A miniaturized GPS cone conformal antenna array using linear polarization
Release Time:
2024-06-13
GPS is an indispensable component in high-speed aircraft such as aircraft and missiles, and it is widely used in navigation, mapping, monitoring, timing, communication and other fields. In the research and development process of GPS system, antenna has become one of the key problems that must be solved. These aircraft require antennas that do not affect their aerodynamic performance or damage their mechanical structure and strength. Therefore, conformal antenna arrays with outstanding performance advantages such as low profile and easy integration have been widely used in aircraft.
At present, there are many reports on the research of conical conformal antenna arrays. An analysis method of a conical conformal antenna array is proposed, and a conical conformal antenna array in the millimeter wave band is studied. For the above-mentioned cone conformal antenna array, the working frequency is higher, the size is basically unlimited, and the arc spacing of adjacent units is greater than or close to the half-wavelength of the antenna working frequency. However, in the case of limited antenna size, if the arc spacing of adjacent units is less than half wavelength, the coupling between cells will be intensified, and the voltage standing wave ratio of the antenna array will deteriorate sharply, and the radiation characteristics will also fluctuate violently, which is extremely unstable. Therefore, in the GPS frequency band, the antenna size is limited by the surface area of the conformal cone, and the miniaturization of the antenna has become the core problem in the design. As is the case, GPS antennas are right-handed circularly polarized antennas, but in consideration of the requirements of miniaturization, in order to meet the radiation characteristics, the use of linearly polarized antennas can reduce the loss of 3dB. Therefore, in this paper, a miniaturized GPS cone conformal antenna array using linear polarization is designed, which can reduce the antenna size and improve the antenna performance.
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Daxiandi Industrial Area, Quantang, Liaobu Tomn, Dongguan, Guangdong, China
