Resistance-loaded ultra-wideband dual-polarized four-ridged horn antenna

A four-ridge horn and ultra-broadband technology, applied in antennas, waveguide horns, antenna supports/mounting devices, etc., can solve the problems of poor phase center stability, large size, affecting accuracy and test efficiency, and achieve stable phase Center, good matching characteristics, the effect of improving accuracy and testing efficiency

Inactive Publication Date: 2022-04-29
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the antenna can work from 2GHz to 20GHz, its size is large, and the phase center will change greatly with the change of frequency. Therefore, the stability of the phase center of this large-scale antenna is poor, which affects the near-field measurement. Accuracy and Test Efficiency

Method used

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  • Resistance-loaded ultra-wideband dual-polarized four-ridged horn antenna
  • Resistance-loaded ultra-wideband dual-polarized four-ridged horn antenna
  • Resistance-loaded ultra-wideband dual-polarized four-ridged horn antenna

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Embodiment Construction

[0029] The specific embodiments and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] refer to figure 2 , image 3 , Figure 4 and Figure 5 , this example includes a spine 1, a fixed flange 2, a circular waveguide 3, a base 4, two coaxial probes 5 and 6, where:

[0031] The ridge 1 is set to four, that is, the first ridge 11, the second ridge 12, the third ridge 13, and the fourth ridge 14. These four ridges are equally spaced along the inner side of the circular waveguide 3. Installed around the circumference to form the bell face. The bottom of these four ridges is provided with a reflection cavity 15 to filter out the excited high-order mode in the waveguide, expand the working bandwidth of the antenna, and improve the matching characteristics; the top of each ridge is fixed with a vertically downward connecting rod 7 .

[0032] The circular waveguide 3 is installed on the base 4, and t...

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Abstract

The invention discloses a resistor-loaded ultra-wideband dual-polarized four-ridge horn antenna, which comprises four ridge sheets (1), a circular waveguide (3) and two coaxial probes (5, 6), and is characterized in that the four ridge sheets are circumferentially mounted along the inner side of the circular waveguide at equal intervals to form a horn mouth surface; the circular waveguide is installed on the base (4), the two coaxial probes are inserted from the first ridge piece and the second ridge piece respectively, penetrate through the center of the circular waveguide and then stretch into the third ridge piece and the fourth ridge piece at opposite positions respectively, and orthogonally staggered placement of the two coaxial probes is formed; the upper edge of the circular waveguide is provided with a fixed flange (2), connecting blocks (9) are respectively fixed on the flange at the ridge sheet positions corresponding to the flange, each connecting block is connected with a resistor (8), and the other end of each resistor is connected with the top end of the corresponding ridge sheet through a connecting rod (7); the ridge lines of the four ridge pieces are all composed of straight line sections and curved line sections, and chamfers are formed in the whole ridge lines. The device is small in size and stable in phase center, and can be used for near-field antenna measurement.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a resistance-loaded ultra-wideband dual-polarization four-ridge horn antenna, which can be used for near-field antenna measurement. Background technique [0002] The near-field measurement method is an important means of antenna measurement. By using a probe antenna with known characteristics, the far-field performance parameters of the antenna can be obtained at a short distance. This method overcomes the limitation of the site size and improves the measurement accuracy. Therefore, has received widespread attention. [0003] The performance of the probe antenna directly affects the efficiency of near-field testing. At present, the open-ended waveguide antenna is the most commonly used probe antenna, but this type of antenna has a narrow bandwidth and works with single polarization. During the test process, the probe needs to be replaced frequently and mechanically adjusted acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02H01Q5/25H01Q5/55H01Q1/22
CPCH01Q13/0275H01Q5/25H01Q5/55H01Q1/22
Inventor 翁子彬刘向搏张立焦永昌赵钢侯鼎
Owner XIDIAN UNIV
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