An ultra-wideband reflectionless frequency band absorption dipole antenna and a modulation method thereof

By designing a combination of a first dipole arm, a second dipole arm, a band-stop filter absorption circuit, and an out-of-plane stripline, the problems of large size and narrow bandwidth of the non-reflective antenna were solved, and an ultra-wide non-reflective bandwidth and high radiation efficiency dipole antenna were realized.

CN122158955APending Publication Date: 2026-06-05NANJING NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING NORMAL UNIVERSITY
Filing Date
2026-05-11
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing non-reflective antennas are large in size, have low integration density, and have narrow non-reflective bandwidth, resulting in high structural complexity and increased integration difficulty.

Method used

The design employs a first dipole arm, a second dipole arm, a band-stop filter absorption circuit, a non-plane stripline, and a dielectric substrate. By combining inductors, capacitors, and resistors in parallel and series, an ultra-wide non-reflection bandwidth is achieved. Non-plane parallel striplines and baluns are used for power conversion, and metallized vias are combined to form a good absorption load.

Benefits of technology

Without increasing the antenna size, an ultra-wide anti-reflection bandwidth was achieved, covering approximately 5.7 times the center operating frequency from DC, with a radiation efficiency of over 80%. The structure is simple and the performance is excellent.

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Abstract

The application discloses an ultra-wide non-reflection frequency band absorption type dipole antenna and a modulation method thereof. The ultra-wide non-reflection frequency band absorption type dipole antenna comprises a first dipole arm, a second dipole arm, a band-stop filter absorption loop, a non-planar strip line, a feed connector and a dielectric substrate. The first dipole arm and the second dipole arm are respectively arranged on opposite end surfaces of the dielectric substrate. One end of the non-planar strip line is provided with the feed connector, and the other end is connected with the first dipole arm and the second dipole arm respectively. The band-stop filter absorption loop is arranged on the same end surface of the dielectric substrate as the second dipole arm. One end of the band-stop filter absorption loop is connected with the first dipole arm, and the other end is connected with the second dipole arm. The application can not only realize the non-reflection performance, but also has the ultra-wide non-reflection frequency band width, the extremely high structure integration and the good radiation performance, and can be well applied to the field of wireless communication systems.
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