of 24GHz,the bandwidth of 1.8GHz,E-plane radiation front direction,lobe width of the valve is about-60°?60°,H-plane is omnidirectional radiation,and the non-circularity is less than 5dB.The second antenna to rectangular array element array for the array,the same also choose the parallel feed network structure to T-junction power splitter based on the design of a sixteen and one thirty-three equal amplitude feed Network,and then match the microstrip array element and the power distribution network,and finally design one fat two income conformal microstrip array antenna.The center frequency of the antenna is 24 GHz and the bandwidth is 300 MHz.The E-plane pattern is butterfly,lobe width of about-60°?30°?30°?60°,H-plane is omnidirectional radiation,non-circularity less than 5dB.The above two types of 24GHz cylindrical and conical microstrip antennas have been made in-kind and tested,and the results show that the two 24GHz conformal microstrip antennas meet the design requirements.