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L-band broadband dual-polarized electromagnetic dipole antenna

An electromagnetic dipole, L-band technology, applied in the field of L-band broadband dual-polarized dipole antenna, can solve the problems of unstable broadside radiation pattern, complex antenna structure, insufficient impedance bandwidth, etc., and achieve polarization isolation Excellent performance, low back radiation, and stable antenna gain

Inactive Publication Date: 2017-09-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, log-periodic antennas, horn antennas and reflector antennas have been used in the communication field, but their structures are bulky and inconvenient to use; patch antennas are also widely used in modern wireless communication systems, which can provide a Unidirectional mode, its advantages are: low profile, light weight and easy manufacturing, but its impedance bandwidth is not enough
Someone proposed a cavity-backed dipole antenna, which can also solve the above problems and has wide bandwidth and good radiation pattern characteristics, but the structure of the antenna is complex, and the broadside radiation pattern is unstable

Method used

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  • L-band broadband dual-polarized electromagnetic dipole antenna
  • L-band broadband dual-polarized electromagnetic dipole antenna
  • L-band broadband dual-polarized electromagnetic dipole antenna

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Embodiment

[0031] The size and shape of the electromagnetic dipole arms of the L-band broadband dual-polarized electromagnetic dipole antenna are all the same. The width of the four parts is 15mm and the thickness is 2mm. Taking the first electromagnetic dipole arm 1 as an example, the bottom structure 1 -a is 15mm long; the vertical arm 1-b is 62mm long; the horizontal arm 1-c is 7mm long; the inclined arm 1-d is 50mm long; the ground reflection surface 5 has a radius of 120mm and a thickness of 4mm; The thickness is 1mm, and the vertical distance from the horizontal arm 1-c is 12mm; the two Γ-shaped strip feed probes are formed by bending copper strips with a thickness of 0.5mm and a width of 4mm, and the first Γ-shaped strip feed probe The length of the vertical long side of 7 is 59mm, the length of the vertical short side is 45mm, and the length of the horizontal part is 20mm; 20mm.

[0032] Model and simulate the above antenna.

[0033] Figure 5It is its S-parameter curve diagra...

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Abstract

The invention discloses an L-band broadband dual-polarized electromagnetic dipole antenna. The antenna comprises four electromagnetic dipole arms, two Gamma-shaped strip feed probes, a horizon reflecting surface, and a directing disc. The four electromagnetic dipole arms, a first Gamma-shaped strip feed probe and a second Gamma-shaped strip feed probe are disposed between the horizon reflecting surface and the directing disc. The first Gamma-shaped strip feed probe and the second Gamma-shaped strip feed probe are arranged crosswise, with the included angle being 90 degrees. The four electromagnetic dipole arms are uniformly arranged around the two Gamma-shaped strip feed probes. A first electromagnetic dipole arm and a third electromagnetic dipole arm constitute a pair of electromagnetic dipole arms. A second electromagnetic dipole arm and a fourth electromagnetic dipole arm constitute a pair of electromagnetic dipole arms. The two electromagnetic dipole arms in each pair are in the same line. The lines where the two pairs of electromagnetic dipole arms are located are perpendicular to each other. The antenna of the invention has good reception performance in a wide frequency band.

Description

technical field [0001] The invention relates to the field of antennas, in particular to an L-band broadband dual-polarized dipole antenna. Background technique [0002] With the application and development of wireless communication technology, especially the development of mobile communication and high-speed digital wireless communication, spectrum has become a very important and scarce resource. From the centimeter wave band to the millimeter wave band, many frequency bands have been developed and used in various TV systems, wireless communication and surveillance systems, such as UHF / VHF TV systems, mobile phone systems, Global Satellite Positioning System (GPS), Bluetooth, Wireless Local Area Network (WLAN) , ultra-wideband (UWB) and automatic radar, etc. Due to the increase of wireless mobile communication systems operating in different frequency bands, multiple antennas need to be installed in a building to receive signals of different wireless mobile communication sys...

Claims

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Application Information

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IPC IPC(8): H01Q5/28H01Q5/48
CPCH01Q5/28H01Q5/48
Inventor 韩玉兵仲洛清许露盛卫星
Owner NANJING UNIV OF SCI & TECH
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