A short wave antenna with a significantly enhanced ground wave component

By designing a shortwave antenna with significantly enhanced ground wave components and employing a cooperative radiating element consisting of an upper and lower cone, the problem of insufficient near-field coverage of traditional shortwave antennas was solved, achieving stable near-range coverage and improving the coverage range and signal quality of the communication system.

CN224342511UActive Publication Date: 2026-06-09BEIJING SINO SKY HI TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING SINO SKY HI TECH
Filing Date
2025-07-08
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional shortwave antennas rely on ionospheric reflection, resulting in poor or even no near-field coverage, failing to meet near-field coverage requirements.

Method used

A shortwave antenna with significantly enhanced ground wave components was designed. It employs an upper and lower cone antenna as cooperative radiating elements, connected by a feed chamber. The upper cone radiates electromagnetic waves and reflects the electromagnetic waves from the lower cone to the ground. Combined with a specific dipole wire distribution and material selection, a stable strong ground wave coverage is formed.

Benefits of technology

It significantly improves ground wave propagation efficiency, overcomes near-field signal coverage blind spots, achieves continuous and stable short-range coverage in the shortwave band, and enhances the coverage and signal quality of the communication system.

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Abstract

This invention provides a shortwave antenna with significantly enhanced ground wave components, comprising an upper antenna cone, a feed chamber, a lower antenna cone, a support rod, and an antenna positioning ring. The top of the support rod is connected to the feed chamber, the lower end of the upper antenna cone is connected to the upper end of the feed chamber, the upper end of the lower antenna cone is connected to the lower end of the feed chamber, and the lower end of the lower antenna cone is connected to the antenna positioning ring mounted on the ground. The upper antenna cone includes 12 dipole wires and an upper cone disk, while the lower antenna cone includes 24 dipole wires. The feed chamber connects the upper and lower antenna cones via inner and outer conductors, forming a cooperative radiation unit that reflects the electromagnetic wave components radiated upwards by the lower antenna cone back to the ground, thereby increasing near-field ground coverage and improving ground wave propagation efficiency. This invention enhances near-field coverage and effectively overcomes the problem of poor or even non-existent near-field coverage in traditional shortwave antennas.
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