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UWB (Ultra-wideband) band-notch antenna with steep stop band

An ultra-broadband and steep technology, applied in the direction of antenna, antenna coupling, and radiation element structure, can solve the problems of large antenna volume, unfavorable system integration, and difficult adjustment of the center frequency of the stop band, and achieve low cost, convenient processing, and structural compact effect

Inactive Publication Date: 2015-06-03
HARBIN HESON SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have limitations, such as the large size of the antenna, which is not conducive to system integration; the center frequency of the stop band is not easy to adjust

Method used

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  • UWB (Ultra-wideband) band-notch antenna with steep stop band
  • UWB (Ultra-wideband) band-notch antenna with steep stop band
  • UWB (Ultra-wideband) band-notch antenna with steep stop band

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Embodiment Construction

[0025] The invention designs an ultra-wideband band-stop antenna with a steep stop band, and the filter can suppress mutual interference between a UWB system and an RFID system.

[0026] Below in conjunction with accompanying drawing, invention is described in more detail:

[0027] Such as figure 1 As shown, the ultra-wideband bandstop antenna with a steep stopband of the present invention, the radiation unit (101) on the dielectric substrate, the impedance matching input microstrip line (102), and the cross-shaped EBG electromagnetic bandgap structure (103), adopt copper Material.

[0028] Such as figure 1 As shown, the stopband attenuation suppression is improved by etching the fractal structure (106) in a square.

[0029] An example of the present invention is figure 2 As shown, the dielectric substrate (105) is a GML1000 material with a dielectric constant of 3.2. The dielectric substrate has a thickness of 0.762 mm. The metal grounding plate (104) under the dielect...

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Abstract

The invention discloses a UWB (ultra-wideband) band-notch antenna with a steep stop band and relates to a UWB band-notch antenna. The UWB band-notch antenna comprises a dielectric substrate (105), a radiating element (101), a square etching fractal structure (106), an impedance matching input microstrip line (102) and a cross type EBG (Electromagnetic Band Gap) structure (103) which are arranged on the dielectric substrate, and a metal ground plate (104) which is arranged under the dielectric substrate. According to the UWB band-notch antenna, the pass band width, which conforms to UWB requirements, is implemented through the radiating element, the impedance matching input microstrip line and the metal ground plate, and the steep stop band is formed by utilizing the cross type EBG structure (103) and the square etching fractal structure on the radiating element. The stop band of the antenna related by the invention is close to 6.8 Ghz, so that the mutual interference with an RFID (Radio Frequency Identification Device) system (6.8 Ghz) is avoided.

Description

technical field [0001] The invention relates to an ultra-wideband band-stop antenna, in particular to an ultra-wide band band-stop antenna with a steep stop band, which can suppress the mutual interference between an ultra-wide band system and an RFID system. Background technique [0002] In February 2002, the US Federal Communications Commission (FCC) approved the 3.1-10.6GHz frequency band for commercial communications, so UWB is widely used. [0003] However, due to the wide frequency band covered by UWB communication, some frequency bands share frequency band resources with other wireless systems, and may interfere with other systems, such as Wimax system (3.2-3.5GHz), WLAN system (5.15-5.35GHz), ( 5.725-5.825GHz) and RFID systems (6.8GHz). How to solve co-channel interference has become an important content of UWB research, so ultra-wideband antennas with stopband characteristics have high practical value. [0004] In recent years, there have been many design ideas fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/52H01Q13/08
Inventor 喻人杰苏畅汪小君
Owner HARBIN HESON SCI & TECH
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