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Fractal media resonant antenna used as paraboloidal feed source

A dielectric resonant antenna, paraboloid technology, applied in the direction of antenna, radiating element structure, electrical components, etc., can solve the problems of insufficient understanding and application, achieve low side lobe and back lobe levels, high phase distribution, low The effect of loss

Inactive Publication Date: 2015-05-06
GUANGDONG SHENGLU TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This feature has not yet been fully understood and applied in the field of electromagnetism.

Method used

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  • Fractal media resonant antenna used as paraboloidal feed source
  • Fractal media resonant antenna used as paraboloidal feed source
  • Fractal media resonant antenna used as paraboloidal feed source

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Embodiment Construction

[0030] Such as Figure 1-Figure 5 As shown, the present invention is a fractal dielectric resonant antenna used as a parabolic feed source with a smaller focal diameter ratio F / D, and its structure includes: a feeding circular waveguide 1, a cylindrical dielectric matching section 2 in the tube, and a conical tube outside the tube The dielectric radiator 3 and the hyperbolic reflective surface 4 at the bottom of the cone. The hyperbolic reflective surface 4 at the bottom of the cone is located on the bottom surface of the conical dielectric radiator 3 outside the tube.

[0031]The front section of the dielectric radiator is a cylinder with a diameter of d and a height of h, and the back section is a cone with a bottom diameter of D and a height of H; the front section is processed into several small sections with different diameters by cutting technology, each The small section of dielectric block is drilled or grooved respectively, and then the entire front section is inserte...

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PUM

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Abstract

The invention discloses a fractal media resonant antenna used as a paraboloidal feed source. The fractal media resonant antenna used as the paraboloidal feed source comprises a feed circular waveguide and a media radiator; the media radiator comprises a front internal cylindrical media matching section and a rear external tapered media radiator which are respectively a cylinder body and a tapered body prepared by rotating forming contour lines. The fractal media resonant antenna used as the paraboloidal feed source has the advantages of being large in bandwidth, large in beam width, low in sidelobe and back lobe levels, uniform in amplitude and phase distribution in a main lobe, low in cross-polarization level, high in gain, high in efficiency, small in size, and low in cost; the antenna has the optimal type suitable for a paraboloidal reflector feed source with relatively small focus-diameter ratio F / D.

Description

technical field [0001] The invention relates to the technical field of communication antenna equipment, in particular to a fractal dielectric resonant antenna (DRA) suitable for use as a parabolic reflector antenna feed source. Background technique [0002] The parabolic antenna is one of the earliest invented and most widely used antenna types in the antenna family. The parabolic reflector reflects the electromagnetic wave emitted by the feed source at the focal point toward the front and maintains the same phase, thereby forming a highly directional beam, or converging parallel beams at the focal point. Its most notable feature is high directivity, so it is often used in high-gain occasions, such as radio astronomy telescopes, satellite ground receiving stations, fire control radars, and microwave relay transmissions. Parabolic antennas are also often used between mobile communication base stations to realize large-capacity aerial microwave link communications. The parabo...

Claims

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Application Information

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IPC IPC(8): H01Q15/16H01Q1/36H01Q19/10
Inventor 李道铁陈志兴
Owner GUANGDONG SHENGLU TELECOMM TECH
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