Self-feed four-arm helical gps satellite signal receiving antenna

A satellite signal and receiving antenna technology, applied in the direction of helical antenna, resonant antenna, non-resonant long antenna, etc., can solve the problems of multiple application of components, complex structure, and reduced reliability of the antenna, and achieve high wave transmission rate and volume Small, high-performance effect

Inactive Publication Date: 2011-07-13
BEIJING INST OF SPACECRAFT SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve circular polarization, the traditional four-arm helical antenna includes a 90° phase-shifting network, which has a complex structure and many components are used, which reduces the reliability of the antenna

Method used

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  • Self-feed four-arm helical gps satellite signal receiving antenna
  • Self-feed four-arm helical gps satellite signal receiving antenna
  • Self-feed four-arm helical gps satellite signal receiving antenna

Examples

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specific Embodiment

[0037] 1. Self-feed phase design

[0038] Considering the requirements of compact structure, simple composition and high reliability, a self-feed phase scheme is adopted for the GPS satellite signal receiving antenna, and the quadrifilar helical antenna and phase shifter are integrated, which reduces components, simplifies the system, and improves reliability. sex.

[0039] The feed design of the GPS satellite signal receiving antenna body adopts a 50-ohm coaxial system, and adopts a λ / 4 slotted feed method (silver feed). The impedance matching in the feed pipe 6 is realized by λ / 4 impedance transformation, and the radio frequency interface of the antenna adopts SMA (Female).

[0040]In the process of realizing the self-feeding phase principle of the antenna, the main radiation structure—two pairs of helixes adopt the same axis length of 54 mm. According to the above-mentioned principle, the helix diameters of the two pairs of helixes are adjusted. The helix diameters of the ...

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PUM

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Abstract

The invention discloses a self-feeding four-arm spiral GPS satellite signal receiving antenna, which comprises: a feeding rod, a socket, a dielectric sleeve, a mounting flange, a feeding pipe, a helical wire, an inner conductor; two ends of the helical wire and the feeding pipe Welded together; the rear end of the feed pipe is inserted into the round hole of the mounting flange; the inner conductor located in the center of the feed pipe, the left end is welded on the feed pipe, and the right end is connected to the feed rod through threads; the feed rod rests on the medium in the socket The sleeve is fixed in the socket; the socket is the feed port of the antenna, and the high-frequency cable is connected to feed the antenna. The invention simplifies the system structure and improves the system reliability.

Description

technical field [0001] The invention relates to a spacecraft antenna, in particular to a self-feeding four-arm helical GPS satellite signal receiving antenna. Background technique [0002] Global Positioning System (GPS) satellites provide global, all-weather, continuous, real-time three-dimensional navigation and precise positioning and timing capabilities for static and dynamic users on land, sea and space. With the completion of the GPS constellation network, GPS is currently the best navigation and positioning system. There have been many successful examples of GPS positioning applied to the autonomous positioning of spacecraft, mainly for positioning, speed measurement, and timing. With the complete deployment of the GPS system and the popularization of GPS applications by spacecraft, the benefits of using GPS navigation and positioning by spacecraft are becoming more and more obvious, and the application of GPS navigation and positioning in low orbits has become matur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q9/04H01Q11/08H01Q1/36
Inventor 叶云裳杨小勇崔莉李全明
Owner BEIJING INST OF SPACECRAFT SYST ENG
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