Dual-frequency polarization adjustable multi-beam radio frequency assembly

Abstract

The invention discloses a dual-frequency polarization adjustable multi-beam radio frequency assembly, and belongs to the technical field of phased-array antennas. The system comprises a plurality of basic radio frequency module units and 2k beam forming networks, each basic radio frequency module unit comprises two input branches and two output branches, the input branch comprises a first low-noise amplifier, a multiple-input multiple-output filter bank switch matrix and 2k second low-noise amplifiers, the output branch comprises k polarization matching chips, a multiple-input multiple-outputfilter bank switch matrix and k rear-end branches, and each rear-end branch comprises an amplitude-phase control chip and a low-noise amplifier; each input branch is provided with an input port, and each rear-end branch is provided with an output port. The invention is suitable for phased array antennas or sub-array level digital arrays in the field of satellite communication, and is particularlysuitable for the purpose of realizing multi-satellite communication by a pair of antennas.

Description

technical field [0001] The invention relates to the technical field of phased array antennas, in particular to a dual-frequency polarization adjustable multi-beam radio frequency component. Background technique [0002] At present, the common design methods of dual-frequency polarization-tunable multi-beam RF components mainly include the following: [0003] 1. The high and low frequencies are realized through different radio frequency branches. The concept of this design is relatively simple, easy to implement, and relatively independent in terms of electrical radio frequency, physical structure, application functions, and various interfaces. However, this type of design method has high requirements on the physical size of the RF module. The design of the RF branch circuit in each frequency band must be guaranteed by an independent physical space to achieve the corresponding electrical performance, and the relationship between the external interface is complicated, which i...

AI Technical Summary

Problems solved by technology

This method divides each channel into multiple sub-channels, and each sub-channel implements a different beam function. The advantage of this design is that the required volume is small and the degree of integration is high, but the polarization characteristics of the antenna beam are not flexible enough. And the isolation between channels needs to be carefully designed, especially for multi-frequency applications with large frequency band differences, the beam orthogonality generated by this type of design is relatively poor

[0006] It can be seen that various dual-frequency polarization-tunable multi-beam radio frequency components in the prior art still have various problems in their implementation and use effects, and there is still room for improvement

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