One-dimensional electronic control beam scanning circularly polarized antenna and control method thereof

Abstract

The invention relates to an antenna, and in particular relates to a one-dimensional circularly polarized antenna for realizing beam scanning in an electric control mode and a control method thereof. The invention discloses the one-dimensional circularly polarized antenna for realizing beam scanning in an electric control mode. The one-dimensional circularly polarized antenna comprises a circularlypolarized radiation unit array, a first dielectric substrate, a prepreg and a traveling wave feed structure. The prepreg is arranged on the traveling wave feed structure. The first dielectric substrate is arranged on the prepreg, and the circularly polarized radiation unit array is arranged on the first dielectric substrate. The circularly polarized radiation unit array comprises two rows of circularly polarized units. The traveling wave feed structure comprises a traveling wave waveguide structure. The traveling wave waveguide structure is provided with a slot array, and the traveling wave waveguide structure is further provided with a diode array. The antenna provided by the invention has the characteristics of low cost, high gain, wide-angle scanning and circular polarization.

Description

technical field [0001] The invention relates to an antenna, in particular to a one-dimensional circularly polarized antenna which realizes beam scanning in an electronically controlled manner and a control method thereof. Background technique [0002] Electronically controlled beam scanning antennas can meet various application scenarios that require beamforming, such as satellite communications (including mobile communication), drones, driverless cars, 5G mobile communications, smart logistics and other fields. At present, most beam scanning antennas are in the form of active phased array antennas. Although they are very powerful, they use a large number of T / R components, resulting in complex systems and high costs, which limit their large-scale applications. In recent years, the methods to achieve electronically controlled beam scanning mainly include various reconfigurable methods based on loading active electronic switches or tunable materials, such as PIN diodes, varac...

AI Technical Summary

Problems solved by technology

[0007] Document 4 (Z.Li, Y.J.Guo, S.L.Chen, and J.H.Wang, "A period-reconfigurable leaky-wave antenna with fixed-frequency and wide-angle beam scanning," IEEE Transactions on Antennas and Propagation, vol.67, no.6 , pp.3720-3732, Jun.2019.) proposed an electronically controlled beam scanning leaky wave antenna, but it can only achieve linearly polarized radiation, and the gain is not high

Images