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X-band wide beam circularly polarized antenna for lunar rover

A technology of circularly polarized antennas and patrolling devices, which is suitable for antennas on movable objects, leaky waveguide antennas, and antennas. Posterior flap issues

Active Publication Date: 2013-08-14
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The omnidirectional beam of the hemispherical surface cannot be realized by the traditional helical antenna;
[0005] 2) While the traditional helical antenna achieves a wide beam, the rear lobe is high, which is greatly affected by the environmental conditions of the installation boundary

Method used

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  • X-band wide beam circularly polarized antenna for lunar rover
  • X-band wide beam circularly polarized antenna for lunar rover

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Embodiment Construction

[0026] Referring to the accompanying drawings showing embodiments of the invention, the invention will be described in more detail below. However, the present invention may be implemented in different dimensions and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are presented so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to others skilled in the art. In these drawings, relative dimensions may be exaggerated or reduced for clarity.

[0027] now refer to figure 1 An example diagram describing in detail the structure of the X-band wide-beam circularly polarized antenna used for the lunar surface rover. It includes: high-frequency coaxial socket 1, which feeds high-frequency signals through connecting high-frequency cables; coaxial waveguide conversion 2, which converts high-frequency signals from coaxial transmission to waveguide transmission; circular polarizer 3, circu...

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Abstract

An X-band wide beam circularly polarized antenna for a lunar rover mainly and structurally comprises a high-frequency coaxial socket (50 Omega, SMA or TNC), a coaxial waveguide converter, a circular polarizer, an antennal shield with a beam broadening device and an antenna support. A high-frequency signal is fed via a high-frequency cable and is converted into a waveguide transmission signal via the coaxial waveguide converter, and a linear polarization signal is converted into a circular polarization signal via the circular polarizer. Electromagnetic waves are radiated from a waveguide aperture, the beam is broadened via the antenna shield, and a circular polarization directional diagram is formed. The X-band wide beam circularly polarized antennal overcomes detects that the beam width of the conventional antenna is not enough, the back lobe of a wide beam antenna is higher, and the antenna is easily interfered by the environment. The omnidirectional directional diagram of the antenna can satisfy demand of the rover for ground communication with various poses, and very low back lobe radiation lowers the influence of the rover mounting environment on the radiation performance of the antenna.

Description

technical field [0001] The invention relates to an X-band wide-beam circularly polarized antenna, in particular to an X-band wide-beam circularly polarized antenna for a lunar patroller. Background technique [0002] At present, the traditional X-band omnidirectional antenna adopts the form of a helical antenna. A helical antenna is an antenna with a helical shape. It consists of a metal helix with good electrical conductivity, and is usually fed by a coaxial line. The core wire of the coaxial line is connected to one end of the helical line, and the outer conductor of the coaxial line is connected to the grounded metal mesh (or plate). connect. The radiation direction of the helical antenna is related to the circumference of the helix. When the circumference of the helix is ​​much smaller than one wavelength, the direction of the strongest radiation is perpendicular to the helix axis; when the circumference of the helix is ​​on the order of one wavelength, the strongest ...

Claims

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Application Information

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IPC IPC(8): H01Q15/24H01Q13/20H01Q1/42H01Q1/27
Inventor 温沫张顺波钱巧元
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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