A four-channel OAM antenna for millimeter wave short-range communication

By designing a four-channel OAM antenna and utilizing a microstrip antenna array and a composite feed network, efficient multi-channel communication of millimeter-wave contactless connectors was achieved, solving the problems of insufficient channel capacity and communication rate, and providing a high-speed and reliable contactless connection solution.

CN120879236BActive Publication Date: 2026-04-07BEIJING UNIV OF POSTS & TELECOMM
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Patent Information

Application Number
CN202510989791.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2026-04-07
Estimated Expiration
2045-07-17

AI Technical Summary

Technical Problem

Existing millimeter-wave contactless connectors are deficient in terms of channel capacity and communication rate. Traditional electrical connectors are susceptible to mechanical wear, oxidation and environmental factors in high-frequency and high-speed applications, leading to decreased signal integrity and connection failure.

Method used

Design a four-channel OAM antenna for millimeter-wave short-range communication. Employ a microstrip antenna array, Butler matrix phased network, and substrate-integrated coaxial phase delay network. Through orbital angular momentum mode multiplexing mechanism, beam generation and multiplexing transmission of four OAM modes are realized. Multiple OAM modes can be generated or separated simultaneously using the same antenna array.

Benefits of technology

It significantly improves the system's spatial reuse capability and data transmission capacity, realizing high-speed, high-reliability non-contact short-range communication, suitable for scenarios such as non-contact connectors, board-to-board wireless interconnection and precision industrial interfaces, and improves spectrum utilization efficiency and data throughput.

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Abstract

The application provides a four-channel OAM antenna for millimeter wave close-range communication, which comprises a microstrip antenna array structure layer, a Butler matrix phased network structure layer, a SICL-based phase delay network structure layer and a quasi-coaxial via hole conversion structure, the quasi-coaxial via hole conversion structure comprises a first feed hole and a second feed hole; the Butler matrix phased network structure layer, the SICL-based phase delay network structure layer and the microstrip antenna array structure layer are sequentially stacked; the end of the microstrip line in the Butler matrix phased network structure layer corresponds to one end of the first feed hole, the first feed hole is vertically extended from the Butler matrix phased network structure layer and corresponds to one end of the substrate integrated coaxial line in the SICL-based phase delay network structure layer; the microstrip antenna array structure layer is provided with microstrip patch antennas, each antenna corresponds to a second feed hole, and the second feed hole is vertically extended and corresponds to the other end of the substrate integrated coaxial line in the SICL-based phase delay network structure layer.
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