A vivaldi antenna and a dual-polarized probe

An antenna and antenna radiation technology, which is applied in the direction of antenna, antenna grounding switch structure connection, independent non-interaction antenna combination, etc., can solve high-frequency cross-polarization level difference, low port coupling isolation, and difficult design, etc. problem, to achieve the effect of increased antenna gain, stable antenna pattern, and improved low-end standing waves

Inactive Publication Date: 2019-04-05
GUANGDONG MIKWAVE COMM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve these characteristics, the design of this type of probe is difficult and costly, and the high-frequency cross-polarization level of the current probe antenna is poor, and the port coupling isolation is low

Method used

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  • A vivaldi antenna and a dual-polarized probe
  • A vivaldi antenna and a dual-polarized probe
  • A vivaldi antenna and a dual-polarized probe

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036] Please refer to Figure 1 to Figure 3c , the present invention relates to a Vivaldi antenna, comprising upper, middle and lower metal layers and a dielectric plate (not shown in the figure) sandwiched between two adjacent metal layers, that is, two dielectric plates are provided, and at the same time, A vivaldi antenna radiation structure 3 is formed on the upper and lower metal layers, and a feeding structure 4 is formed on the middle metal layer and is electrically connected to the vivaldi antenna radiation structure 3 on the up...

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Abstract

The invention provides a vivaldi antenna and a dual-polarized probe, which solves the problems of poor high-frequency cross-polarized levels and low port coupling isolation of existing probe antennas.The technical points are that the vivaldi antenna comprises three metal layers and dielectric plates arranged between each two adjacent metal layer; the intermediate metal layer is provided with a feeding structure, and the other two metal layers are provided with vivaldi antenna radiation structures electrically connected to the feeding structure; and the two vivaldi antenna radiation structuresare symmetric along the center line of the antenna to realize the double-grooved vitaldi structure, which effectively improves low-end standing waves, so that the antenna has a good high-frequency cross-polarization level and has a relatively high isolation degree. Meanwhile, by arranging a clamping groove in the center line position of each antenna, the orthogonal connection of two vivodi antennas can be realized by using the clamping grooves to form a dual-polarized probe, and the vivaldi structures are respectively arranged on the two sides of each clamping groove to avoid destroying the circular back cavities of the vitaldi structures. The phase centers of the two antennas of the probe can be aligned without destroying the circular slit back cavities of the vitaldi structures.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a vivaldi antenna and a dual-polarization probe. Background technique [0002] The near-field measurement method is an important means of antenna measurement, it can obtain the far-field performance parameters of the antenna in a short distance, and it is an important method for the antenna radiation characteristic test. In the design process of the near-field test system, the probe has a great influence on the electrical performance of the near-field test system. The far-field radiation pattern of the probe in the near-field test system needs to have good axisymmetric characteristics within the irradiation angle range, and the E-plane and H-plane of the pattern should be as flat as possible and have low cross-polarization. At present, the dual-polarization measurement in the near-field measurement system is mainly implemented in two ways: one is to use the mechanical rotation of the sin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q21/24H01Q21/28H01Q23/00
CPCH01Q1/38H01Q1/50H01Q21/24H01Q21/28H01Q23/00
Inventor 苏道一
Owner GUANGDONG MIKWAVE COMM TECH
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