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Double-log periodic antenna

A double logarithmic, antenna technology, applied to antenna supports/installation devices, antennas suitable for movable objects, combinations of antenna units with different polarization directions, etc., can solve the problem of many antenna elements, antenna processing, and assembly , antenna weight and other issues, to achieve the effect of high three-proof performance, strong resistance to mechanical environment, and reduced structural form

Inactive Publication Date: 2017-07-04
36TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the integrated design makes the antenna have high mechanical properties and good electrical properties, but due to the large number of antenna elements, the weight of the antenna is heavier than that of the single logarithmic periodic antenna, and the complex structure causes serious damage to the processing and assembly of the antenna. many inconveniences

Method used

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Examples

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Embodiment

[0112] figure 1 A pair of logarithmic periodic antennas shown, the size is about 2.5m (length) × 1.84m (width) × 2.42m (height), the longest vibrator size is about 1.84m×1.84m, the longest vibrator is about 0.5m, composed of support column 1, assembly line 2, and detachable vibrator 3.

[0113] figure 2 The antenna supporting column shown has a height of about 1.5m and is composed of a flange 4, a bushing 5, a support rod 6, a hoop 7, an adapter 8 and an upper support plate 9. The height selection of the support column is related to the length of the longest vibrator of the antenna. On the one hand, it is necessary to ensure that the longest vibrator has a certain distance from the ground, and on the other hand, the mechanical requirements of the support column under strong wind load must also be considered. The height of the support column may be 1.5m-1.8m.

[0114] The support rod 6 is made of non-metallic epoxy glass fiber reinforced plastic with an outer diameter of 82...

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Abstract

The invention relates to a double-log periodic antenna. The antenna is the double-log periodic antenna which is applicable to a severe environment and conforms to demands such as disassembly. A cross structure form is employed, two single-log periodic antennas are integrated to form the double-log periodic antenna, and the requirement of the antenna on horizontal polarization and vertical polarization is achieved. With a reasonable structural form, transportation and installation are facilitated, a severe environment condition can also be met, the double-log periodic antenna can be applicable to application demands of various special occasions, and the system performance can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of communication antennas, in particular to a double logarithmic periodic antenna with detachable part of the vibrator and simultaneously with horizontal polarization and vertical polarization. Background technique [0002] The ultra-wideband characteristics of the log-periodic antenna make it widely used in the fields of short-wave, ultra-short-wave, and microwave communications. Its main structural feature is that it is composed of an assembly line as a transmission line and multiple pairs of radiation oscillators symmetrically installed on the assembly line. The external dimensions of the antenna are related to its working frequency band, and the dimensions in the axial direction of the assembly line and the axial direction of the vibrator are relatively large. Usually, the maximum dimension in the axial direction of the vibrator is about half a wavelength of the lowest operating frequency of the antenna...

Claims

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Application Information

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IPC IPC(8): H01Q1/12H01Q21/24H01Q1/32H01Q1/34
Inventor 唐兵贺献武王忍
Owner 36TH RES INST OF CETC
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