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

A band-stop and antenna technology, which is applied in the field of UWB band-stop antennas based on EBG structure, can solve the problems of large antenna volume, difficult adjustment of the center frequency of the stop band, unfavorable system integration, etc., and achieves low cost, compact structure and convenient processing. Effect

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

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Embodiment Construction

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

[0024] The invention is described in more detail below in conjunction with the distances of the accompanying drawings:

[0025] like figure 1 As shown, a UWB band-stop antenna based on an EBG structure of the present invention includes a radiating element (101) on a dielectric substrate, an impedance matching input microstrip line (102), a rhombus etched fractal structure (106), a cross-type EBG The electromagnetic band gap structure (103), the zigzag EBG electromagnetic band gap structure (107), is made of 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 thickness of the dielectric substrate is 0.762 mm.

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

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Abstract

A UWB band-stop antenna based on an EBG structure relates to the 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), a crisscross EBG structure (103), a broken line type EBG structure (107) and a metal grounding plate (104) under the dielectric substrate. The UWB band-stop 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 band-stop antenna, in particular to a UWB band-stop antenna based on an EBG structure, which can suppress the mutual interference problem of a WLAN system (5.15-5.35 GHz). Background technique [0002] In February 2002, the United States 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 the co-channel interference has become an important content of UWB research, so the ultra-wideband antenna with stop-band characteristics has high practical value. [0004] In recent years, there have been many design ideas for ultra-wideband ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/52H01Q13/08
Inventor 郝术苗高爽耿一方
Owner HARBIN HESON SCI & TECH
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