The Design And Implementation Of Miniaturized Antenna Array For Aircraft Carrier

The aircraft carrier antenna is an air interface for aircraft information systems such as wireless communication,navigation,investigation,and electronic countermeasures,etc.So its research and design have important practical value.In order to realize multiple functions,the aircraft usually has a large number of electronic equipments,but the space is scarce.Therefore,miniaturized low-profile aircraft carrier antennas has become an important research direction.The aircraft carrier antenna must not only have good electrical performance,but also balance the aerodynamic characteristics of the aircraft.In this paper,the microstrip quasi-Yagi antenna,the waveguide slot antenna and the horn antenna based on nonradiation dielectric integrated waveguide are designed with the aircraft carrier.The main contents are summarized as follows:First,a microstrip quasi-Yagi antenna is designed.The classical microstrip quasi-Yagi antenna is fed by the planar balun structure.Due to the limitation of the length of the oscillator and the feed structure,the size of the antenna is relatively large.A miniaturized antenna is designed on this basis.Vertically,the feeder of the antenna and a quarter wavelength impedance converter are placed horizontally;Horizontally,using the tree fractal technique to reduce the antenna active oscillator length,and Using capacitive loading techniques,adding metal strips at both ends of the reflector to reduces the width of the reflector.The size of the miniaturized antenna is 105 mm ×123.6mm×1.5mm.The effect of antenna installation position on the antenna performance was studied when the antenna was put on the carrier.Finally,the antenna unit is processed and tested.The results are in good agreement with the simulated results.Second,the waveguide slot antenna is designed.Based on the low profile requirement of the antenna,a waveguide narrow side slot antenna array is designed,but this traditional rectangular waveguide slot antenna is very large.So we need miniaturized the antenna,and a compact partial H-plane waveguide slot antenna is designed.The antenna is implemented by inserting a metal vane inside a folded waveguide.Compared with the conventional waveguides,the cross section of the partial H-plane waveguide is reduced by 75%.At the same time,in order to facilitate the installation,the antenna is feed by coaxial,and the coaxial inner core and metal vane intersect.The overall simulation of the partial H-plane waveguide antenna and carrier platform shows that the antenna gain reached 6.9dBi,the performance meets the design requirements.Finally,according to the basic principle of nonradiation waveguide,a horn antenna based on SINRD waveguide is designed.The antenna uses the substrate integration technology to realize the planarization of the nonradiating waveguide,which makes the antenna processing convenient and the structure is stable.The antenna is composed of two layers of dielectric substrate and it is easy to integrate with other hybrid circuits using the transition structure feed of the microstrip line to the slot line.At the same time,in order to obtain a higher gain,the structure of Hplane horn antenna was adopted in the design,so that the gain of antenna unit reached 6.284 dBi.At the same time,the antenna and the carrier platform are simulated together,and the influence of the carrier on the antenna performance is studied.