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Quadrifilar helix antenna with resonant top end

A four-arm helix and antenna technology, applied in the field of satellite navigation antennas, can solve the problems of the four-arm helix antenna with small gain, difficulty in meeting large impacts, and poor signal reception effect, and achieve improved main beam gain, low electromagnetic loss, and working bandwidth wide effect

Active Publication Date: 2014-07-09
BEIJING AUTOMATION CONTROL EQUIP INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problems to be solved in the present invention are: the existing four-arm helical antenna has small gain and poor signal reception effect; the structure is not firm, and it is difficult to meet the working requirements such as large impact, large overload, and high-speed rotation when loaded on the warhead

Method used

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  • Quadrifilar helix antenna with resonant top end
  • Quadrifilar helix antenna with resonant top end
  • Quadrifilar helix antenna with resonant top end

Examples

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Embodiment Construction

[0042] The tip resonant quadrifilar helical antenna of the present invention will be described in detail below with reference to the drawings and embodiments.

[0043] Such as Figure 1 ~ Figure 3 As shown, a top-resonant quadrifilar helical antenna includes an antenna main radiator 1, an antenna feeder network 2, and a structure main body 3 from top to bottom: the lower end of the antenna main radiator 1 contacts and installs an antenna feeder network 2 to form a contact feed, The structural main body 3 is used to support and fix the antenna main radiator 1 and the antenna feeder network 2 above it.

[0044] The main radiator 1 of the antenna is made of metal, and is used to convert the electrical signal flowing into the main radiator from the antenna feeder network 2 into an electromagnetic field energy signal and radiate it into space (or the reverse process). The main radiator 1 of the antenna is in the shape of a four-armed spiral truncated cone, the tops are connected, ...

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Abstract

The invention belongs to the technical field of satellite navigation antennae and particularly relates to a quadrifilar helix antenna with a resonant top end. The quadrifilar helix antenna with the resonant top end comprises an antenna main radiation body, an antenna feeder network and a structure body from top to bottom. The antenna feeder network is installed at the lower end of the antenna feeder network in a contact type, so that contact type feed is formed. The structure body is used for supporting and fixing the antenna main radiation body and the antenna feeder network on the structure body. The quadrifilar helix antenna with the resonant top end has the advantages of being large in work bandwidth, high in radiation efficiency, high in polarization purity, large in beam width, stable in phase center, narrow in near-field range and the like. Compared with a traditional quadrifilar helix navigation antenna, the quadrifilar helix antenna has the advantages of being high in gain, firm in structure, easy to produce and machine and the like.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation antennas, and in particular relates to a top resonant four-arm helical antenna. Background technique [0002] The basic working principle of the satellite navigation antenna is to receive electromagnetic signals from multiple (not less than 4) navigation satellites in the sky at the same time, and effectively convert them into electrical signals and transmit them to the subsequent receiver system. Since the circularly polarized electromagnetic wave is incident on the target, the direction of rotation is reversed, and at the same time, the right-handed circularly polarized antenna can receive the right-handed circularly polarized wave, but cannot receive the left-handed circularly polarized wave, and vice versa. Therefore, circularly polarized antennas can suppress rain and fog interference and multipath reflections, and are widely used in mobile communications, satellite positioning a...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q1/12
Inventor 刘峥
Owner BEIJING AUTOMATION CONTROL EQUIP INST