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

An ultra-wideband and band-rejection technology, applied in the field of ultra-wideband band-rejection antennas based on EBG structures, can solve problems such as unfavorable system integration, difficulty in adjusting the center frequency of the stopband, and large antenna size, and achieve low cost, compact structure, and easy processing convenient 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 band-stop antenna based on electromagnetic band gap (EBG) structure
  • Ultra wide band band-stop antenna based on electromagnetic band gap (EBG) structure
  • Ultra wide band band-stop antenna based on electromagnetic band gap (EBG) structure

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Embodiment Construction

[0023] The invention designs an ultra-wideband band-stop 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 ultra-broadband bandstop antenna based on EBG structure of the present invention, the radiation unit (101) on the dielectric substrate, impedance matching input microstrip line (102), Sierpinski triangular fractal structure (106), cross type EBG The electromagnetic 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.

[0...

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Abstract

An ultra wide band (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 Sierpinski triangular 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 an ultra-wide band band-stop antenna, in particular to an ultra-wide band 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 U.S. 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 same-channel interference has become an important content of ultra-wideband research, so ultra-wideband antennas with stop-band characteristics have high practical value. [0004] In recent years, there have been many des...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/52
Inventor 郝术苗孟祥余高爽
Owner HARBIN HESON SCI & TECH