Active dual-band liquid crystal transmissive / reflective array structure

The active dual-band liquid crystal transmissive-reflective array structure addresses the limitations of passive arrays by switching between reflective and transmissive modes, enabling efficient operation in multiple communication frequency bands and beam-shaping directions.

JP7873769B1Active Publication Date: 2026-06-12TMY TECH INC
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Patent Information

Application Number
JP2025144427
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2025-02-14
Filing Date
2025-09-01
Publication Date
2026-06-12
Estimated Expiration
2045-09-01

AI Technical Summary

Technical Problem

Existing array structures, particularly passive-type structures, lack adjustability and are limited in operation frequency bands and beam-shaping directions, making them inadequate for diverse communication requirements.

Method used

An active dual-band liquid crystal transmissive-reflective array structure comprising multiple substrate layers and liquid crystal layers that switch between reflective and transmissive modes based on applied bias voltage, allowing operation in the 5G millimeter-wave and low-earth orbit satellite communication frequency bands.

Benefits of technology

The structure enables flexible frequency adaptation and beam-shaping capabilities, meeting the demands of both 5G millimeter-wave and low-earth orbit satellite communication by switching between reflective and transmissive modes, enhancing communication flexibility and efficiency.

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Abstract

We will complete an antenna array structure applicable to the 5G millimeter-wave communication frequency band and the low-Earth orbit satellite communication frequency band. [Solution] We propose an active dual-band liquid crystal transmissive / reflective array structure with a special structural design. The present invention provides an active dual-band liquid crystal transmissive / reflective array structure which includes a first substrate layer, a second substrate layer, a first liquid crystal layer, a first surface unit, a second surface unit, a third surface unit, and a fourth surface unit. The first liquid crystal layer is laminated and connected between the first substrate layer and the second substrate layer. When no bias voltage is applied to the first liquid crystal layer, the center operating frequency of the active dual-band liquid crystal transmissive / reflective array structure is in the first frequency band, and relatively, when a bias voltage is applied to the first liquid crystal layer, the center operating frequency of the active dual-band liquid crystal transmissive / reflective array structure is in the second frequency band, and the first frequency band is higher than the second frequency band.
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Citation Information

Patent Citations

  • Liquid crystal antenna and communication equipment

    CN206349494U

  • Intelligent reflecting surface

    US20240322429A1

  • Phase modulation surface unit, phase modulation surface structure, and terminal device

    US20240396499A1