A low-profile four-arm helical GNSS multi-frequency multi-mode antenna

By designing a four-arm helical GNSS multi-frequency multi-mode antenna, the problems of complex structure and large space occupation in the existing technology are solved, realizing multi-frequency multi-mode signal compatibility and high-precision navigation, which is particularly suitable for vehicle-mounted and portable devices.

CN224342523UActive Publication Date: 2026-06-09SHENZHEN ZHENGDA XINWEI COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ZHENGDA XINWEI COMM EQUIP CO LTD
Filing Date
2025-07-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing GNSS multi-frequency antennas have complex structures, are difficult to debug, and occupy a lot of space, making it difficult to meet the space requirements of vehicle-mounted and portable devices, and their compatibility and accuracy are insufficient.

Method used

It adopts a four-arm spiral design, including four spiral signal arms and four grounding arms, which resonate to generate RHCP receiving frequencies of GNSS high and low frequencies respectively. Combined with a cylindrical structure, it is vertically attached to the PCB active board to achieve multi-frequency and multi-mode signal compatibility and compact spatial layout.

Benefits of technology

It improves the compatibility and accuracy of navigation systems, reduces space occupation, lowers electromagnetic interference, enhances signal reception quality and device portability, and is suitable for in-vehicle and portable devices.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of GNSS antenna technology, and in particular to a low-profile four-arm helical GNSS multi-frequency multi-mode antenna, including an antenna body, a PCB active board, helical signal arms, and grounding arms. The signal arms are attached to the antenna body, and their bottoms are fixedly connected to the grounding arms. Four groups of signal arms are provided, and each group has a signal arm connected to a grounding arm. This application uses four helical signal arms and four grounding arms to resonate the RHCP (right-hand circular polarization) receiving frequencies of GNSS high and low frequencies (L1 and L5), respectively. This antenna can simultaneously receive satellite signals from multiple frequency bands and modes, improving the compatibility and accuracy of navigation systems and meeting the application requirements of multi-frequency single-mode or multi-frequency multi-mode systems. Furthermore, the overall structure of this application is φ40mm*12mm, with a compact design. It occupies little space and is particularly suitable for applications with strict requirements on antenna space dimensions, such as vehicle navigation systems and portable navigation devices, improving the portability and integration of the equipment.
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