Miniaturized blind-area-free short-wave frame dipole antenna

Abstract

The invention discloses a miniaturized blind-area-free short-wave frame dipole antenna which is integrally of a rectangular frame structure and comprises a first foundation, a second foundation and a third foundation which are arranged side by side in a row and fixed on the ground, a second vertical support is vertically installed on the first foundation, a first vertical support is vertically installed on the second foundation, and a second vertical support is vertically installed on the third foundation. A third vertical support is vertically installed on the third foundation, the second vertical support and the third vertical support are equal in height, and the first vertical support is higher than the second vertical support and the third vertical support. The dipole antenna disclosed by the invention adopts a frame structure, is low in height, small in occupied area, simple to mount and erect, low in requirement on a mounting site, low in cost and higher in practicability, and can be widely applied to an omni-directional non-blind area receiving system with a limited mounting site.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a miniaturized non-blind-zone short-wave frame dipole antenna in the field. Background technique [0002] Shortwave communication mainly propagates in two ways: ground wave and sky wave. In short-wave ground wave communication, when the ground conductivity is low, it has a strong absorption effect on short-wave, and the absorption attenuation rate per unit distance increases with the increase of propagation distance. In the northern part of my country, the propagation of short-wave ground wave The distance is generally about 20 kilometers. In the southern region, due to more rainwater and developed water systems, the conductivity of the ground is higher, and the communication distance is slightly longer. As for sky wave propagation, the distance from the launch point to the nearest landing point of the sky wave is generally more than 120 kilometers, so that within the range...

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Problems solved by technology

[0004] On the other hand, since the physical size of the antenna is compared with the working wavelength, if the working wavelength is long, the physical size of the antenna will be too large; The working wavelength is relatively long, and the physical size and footprint of the antenna are relatively large, and its use is limited by the increasingly tight land resources

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