Rectangular waveguide radial power combiner

Abstract

The invention discloses a rectangular waveguide radial power combiner. The rectangular waveguide radial power combiner has a broad frequency band, high efficiency and high power capacity. According tothe technical scheme, a mode converter is communicated with a power combination cavity in a disk through an S-tube double-bend circular waveguide in an S-shaped double-bend tube form from a waveguideport (4) at the bottom fixed end of the S-tube double-bend circular waveguide, and the free end of the S-tube double-bend circular waveguide is fixedly connected with a square window waveguide cavityof a cone-shaped waveguide; rectangular waveguide input ports are formed in a hollow platform of the disk, wherein the rectangular waveguide input ports are equally divided according to a circumferential angle, point to the power combination cavity and are radially distributed in an equal circular array around a center matching circular table; the mode converter converts a main TE<10> mode in a rectangular waveguide into a TM<01> mode in the S-tube double-bend circular waveguide, wherein an electric field has radial rotating characteristics in the TM01 mode; and through coupling of a main TE<10> mode in the power combination cavity and a main TE<10> mode in each radially-distributed rectangular waveguide input port channel, equiamplitude in-phase synthesis of all the input ports is completed finally.

Description

technical field [0001] The invention relates to the field of microwave / millimeter wave circuits, in particular to microwave / millimeter wave modules and components including mode converters, which are mainly used in multi-channel high-efficiency power synthesis of rectangular waveguides. Background technique [0002] Microwave / millimeter wave power synthesis technology is usually divided into chip-level synthesis and circuit-level synthesis. Chip-level synthesis connects multiple amplifier dies in parallel to achieve output power superposition. Its physical size is generally much smaller than the wavelength, thus limiting the synthesis scale. Circuit-level power synthesis can be divided into two types: resonant and non-resonant according to the realization principle. Typical resonant power combiners are based on rectangular or cylindrical cavities, and are widely used in narrowband power amplifiers and oscillators. The disadvantages are poor phase noise and frequency stabilit...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low efficiency of the current cascaded multi-channel waveguide power combiner in the millimeter wave high frequency band, and propose a rectangular waveguide radial power combiner with wide frequency band, high efficiency and high power capacity for multi-channel one-time synthesis. , in order to achieve the purpose of increasing the output power of the millimeter-wave high-band synthetic amplifier

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