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Band-notched ultra wideband antenna

A technology with ultra-wideband antenna and notch characteristics, applied in antenna coupling, antenna grounding device, radiating element structure and other directions, which can solve problems such as endangering the normal operation of the system, mismatch between antenna and microwave circuit, complex antenna structure and process, etc. problems, to achieve the effect of reducing design cost, good omnidirectional radiation characteristics, and good trapping characteristics

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

AI Technical Summary

Problems solved by technology

[0003] However, the frequency band occupied by the current ultra-wideband communication and the wireless local area network share a part, so it is necessary to design an antenna that can reduce the interference to it. Designing an ultra-wideband antenna with notch characteristics has become a current research hotspot.
If there is no proper design to suppress harmonic resonance and spurious emission, the antenna will cause electromagnetic interference to nearby equipment, endangering the normal operation of the system itself and adjacent systems, especially causing interference to the currently used LAN system
Adding a filter is the most commonly used method to solve this kind of problem, but it often causes a mismatch between the antenna and the microwave circuit, and even reduces the overall performance of the system. Therefore, designing an ultra-wideband antenna with notch characteristics is the best way to solve this problem. One of the important methods, while solving the current complex problems of the structure and technology of the antenna

Method used

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Embodiment 1

[0021] Such as figure 1 with figure 2 As shown, the notch characteristic ultra-wideband antenna consists of: a dielectric substrate (1), a radiation unit (2), a signal feeder strip line (3), and a SIR-DGS structure slot (4) on the radiation unit. The radiating unit and the signal feeder strip line are printed on the upper surface of the dielectric substrate, the radiating unit is located in the middle of the dielectric substrate, the feeder leads from the edge of the dielectric substrate to the radiating unit and is connected to it, and the ground plane is printed on the dielectric substrate. the lower surface of the substrate.

[0022] The dielectric substrate is made of polytetrafluoroethylene with a thickness of 1.6 mm and a relative dielectric constant of 4.4.

[0023] The characteristic impedance of the coplanar waveguide feeding stripline is 50Ω, and the line width is 3.3mm.

[0024] figure 2 It is a schematic diagram of the ground plane of the present invention. ...

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Abstract

The invention discloses a band-notched ultra wideband antenna, which consists of a medium substrate (1), a radiation unit (2) and a signal feed band wire (3); an SIR-DGS structure slot (4) is formed in the radiation unit. The radiation unit and the signal feed band wire are printed on the upper surface of the medium substrate, the radiation unit is positioned in the middle of the medium substrate; a feeder is led to the radiation unit from the edge of the medium substrate and is connected with the medium substrate; a grounding surface is printed at the lower surface of the medium substrate. The band-notched ultra wideband antenna is compact in structure and small in size, band-notched frequency can be adjusted by changing the size and position of the SIR-DGS structure slot, and the problem of same frequency interference of an ultra wideband communication system is solved.

Description

technical field [0001] The invention designs an antenna, and in particular relates to an ultra-wideband antenna with notch characteristics. Background technique [0002] Since the US Federal Communications Commission (Federal Communications Commission) allowed the commercial use of the 3.1-10.6GHz frequency band, ultra-wideband technology has received wider attention in the academic and commercial fields. The coplanar waveguide structure that does not require drilling and is easy to integrate is changing day by day, and the structure can be fabricated by photographic technology and has good polarization characteristics, so this technology has been applied to the design of ultra-wideband antennas and related microwave circuit components in the design. [0003] However, the frequency band occupied by the current ultra-wideband communication and the wireless local area network share a part, so it is necessary to design an antenna that can reduce the interference to it. Designi...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/52
Inventor 李琦张谢馥喻人杰
Owner HARBIN HESON SCI & TECH
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