Multi-path unequally-divided radial waveguide power divider

Abstract

The invention discloses a multi-path unequally-divided radial waveguide power divider. The multi-path unequally-divided radial waveguide power divider comprises a hollow waveguide circular disc, wherein an input end stepped impedance transformer is arranged on a middle point on one surface of the waveguide circular disc while a plurality of annular regions, concentric with the waveguide circular disc, are on the other surface of the waveguide circular disc; a plurality of output end stepped impedance transformers are uniformly distributed on each annular region; the input end stepped impedance transformer is connected with coaxial line feed input which generates an electric field and a magnetic field; and the electric field is parallel to the axial line of the waveguide circular disc while the magnetic field direction rotates around a circumferential direction. Based on the coaxial symmetry characteristic of the radial waveguide main mode field distribution, power division of different proportions is realized on circles with different radiuses r by taking the input port as the center, through corresponding output ports; in addition, the number of the power division paths is flexible, and multi-path and multi-proportion division can be realized; and therefore, the multi-path unequally-divided radial waveguide power divider can be widely applied to various radar systems and communication systems with amplitude modulation requirements on an antenna array.

Description

technical field [0001] The invention relates to a power splitter, in particular to a multi-channel unequal radial waveguide power divider. Background technique [0002] Power divider is an important basic device in microwave engineering. It is widely used in various civil and military equipment such as civil communication, microwave measurement, radar, communication, electronic countermeasures, and aerospace. It mainly plays a role in the equipment. The microwave energy on the transmission path can be accurately distributed to the antenna end according to the system requirements. Cooperating with the power combiner and microwave amplifier, it can play the role of amplifying small signals and synthesizing high-power microwave signals, which is indispensable in the system. key components. [0003] The traditional power divider is mainly a binary power divider, which is obtained by cascading a 2-way power divider through a binary tree structure. For example, the Wilkinson pow...

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Problems solved by technology

[0005] 1. Since the Wilkinson power distribution network uses microstrip lines or striplines as the carrying transmission lines of the circuit, when devices are required to achieve large-scale unequal divisions, the impedance of one branch transmission line needs to be designed to be very high, but it is limited by processing Influenced by various factors such as technology and reliability, it is not easy for this type of circuit to achieve a unequal ratio of 3:1, and there is still a considerable gap compared with the technical requirements of the amplitude-weighted antenna array.

[0006] 2. For traditional waveguide-type T-junction power dividers, multi-channel distribution needs to be realized by cascading, resulting in too large a multi-channel distribution network

And this kind of structure is not easy to realize the power distribution of odd channels

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