Roundabout broadband efficient multi-channel space power synthesis network

Abstract

The invention discloses a roundabout broadband efficient multi-channel space power synthesis network, which is divided into upper and lower layers and comprises a lower transfer cavity, an upper coverboard, a lower bottom surface radiator and an upper top surface radiator, wherein the upper cover board covers an upper end cover of the lower transfer cavity; the upper top surface radiator is arranged at the upper side of the upper cover board; the lower bottom surface radiator is arranged at the lower end of the lower transfer cavity; microwave circuits are regularly distributed in the lower transfer cavity; an E-plane waveguide power division network and waveguide E-plane double probes are adopted by the regular lower transfer cavity as power distribution and synthesis units; and meanwhile, the E-plane waveguide power division network is of a multi-stage roundabout structure, so that waveguides at an input end and an output end are arranged on the same horizontal line; a full operating frequency range corresponding to a standard waveguide can be directly covered, and meanwhile, the problems, in synthesis efficiency, productibility and heat dissipation efficiency, of the prior artcan be solved.

Description

Technical field [0001] The invention relates to a circuitous broadband high-efficiency multi-channel spatial power synthesis network. Background technique [0002] Microwave millimeter solid-state power amplifiers have limited output power of existing power amplifier chips. Using power combining technology for multi-channel power combining is an effective means to improve its output power capability. At present, power combining technologies are mainly divided into two types: planar power combining and spatial power combining. Although the planar power synthesis technology has a simple structure, its synthesis efficiency and power handling capability are not ideal. Compared with planar power combining technology, spatial power combining technology has the advantages of low path loss and large power capacity, but the common problem encountered is how to further effectively improve power combining efficiency, reduce loss, increase working bandwidth, and improve Power capacity, imp...

AI Technical Summary

Problems solved by technology

[0004] figure 1 The technical scheme of spatial power combination shown can distribute and combine input signals with equal amplitude and phase, but it is difficult to achieve broadband matching in the whole waveguide frequency band, and high-order modes are easily excited at the bifurcation of waveguide and waveguide. Deteriorating the echo reflection of the input port greatly affects the efficiency of its insertion loss and power combination; at the same time, the overall structure of the technical solution is radial in space, which requires high processing and assembly technology, and its processing and assembly errors are difficult It is guaranteed, and the effective heat dissipation area of ​​each amplifying unit is small, and the heat dissipation efficiency is low, so it is difficult to apply to a synthesis system with a larger power capacity

[0005] In summary, the traditional planar power combining technology and spatial power combining technology have certain limitations:

[0006] In terms of working bandwidth, the traditional planar power combiner and the common radial waveguide-based space power combiner have certain limitations, and cannot work in a completely wide-band range;

[0007] In terms of heat dissipation efficiency, because the power distribution and synthesis of traditional planar power combiners are completed in dielectric materials, the problem of heat dissipation and power capacity has always been an unsolvable problem. However, the overall structure of the spatial power combiner based on radial waveguides It is in the shape of a radiating disk, the effective heat dissipation area of ​​each amplifier unit is limited, and the heat dissipation efficiency cannot be effectively improved;

[0008] In terms of combining efficiency, the traditional planar combiner has large path loss and poor phase consistency, so it is difficult to guarantee its high combining efficiency. When the power combiner based on radial waveguide is working, the bifurcation of waveguide and waveguide is easy to excite high Secondary mode, which deteriorates the echo reflection of the input port, thus greatly affecting the efficiency of its insertion loss and power combination;

[0009] In terms of manufacturability, the overall structure of the traditional radial waveguide space power combiner is spatially radial, but its biggest disadvantage is the high requirements for processing and assembly tolerances

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