A Miniaturized Ku/Ka Dual-frequency Microstrip Array Antenna Design

Fuse work at different bands is an effective method in responds to aimed jamming,but the design of common aperture dual band is always a difficulty in missing application which has strict requirements on the structure.This topic focus on a kind of miniaturized Ku/Ka dual band microstrip array antenna which used on the cannonball.The main research can be summarized includes:(1)Based on.the analysis of Agile frequency and pseudo-code phase modulation radio fuze detection principle,The anti-jamming performance is modeled and analyzed in the case of affected by noise frequency-modulation jamming and noise phase-modulation jammjing.The results show that aimed jamming can still jam Agile frequency and pseudo-code phase modulation radio fuze effectively.An adaptive frequency band and multi-system detection scheme based on RF reconstruction is proposed,and the key is design of a Ku/Ka dual-band antenna.(2)Considering the small size of the fuze,a stacked co-aperture microstrip array antenna is proposed.The form of Rectangular patch array coplanar nested round patch array is adopted to achieve Ku/Ka dual-frequency total caliber working form.The feeding network has been designed.In Ka band,the feeding method is Gap coupling and in Ku band,the feeding method is achieved by Coplanar microstrip line.The feeder network power divider has been improved and optimized at the same time.(3)According to the design,the parameter optimization and simulation of unit and array of Ku/Ka double-frequency laminated co-aperture microstrip array antenna were carried out.The design results show that the gain of Ku/Ka antenna reaches 11dB and 17dB respectively,and the beamwidths are±27°and±9° respectively.The simulation results are in line with the requirements of the system..(4)The processing schematic of the antenna is designed and the antenna was made into a finished product.The parameters of the antenna was tested by a series of system experiments.Experimental results shows the dual-frequency antenna can detect the triangular reflector 10 meters away and the expected goal is basically reached.