Ultra wide band (UWB) antenna based on electromagnetic band gap (EBG) structure

An antenna and fractal structure technology, applied in the directions of antenna coupling, radiating element structure, antenna grounding switch structure connection, etc., can solve problems such as unfavorable system integration, large antenna volume, and difficulty in adjusting the center frequency of the stop band, etc. Easy processing and compact structure

Inactive Publication Date: 2017-06-20
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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  • Ultra wide band (UWB) antenna based on electromagnetic band gap (EBG) structure
  • Ultra wide band (UWB) antenna based on electromagnetic band gap (EBG) structure
  • Ultra wide band (UWB) antenna based on electromagnetic band gap (EBG) structure

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Embodiment Construction

[0023] The invention designs a UWB antenna based on an EBG structure, and the filter can avoid mutual interference with a WLAN system.

[0024] Below in conjunction with accompanying drawing, invention is described in more detail:

[0025] Such as figure 1 Shown, a kind of UWB antenna based on EBG structure of the present invention, the radiating unit (101) on the dielectric substrate, impedance matching input microstrip line (102), diamond-shaped etching fractal structure (106), rice-shaped cross type EBG circuit The bandgap structure (103), the broken-line EBG electromagnetic bandgap structure (107), adopts copper material.

[0026] 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.

[0027] The metal grounding plate (104) under the dielectric substrate is made of copper material.

[0028] Such as figure 1 As shown, the l...

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Abstract

A UWB antenna based on an EBG structure relates to a UWB band-stop antenna of which the notch frequency band is located at the WLAN and RFID frequency bands, and is composed of a dielectric substrate (105), a radiation unit (101) on the dielectric substrate, an impedance matching input microstrip line (102), an EBG structure (103) shaped like a Chinese character mi, a broken line type EBG structure (107) and a metal grounding plate (104) under the dielectric substrate. The UWB antenna based on the EBG structure of the present invention realizes the passband bandwidth required by the UWB by utilizing the radiation unit, the impedance matching input microstrip line and the metal grounding plate, utilizes the circular radiation unit with a rhombic fractal structure to improve the stop band attenuation inhibition, and utilizes the EBG structures to realize the band stop characteristic. The stop band of the antenna involved in the present invention is nearby 5.2 GHz and 6.8 GHz, thereby avoiding the mutual interference of a WLAN system and an RFID system.

Description

technical field [0001] The invention relates to a UWB bandstop antenna, in particular to a UWB antenna based on an EBG structure, which can suppress the mutual interference problem of a WLAN system (5.15-5.35GHz). 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 bandstop antennas, such as slots on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/52H01Q1/50H01Q1/38
Inventor 郝术苗高爽耿一方
Owner HARBIN HESON SCI & TECH
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