Low frequency radiating element and antenna

By designing specific filter bands and radiation arm structures in low-frequency radiation units, interference from high-frequency radiation units is reduced, the problems of cross-polarization and beam distortion in the antenna are solved, and the performance and gain of the antenna are improved.

CN111555030BActive Publication Date: 2024-12-24COMBA TELECOM TECH (GUANGZHOU) CO LTD +1
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Patent Information

Application Number
CN202010420333.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-05-18
Publication Date
2024-12-24
Estimated Expiration
2040-05-18

AI Technical Summary

Technical Problem

When mixing high and low frequency arrays, there is mutual interference between the medium and low frequency radiation units of the existing antenna and the high frequency radiation units, resulting in cross-polarization of the directional graph, beam skew and beam distortion.

Method used

A low-frequency radiation unit is designed, including four cross-perpendicular radiation arms, and the ends of the adjacent two radiation arms are connected with a filter band for reducing interference from the high-frequency radiation unit. The filter band is composed of alternately distributed U-shaped lines and The transition line consists of which the radiation arm opens an opening away from the center and is connected to the filter band, and further reduces interference through the second U-shaped line and the transition line.

Benefits of technology

It effectively reduces interference from high-frequency radiation units, improves the gain and performance indicators of the antenna, and reduces resonance. It is suitable for multi-system and multi-band antenna applications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a low-frequency radiation unit and an antenna, the technical solution of which is that the low-frequency radiation unit includes four cross-shaped vertical radiation arms, a filter section for reducing interference to the high-frequency radiation unit is connected between the ends of two adjacent radiation arms, the filter section includes a first U-shaped line and a first transition line for impedance matching, and the first U-shaped line and the first transition line are alternately distributed; an opening is provided at one end of the radiation arm, and the radiation arm is provided with a second transition line and a second U-shaped line on both sides of the opening, the second transition line is used for impedance matching, the second transition line and the second U-shaped line are alternately distributed, and the radiation arm is connected to the first U-shaped line at the end of the filter section through the second transition line. By correspondingly forming the first U-shaped line and the second U-shaped line on the filter section and the radiation arm, the resonance between the high-frequency and low-frequency radiation units is reduced, and the interference of the low-frequency radiation unit on the high-frequency radiation unit is reduced.
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