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Airborne Low Profile UHF Panel Array Antenna

An array antenna and ultra-high frequency technology, which is applied in the field of airborne low-profile ultra-high frequency flat panel array antennas, can solve problems such as narrow bandwidth, and achieve the effects of light weight, low profile, and reduced profile height.

Active Publication Date: 2022-06-24
NANJING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, monopoles require a quarter-wavelength height and have a narrow bandwidth

Method used

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  • Airborne Low Profile UHF Panel Array Antenna
  • Airborne Low Profile UHF Panel Array Antenna
  • Airborne Low Profile UHF Panel Array Antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] combine Figures 1 to 3, The present invention is based on the design of the flat panel antenna, and designs an airborne low-profile UHF flat panel array antenna working in the frequency band of 380MHz to 440MHz, the maximum scanning angle can reach ±45°, the polarization mode is circular polarization, and the unit gain In the pitch angle of -45°~45°, the azimuth angle of 0°~360° (the angle between the plane where the antenna is located), the gain Gain ≥ -3dB.

[0050] The unit structure is mechanically processed, and the metal grooves and threads are milled by a milling machine, the processing technology is simple and the cost is low, and the mechanical strength of the antenna is high.

[0051] Figures 4 to 7 The simulation and actual measurement results of the low-profile panel antenna are given. Due to the large number of array ports, only one row is shown. It can be seen from the figure that the axial ratio of the antenna unit in the frequency band of 385MHz to 42...

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Abstract

The invention discloses an airborne low-profile ultra-high frequency panel array antenna, which comprises a radiator panel, a short-circuit arm, a rectangular ferrite, a dielectric block pillar, a dielectric nail, an SMA feed connector and a metal floor; the radiator panel is placed on Above the metal floor; the short-circuit arm is placed at the edge of one side of the radiator plate; the metal floor has a groove dug at the position of the short-circuit arm to fix the short-circuit arm; the rectangular ferrite is placed on the same side of the short-circuit arm, parallel to the short-circuit arm; The dielectric block pillar is placed between the radiator plate and the metal floor, fixed by dielectric nails, and used to support the radiator plate; the SMA feed connector is placed on the side of the radiator plate opposite to the short-circuit arm, and is used for feeding the antenna. Compared with traditional circularly polarized antennas, the present invention loads ferrite loads and short-circuit walls to reduce profile height and achieve good impedance matching; the present invention has stable beam width and gain, compared with metamaterial antennas The advantages of low cost, light weight, and strong stability can be mass-produced.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an airborne low-profile ultra-high frequency flat panel array antenna. Background technique [0002] The current existing antennas all work based on the principle of electromagnetic resonance, and their size depends on the wavelength of the required electromagnetic waves. The typical antenna size is generally greater than λ / 10. Especially in the VHF (30 ~ 300MHz) and UHF (0.3 ~ 3GHz) frequency bands, the electromagnetic wave wavelength λ is very large, and the monopole antenna may be the most commonly used communication for VHF / UHF. However, monopoles require a quarter wavelength in height and have a narrow bandwidth. Now the antenna can be loaded with technology, the physical size of the antenna can be reduced to a certain extent while the antenna is maintained at the lowest frequency. [0003] In addition, ferrite material, as one of the magnetic materials, has a much larger...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q1/12
CPCH01Q1/36H01Q1/48H01Q1/50H01Q1/12
Inventor 丁大志王池陈如山樊振宏汪伟陈明
Owner NANJING UNIV OF SCI & TECH
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