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Log-periodic antenna with telescopic device

A logarithmic period antenna, telescopic technology, applied in the field of communication, can solve the problem of low automation of the number period antenna, achieve high stability performance, change the height range, and improve the effect of work performance

Inactive Publication Date: 2017-10-20
成都凯旋兰达电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the automation degree of the existing logarithmic periodic antenna is not high, and the purpose is to provide a logarithmic periodic antenna with a telescopic device, so that the logarithmic periodic antenna can automatically turn and improve the degree of automation

Method used

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  • Log-periodic antenna with telescopic device
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Embodiment

[0022] Such as figure 1 with figure 2 As shown, the logarithmic periodic antenna with a telescopic device includes an upper supporting column 2, an upper steering device 3, a rotating shaft 4, a lower steering device 5, a lower connecting column 6 and a supporting column 9 connected sequentially from top to bottom. An antenna sleeve 1 is arranged on the upper part of the upper support column 2, and the antenna sleeve 1 is cylindrical, and the antenna sleeve 1 is provided with a cross bar 10, and the cross bar 10 is provided with a plurality of antenna units 9; The upper and lower ends of the rotating shaft 4 are respectively embedded in the inner sides of the upper steering device 3 and the lower steering device 5; the lower connecting column 6 and the pillar 8 are connected by the mounting thread 7; the lower side of the pillar 8 is provided with a lifting frame 13, and the lifting The frame 13 is formed by interweaving steel columns; the upper side of the lifting frame 13 ...

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PUM

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Abstract

The invention discloses a log-periodic antenna with a telescopic device, which comprises an upper supporting column, an upper steering device, a rotation shaft, a lower steering device, a lower connection column and a pillar connected sequentially from top to bottom, wherein the upper part of the upper supporting column is provided with an antenna sleeve; the antenna sleeve is tubular; a transverse rod is arranged on the antenna sleeve; the transverse rod is vertical to the axis of the upper supporting column; the transverse rod is provided with a plurality of antenna units; the upper end and the lower end of the rotation shaft are embedded inside the upper steering device and the lower steering device respectively; and the lower connection column and the pillar are connected through mounting thread. The upper steering device is arranged to rotate around the rotation shaft, rotation around the rotation shaft in a condition of no external force driving can be realized, and the problems that the log-periodic antenna in the prior art fixedly points to a certain direction, when steering is needed, manual rotation is required, and the automatic degree is not high can be solved.

Description

technical field [0001] The invention relates to the communication field, in particular to a logarithmic periodic antenna with a retractable device. Background technique [0002] A log-periodic antenna is an antenna formed with a log-periodic structure. A log-periodic structure is a system composed of many units of different sizes but similar shapes. If the geometric shape of two antennas is similar, but the size differs by τ times, when the operating frequency also differs by τ times and their radiation resistance is much greater than the loss resistance, then the electrical parameters of the two antennas are the same, which is the principle of similarity. According to this principle, the electrical parameters such as input impedance and directivity of the logarithmic periodic antenna should be periodically repeated according to the logarithm of the frequency, and the repetition period is lnτ. In the frequency band (f, τf) range, the electrical parameters of the antenna ch...

Claims

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Application Information

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IPC IPC(8): H01Q1/12H01Q3/08
CPCH01Q1/12H01Q3/08
Inventor 杨军闯
Owner 成都凯旋兰达电子科技有限公司