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Realizing multi-attenuation band ultra-wideband aerial based on three stage type step electric impedance resonator

A technology of ultra-wideband antenna and ladder impedance, which is applied in the field of comprehensive design of multi-stop band filters and ultra-wideband antennas, can solve the problems of not meeting ultra-wideband characteristics, reducing the working bandwidth of antennas, and failing to suppress signals, etc., to achieve convenient and highly integrated , small size, simple structure

Inactive Publication Date: 2008-08-27
SOUTHEAST UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing stopband antennas have a single stopband, which cannot suppress signals at multiple frequency points; or, the working bandwidth of antennas with two stopbands is affected and reduced, which does not meet the ultra-wideband characteristics

Method used

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  • Realizing multi-attenuation band ultra-wideband aerial based on three stage type step electric impedance resonator
  • Realizing multi-attenuation band ultra-wideband aerial based on three stage type step electric impedance resonator
  • Realizing multi-attenuation band ultra-wideband aerial based on three stage type step electric impedance resonator

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Embodiment 1 3

[0024] Embodiment 1 A three-segment ladder impedance resonator coupled feeder realizes a multi-stop-band ultra-wideband antenna.

[0025] The structure of the antenna is shown in Figure 1, and the unit of size is mm. The size of the substrate in this embodiment is 46×57×1. The measured antenna input voltage standing wave ratio (VSWR) and the directivity diagram results of the lower XOZ, YOZ, and XOY planes are shown in Figures 2 to 5.

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Abstract

The invention provides a multiple stop band ultra wideband antenna which is realized by a three-segment type ladder impedance resonator coupling with a feeder, consisting of a medium substrate(1) and two layers of metallic coatings which are coated on the upper and the lower surfaces of the medium substrate(1) respectively, wherein the metallic coating(2) of the lower surface is of the ground of a feeder part, and the metallic coating(3) of the upper surface comprises an antenna radiating unit(4), a feeder(5) and a three-segment type ladder impedance resonator(8), wherein the antenna radiating unit(4) which is disc-shaped; no metallic ground (2) is distributed behind the disc; the antenna radiating unit(4) adopting the structure has ultra wideband characteristics; the feeder part(5) adopts a microstrip line form, and the feeder(5), the three-segment type ladder impedance resonator(8), a ladder-formed impedance conversion line(6) and the antenna radiating unit(4) are connected in series and carry out the impedance matching by the ladder-formed impedance conversion line(6); the feeder part of the three-segment type ladder impedance resonator(8) adopts a direct angle form(7) to realize the partial coupling.

Description

technical field [0001] The invention is a technology applicable to the comprehensive design of a multi-stop band filter and an ultra-wideband (Ultra-Wideband, UWB) antenna for anti-multi-frequency signal interference. The designed antenna consists of a disk antenna and a three-step impedance resonator (Stepped Impedance Resonators SIRs) coupled feeder structure, and has an ultra-wideband antenna working bandwidth (1.7GHz-9.6GHz). Background technique [0002] With the development of communication technology, the existing frequency band resources are becoming more and more tense, especially the frequency band below 10 GHz, which is crowded with a large number of different types of communication services. There are overlapping and coverage phenomena of frequency bands among these communication services, and the resulting inter-system interference becomes an urgent problem to be solved. Among them, the UWB system that occupies almost all frequency bands below 10 GHz (for examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q13/08H01Q23/00H01P1/20
Inventor 洪伟张彦蒯振起周健义
Owner SOUTHEAST UNIV
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