High-frequency power distribution circuit and antenna module

By cascading equal and unequal distributors, the problem of high-frequency signals not being able to be equally distributed to 2n RFICs is solved, realizing efficient and flexible high-frequency signal distribution on multilayer substrates, ensuring high isolation and flexible distribution ratio.

CN121887209APending Publication Date: 2026-04-17MURATA MFG CO LTD
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Patent Information

Application Number
CN202511472929.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-10-17
Filing Date
2025-10-15
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing high-frequency power dividers cannot distribute high-frequency signals to any number of RFICs other than 2n RFICs, and it is difficult to install dividers with large distribution ratios on multilayer substrates, resulting in reduced isolation.

Method used

A combination of equal distributors and unequal distributors with a distribution ratio of less than 2 is used to construct a high-frequency power distribution circuit through cascading connections. This increases the degree of freedom in the distribution of high-frequency signals, and the distribution ratio is adjusted by adjusting the characteristic impedance of the branch transmission lines.

Benefits of technology

It achieves equal distribution of high-frequency signals from multiple RFICs, suppresses the reduction of isolation, and is easy to mount on multilayer substrates, ensuring high isolation and flexible distribution ratio adjustment.

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Abstract

The invention provides a high-frequency power distribution circuit capable of improving the degree of freedom of the number of objects for equally dividing a high-frequency signal input to one node. A high-frequency signal is input to the first node. A high-frequency signal is output from each of the plurality of second nodes. The first branch transmission path connects the first node with each of the plurality of second nodes. The first branch transmission path includes a plurality of distributors connected in cascade, each of the plurality of distributors has one input node and two output nodes, some of the plurality of distributors are equal distributors, and the remaining distributors are unequal distributors having a distribution ratio of 2 or less. The first branch transmission path is configured such that high-frequency power input to the first node is equally allocated to the plurality of second nodes.
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