A Spaceborne Miniaturized Hybrid Reconfigurable Antenna

Abstract

The invention discloses a space-borne miniaturized hybrid reconfigurable antenna, comprising a frequency reconfigurable radiator and a polarization reconfigurable feeding network. The frequency reconfigurable radiator includes a radiator substrate, a tuning screw, a hollow A screw, a rectangular short-circuit block, a feeding probe and a dielectric support cylinder; the polarized reconfigurable feeding network includes a feeding network substrate, a grounded metal plate and a radio frequency connector. The antenna of the invention is suitable for low-orbit micro-satellites, and can realize independent reconstruction of frequency and polarization, and the frequency reconstruction can realize flexible continuous tuning of frequency, and the gain fluctuation under two circular polarization reconstruction states of left-handed and right-handed is small. At the same time, the number of reconstructed components used is small, and the overall structure of the antenna has excellent strength, thermal environment adaptability and anti-radiation characteristics, which meets the requirements of aerospace environment.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a space-borne miniaturized hybrid reconfigurable antenna. Background technique [0002] The antenna with frequency and polarization reconfigurable function can make the antenna work in multiple frequency bands dynamically, there is almost no interference between the frequency bands, and the radiation pattern can remain roughly unchanged, but the current design method of reconfigurable antenna , the frequency reconstruction requires more than 6 devices, and the polarization reconstruction requires more than 2 devices, both of which have the problems of a large number of reconstruction devices and complex circuits. It is too single, and it is greatly restricted in spaceborne applications. Most of the design methods use a large number of devices, resulting in a complex circuit topology, which is not suitable for on-board use; some design methods use a small number of devices, but ...

AI Technical Summary

Problems solved by technology

The existing reconfigurable antennas have the following problems: firstly, the circuit of the frequency or polarization reconfigurable antenna with a single function is relatively simple, and the hybrid reconfiguration of the two often requires more reconfigurable devices, and the increase in the number of devices directly leads to The reconstruction circuit and control logic are complex, which increases the size of the whole machine

Secondly, the common use of reconfiguration devices can reduce the number of reconfiguration devices to a certain extent, but it leads to the loss of independence and flexibility of the two reconfiguration types

Thirdly, the existing reconfigurable antennas do not have the ability to resist the radiation, force and heat of the aerospace environment

Images