Fan-shaped waveguide-based power distributor/synthesizer

Abstract

The invention discloses a waveguide multi-path power distributor / synthesizer applicable to a millimeter wave frequency high end. A fan-shaped waveguide-based power distributor / synthesizer comprises a rectangular waveguide input port, a mode exciter, a 180-degree fan-shaped waveguide, a matching structure and a plurality of (n is greater than or equal to 2) rectangular waveguide output ports, wherein a TE10 mode in the rectangular waveguide excites a TE01 mode in the fan-shaped waveguide through a mode converter (a rectangular waveguide feed source or a Y-type waveguide feed source, the rectangular waveguide feed source is used when the fan angle is smaller than 90 degrees, and the Y-type waveguide feed source is used when the fan angle is between 90 degrees and 180 degrees), and achieves inhibition on other modes. Mode conversion and energy distribution of the fan-shaped waveguide to the TE10 modes of n rectangular waveguides are achieved through the multi-path power distributor; and a signal of each output port is equal in amplitude and phase. Compared with a round waveguide, the fan-shaped waveguide excitation mode is free of polarization degeneracy, higher in mode purity and higher in bandwidth; and compared with a TEM mode with a coaxial line, the fan-shaped waveguide excitation mode is smaller in loss, higher in power capacity, larger in circuit dimension and lower in processing cost and processing difficulty.

Description

technical field [0001] The invention relates to the technical field of millimeter wave power synthesis, in particular to a fan-shaped waveguide-based power distribution / combiner. Background technique [0002] Millimeter waves are of great significance in the fields of communication, radar, guidance, electronic warfare, radio astronomy and clinical medicine. Compared with low-end microwaves, millimeter waves can carry more information and have higher tracking and identification accuracy; millimeter wave components are smaller in size, so millimeter wave systems are easier to miniaturize. In millimeter-wave circuits and electronic systems, the transmission power of the transmitter has decisive significance for the operating distance, communication quality, interference and anti-interference capabilities of the system. Microwave and millimeter-wave all-solid-state high-power transmission systems have become modern advanced microwave and millimeter-wave communications. and rada...

AI Technical Summary

Problems solved by technology

Free space power combining technology is only suitable for obtaining high power at the point of space power demand. This kind of technology is not convenient to realize the solid-state high power output of standard interface, which is not conducive to the application and promotion of the system; it can realize quasi-optical space power combining technology with standard output port It also faces problems such as low synthesis energy collection efficiency, high-order mode influence in the synthesis network, narrow frequency bandwidth of the synthesis network, and radiation loss.

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