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Spiral composite antenna for UHF communication

A compound antenna and helical antenna technology, applied in the field of helical antenna structure, can solve the problems that the height size cannot be greater than 0.2λ, and cannot meet the requirements of the low-size use environment, so as to achieve the effect of reducing the height of the antenna

Pending Publication Date: 2022-08-05
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the vehicle-mounted UHF communication antenna is working, it is required to radiate in the upper half space of the antenna. Considering the movement of the vehicle, it needs to be as low as possible. The height of the structure size generally exceeds 0.3λ, which cannot meet the requirements of the low-size use environment

Method used

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  • Spiral composite antenna for UHF communication
  • Spiral composite antenna for UHF communication
  • Spiral composite antenna for UHF communication

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Embodiment Construction

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0023] It should be noted that in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be const...

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Abstract

The invention discloses a spiral composite antenna for UHF communication, which comprises a UHF frequency range spiral antenna, a matching feed circuit and an antenna housing, the antenna housing is of a hemispherical structure and is hollow inside, one side of the antenna housing is open, the UHF frequency range spiral antenna comprises four metal wires, and the metal wires are connected with the matching feed circuit. The matching feed circuit comprises a PCB matching circuit board fixed to the top of the interior of the antenna housing and a 90-degree phase shift power divider fixed to the PCB matching circuit board, the heads of the four metal wires are connected with the PCB matching circuit board so as to receive current emitted by the PCB matching circuit board, and the four metal wires are wound on the inner side of the antenna housing at equal intervals or gradually-changed intervals. The number of winding turns of the four metal wires is larger than two. According to the spiral composite antenna for UHF communication, the antenna and the antenna housing are integrated and shared, the antenna is integrated in the hemispherical antenna housing, integration of the antenna is achieved, the installation space is effectively saved, and the arrangement requirement of a small-size space is met.

Description

technical field [0001] The present invention relates to the field of helical antenna structures, in particular to a helical composite antenna for UHF communication. Background technique [0002] Due to the low frequency, the UHF antenna has a large size and is difficult to integrate and share with other antennas. For this reason, the UHF antenna adopts the form of a spiral structure, and the low-space occupancy design of the antenna is realized through the integrated and shared design with the radome to meet the integration requirements. layout requirements. [0003] The vehicle-mounted UHF communication antenna requires radiation in the upper half of the antenna. Considering the movement of the vehicle, the height should be as low as possible. The height of the structure size generally exceeds 0.3λ, which cannot meet the requirements of the low-size use environment. SUMMARY OF THE INVENTION [0004] The main purpose of the present invention is to provide a helical compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q1/42H01Q5/20H01P5/12
CPCH01Q1/362H01Q1/50H01Q1/42H01Q5/20H01P5/12
Inventor 柳惠平余雪里张昱周帼红
Owner WUHAN INSTITUTE OF TECHNOLOGY
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