Four path or over four path coaxial power dispenser

Abstract

The invention relates to a coaxial power divider of four ways or more than four ways. The coaxial power divider uses symmetrical cross branch nodes for branching a divider needing multi-way output several times. The previous cross branch node generates two directly used output ports and an output port used for the subsequent branch. If the number of ways is an odd number, the last branch is a cross branch. If the number of ways is an even number, the last branch is a T-shaped branch. Through branching several times, the high incontinuity of directly branching is broken down into low incontinuity of branching several times. The reflectivity at the lowly incontinuous positions is significantly reduced, thereby reducing the difficulty in matching and achieving wide-band equal-power division output of more than 6GHz.

Description

technical field [0001] The invention relates to a power distribution device in the field of microwave communication, in particular to a broadband four-way or more than four-way power divider based on a coaxial line structure. Background technique [0002] In the field of microwave communications, a power splitter divides an input signal into two or more smaller power signals. Generally, Wilkinson power dividers are used in planar circuits, and output port matching and mutual isolation can be realized; non-planar circuits mostly use branch junction power dividers, and output port matching and mutual isolation cannot be realized at the same time. In order to achieve high-power broadband power distribution, coaxial transmission lines are often used. The essence of the broadband branch junction power divider is to use different branch numbers according to the number of output channels on the basis of multi-stage λ / 4 impedance converters. Therefore, the bandwidth is determined ...

AI Technical Summary

Problems solved by technology

However, with the increase of operating frequency, the index of the four-way power divider using direct branch deteriorates sharply and loses its application value. The reason is that the discontinuity of the same physical size has far more influence on high-frequency signals than low-frequency signals. Influence, and more than four direct branches, the discontinuity brought by the branch junction is too strong, the signal after the branch is reflected too strongly at the branch junction, so it is extremely difficult to achieve broadband matching

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