Millimeter-wave waveguide synthesis amplifier structure improved in productivity and consistency

Abstract

The invention discloses a millimeter-wave waveguide synthesis amplifier structure improved in productivity and consistency. The structure comprises an upper chamber and a lower chamber. An input waveguide is arranged in a cavity of the upper chamber. The input waveguide is connected to the input end of an MMIC circuit through a gradual changing wire, and the output end of the MMIC circuit is connected to an output waveguide through a gradual changing wire. The upper chamber and the lower chamber are of fully symmetrical structures, and are in butt joint with each other. The edges of both the input waveguide and the output waveguide connected to the gradual changing wires are like periodical waveforms. The two chambers of the symmetrical structures are adopted to replace an upper chamber, a pad and a lower chamber. Compared with a three-layer structure, the two symmetrical chamber structures without a pad in the middle have the advantages that the engaging precision requirement is low and the productivity is great. A dielectric sheet free from extrusion of a pad will not deform or damaged, the simulation and actual engaging degree is high, and the consistency and reliability also can be greatly improved. A dielectric groove structure formed by a pad and the chambers will not be destroyed, resonance will not be generated, and good broadband features are exhibited.

Description

Technical field [0001] The invention relates to the technical field of solid-state power amplifiers, and in particular to a millimeter wave waveguide synthesis amplifier structure that can improve productivity and consistency. Background technique [0002] Millimeter-wave solid-state devices have the advantages of low DC power consumption, high reliability, compact circuit structure, small size and light weight, etc., so they have attracted much attention and have been widely used. The output power of a single solid-state device is far from reaching the power application due to the limitation of its own semiconductor physical characteristics, so the method of using multiple solid-state devices for power synthesis to obtain high power output is a hot research topic. [0003] The two-layer spatial power synthesis technology solution based on the millimeter wave waveguide space is widely used in millimeter wave systems due to its small size and compact structure. However, because it c...

AI Technical Summary

Problems solved by technology

When the gradient line overlaps with the cavity and the gasket structure, the dielectric sheet is easily deformed by extrusion, which makes the simulation model seriously inconsistent with the actual situation, and the callback loss deteriorates

The semi-enclosed space surrounded by the medium, the gasket and the cavity is easy to resonate, resulting in severe jitter in the bandwidth range and poor broadband characteristics

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