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Satellite communication antenna based on quadrifilar helix technology

A technology of satellite communication and four-arm helix, which is applied in the field of navigation and satellite communication, can solve the problems of limited satellite communication application, unstable phase center, poor gain directionality, etc., to improve flexibility, reduce antenna height, eliminate antenna frequency Partial effect

Pending Publication Date: 2017-02-22
SHENZHEN VLG WIRELESS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Small terminal equipment (such as mobile terminals and other handheld devices) antennas are generally made of ceramic antennas due to their low profile and easy integration. However, ceramic antennas are limited by satellite communications and high Application of precision navigation terminal

Method used

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  • Satellite communication antenna based on quadrifilar helix technology
  • Satellite communication antenna based on quadrifilar helix technology
  • Satellite communication antenna based on quadrifilar helix technology

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0027] Such as figure 1 and figure 2 As shown, this embodiment includes two parts: antenna radiation cylinder part (cylindrical substrate device) and feeding network (feeding board).

[0028] 1. Antenna radiating cylinder part

[0029] The surface of the cylindrical substrate device is provided with a metal antenna line, and the metal antenna line includes four groups of helical arms that are identical and symmetrically rotated and distributed on the side surface of the axisymmetric cylindrical substrate device, and the four groups of helical arms rotate to The top is connected by a short-circuit unit, and each group of spiral arms includes a main radiating arm, an auxiliary radiating arm and a connecting strip. The main radiating arm and the auxiliary radiating arm are parallel and keep a certain dista...

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Abstract

The invention discloses a satellite communication antenna based on a quadrifilar helix technology. The satellite communication antenna comprises a cylindrical substrate device with a cross section in a regular polygon shape, wherein a metal antenna circuit is arranged on a surface of the cylindrical substrate device and comprises four groups of spiral arms, the four groups of spiral arms are completely same and are symmetrically and rotatably arranged on a side surface of the axial symmetric cylindrical substrate device, and the four groups of spiral arms are connected by a short-circuit unit when rotating to a top end. With the adoption of a polygonal prism, on one hand, the aperture and the size of a quadrifilar helix antenna are reduced, reliable and stable circular polarization characteristic of the antenna in a working frequency is ensured, and the appearance design flexibility is greatly improved on the basis of ensuring the standard antenna performance; and on the other hand, the short-circuit unit is loaded at the top, a short-circuit point is arranged at a connection part of a lower end, thus, the input impedance is improved, the impedance mismatching caused by excessively small impedance is improved, and the radiation efficiency and the grain of the antenna are improved. The quadrifilar helix technology can be widely applied to various satellite communication antennas.

Description

technical field [0001] The invention relates to the technical fields of satellite communication and navigation, in particular to a satellite communication antenna applied to miniaturized terminal equipment. Background technique [0002] Quadrifilar Helix Antenna: Quadrifilar Helix Antenna, an antenna generally composed of four metal lines bent according to specific rules on a cylindrical substrate. [0003] LDS: Laser-Direct-structuring, laser direct structuring technology, uses the computer to control the movement of the laser according to the trajectory of the conductive pattern, projects the laser onto the molded three-dimensional plastic device, and activates the circuit within a few seconds pattern. [0004] Satellite mobile communication is a communication method that uses geostationary orbit satellites or medium and low orbit satellites as relay stations to realize regional and even global communication. It generally consists of three parts: satellites, ground stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50
Inventor 王莉娜邓文雄朱寒生张雨
Owner SHENZHEN VLG WIRELESS TECH
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