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

An ultra-wideband and steep technology, which is applied to slot antennas, radiating element structures, circuits, etc., can solve the problems of large antenna volume, unfavorable system integration, and difficulty in adjusting the center frequency of the stopband, and achieves low cost, convenient processing, and structure. compact effect

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

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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 wide band) band-notch antenna with steep stop band
  • UWB (Ultra wide band) band-notch antenna with steep stop band
  • UWB (Ultra wide band) 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 antenna can suppress mutual interference between a UWB system and a WLAN system.

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

[0027] like figure 1 As shown, an ultra-wideband bandstop antenna with a steep stopband of the present invention, a radiation unit (101) on a dielectric substrate, an impedance matching input microstrip line (102), a broken-line EBG electromagnetic bandgap structure (103), and a square The fractal structure (106) is etched using a copper material.

[0028] like figure 1 As shown, the stopband attenuation suppression is improved by the square etched fractal structure (106).

[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 had a thickness of 0.762 mm. The metal grounding p...

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Abstract

The invention provides a UWB (ultra wide band) band-notch antenna with a steep stop band, and relates to a UWB band-notch antenna. The antenna is composed of a dielectric substrate (105), a radiating element (101) arranged on the dielectric substrate, a square etching fractal structure (106), an impedance matching input microstrip line (102), a fold line type EBG (Electromagnetic Band Gap) structure (103) and a metal grounding plate (104) below the dielectric substrate. The UWB band-notch antenna with the steep stop band disclosed by the invention realizes the bandpass width required by UWB by using the radiating element, the impedance matching input microstrip line and the metal grounding plate, and forms the steep stop band by using the fold line type EBG structure and the square etching fractal structure on the radiating element. The antenna stop band that the invention relates to is near 5.2 GHz, which avoids the mutual interference with a WLAN (Wireless Local Area Network) system (5.15-5.35 GHz).

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 mutual interference between an ultra-wide band system and a WLAN 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 for UWB...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q1/38
Inventor 喻人杰李琦苏畅
Owner HARBIN HESON SCI & TECH
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