A flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches

A microstrip antenna and hexagonal technology, applied in the field of multi-frequency microstrip antennas with flower-shaped feed terminals, can solve the problems of complex antenna structure and difficult design, and achieve optimal impedance matching, improved impedance matching, and increased impedance bandwidth. Effect

Pending Publication Date: 2019-01-15
JINLIN MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ratio of the two resonant frequencies of the dual-band microstrip antenna is less than three-half, which can expand the frequency band of the antenna. The common method is to load a circular, U-shaped or rectangular slot on the radiation patch, but this method is difficult to design. The structure of the antenna is more complex

Method used

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  • A flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches
  • A flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches
  • A flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches

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Embodiment 1

[0033] Embodiment 1: The specific manufacturing process is as described in the embodiment. Choose FR4 epoxy resin dielectric substrate, dielectric constant ε r =4.4, thickness h=1.6mm, thickness of metal layer is 0.04mm, coaxial joint adopts standard SMA joint. The length L of the dielectric substrate is 30 mm, and the width W is 30 mm. The center of the flower-shaped feed terminal (2) loaded with hexagonal parasitic branches is located at O 2 Office, O 2 Distance L to the bottom of the dielectric substrate (1) 1 +L 2 18mm, the flower center is a slotted regular hexagonal ring, and the outer radius R of the slotted regular hexagonal ring 1 2.8mm, inner radius R 2 1.5mm, the width W of the rectangular slot on the upper side of the slotted regular hexagonal ring 5 0.5mm, the width of the lower rectangular groove W 3 is 1.2mm, the radius R of the regular hexagonal monopole 3 is 1mm, the center of the regular hexagonal monopole is located at O 4 , with the center of the ...

Embodiment 2

[0040] Embodiment 2: The specific manufacturing process is as described in the embodiment. Choose FR4 epoxy resin dielectric substrate, dielectric constant ε r =4.4, thickness h=1.6mm, thickness of metal layer is 0.04mm, coaxial joint adopts standard SMA joint. The length L of the dielectric substrate is 38 mm, and the width W is 38 mm. The center of the flower-shaped feed terminal (2) loaded with hexagonal parasitic branches is located at O 2 Office, O 2 Distance L to the bottom of the dielectric substrate (1) 1 +L 2 is 22mm, the flower center is a slotted regular hexagonal ring, and the outer radius R of the slotted regular hexagonal ring 1 5mm, inner radius R 2 3.7mm, the width W of the rectangular slot on the upper side of the slotted regular hexagonal ring 5 0.5mm, the width of the lower rectangular groove W 3 is 1.2mm, the radius R of the regular hexagonal monopole 3 is 1.4mm, the center of the regular hexagonal monopole is located at O 4 , with the center of t...

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Abstract

The invention discloses a flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches, comprises a dielectric substrate, a flower-shaped feed terminal printed on the front surface of the dielectric substrate and loaded with hexagonal parasitic branches, a slotted microstrip feed line with a combined structure, a polygonal radiation gap floor printed on the back surface of the dielectric substrate and an external coaxial joint. By loading hexagonal parasitic branches to extend the current path around the hexagonal monopole, the resonant frequency in low frequency band is reduced. Polygonal radiation slots generate radial current paths that excite the flower-shaped feed terminals loaded with hexagonal parasitic branches to generate multiple resonant frequencies. Four rectangular slots are added to the four corners of the polygonal radial slot floor to increase the floor surface current path, adjust the resonant frequency of the antenna in the high frequency band and expand the bandwidth. The flower-shaped feed terminal multi-frequency microstrip antenna can meet the bandwidth requirements of different frequency bands by changing the antennasize, and is suitable for small multi-band wireless communication systems of WLAN and WiMAX frequency bands.

Description

technical field [0001] The invention relates to the technical field of wireless communication antennas, in particular to a flower-shaped feed terminal multi-frequency microstrip antenna loaded with hexagonal parasitic branches, which is suitable for small multi-frequency wireless communication systems in WiMAX and WLAN frequency bands. Background technique [0002] With the rapid development of radio frequency identification, mobile devices, wireless networks, satellite communications and intelligent communication equipment, the role of antennas as the core of transmitting and receiving signals in wireless communication systems is prominent, which requires more and more miniaturization and integration of antennas. The more stringent, the antenna is required to be able to suppress signal interference in adjacent frequency bands, and to have dual-band or multi-band characteristics. The microstrip antenna is small in size, light in weight, easy to integrate with the RF front-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q5/10H01Q5/20H01Q5/307
CPCH01Q1/38H01Q1/48H01Q1/50H01Q5/10H01Q5/20H01Q5/307
Inventor 欧仁侠张华磊祝颖鲍捷陈洪斌
Owner JINLIN MEDICAL COLLEGE
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