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LFBB (Low Frequency Broadband) dual-polarization four-ridge horn antenna

A four-ridged horn, dual-polarization technology, used in waveguide horns, circuits, etc., can solve the problems of poor antenna performance, large size, and difficult to move and rotate, and achieve the effect of meeting test requirements and improving stability.

Active Publication Date: 2013-10-23
GUANGDONG SHENGLU TELECOMM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it can be seen from domestic and foreign data reports that the minimum frequency of the current four-ridge horn antenna is about 100MHz, which cannot meet the test requirements for antennas that receive broadcast signals with a minimum frequency of 75MHz, and such low-frequency antennas are often large in size and heavy in weight. Heavy, not easy to move and rotate, difficult to process, and errors are prone to occur during the process, resulting in poor antenna performance

Method used

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  • LFBB (Low Frequency Broadband) dual-polarization four-ridge horn antenna
  • LFBB (Low Frequency Broadband) dual-polarization four-ridge horn antenna
  • LFBB (Low Frequency Broadband) dual-polarization four-ridge horn antenna

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Experimental program
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Effect test

Embodiment 1

[0041] refer to Figure 1~4 , the present invention includes an antenna wall 1, a ridge 2, a short circuit board 3, a coaxial joint 4, a feed probe 5, a polytetrafluoroethylene plate 6, a short circuit post 7, a rectangular slot 8, a cylindrical slot 9 and a transition body 10. in:

[0042] The antenna wall 1 is composed of a straight waveguide part and a horn part, the thickness is 6mm, the axial length of the straight waveguide part is 385mm, the axial length is 2200mm, and the antenna aperture length and width are both 2300mm.

[0043] The said ridges 2 are set to four and are fixed inside the antenna wall 1 . The thickness of each ridge is 49mm, and the top curve of the ridge is composed of a straight part and an exponential part. The edge of each ridge adopts an aluminum solid structure, and the inner wall adopts a honeycomb structure. The top of each ridge 2 is chamfered with an angle of 55 degrees and a width of 18 mm. The four symmetrical ridges 2 are in the middle ...

Embodiment 2

[0050] refer to Figure 1~4 , the present invention includes an antenna wall 1, a ridge 2, a short circuit board 3, a coaxial joint 4, a feed probe 5, a polytetrafluoroethylene plate 6, a short circuit post 7, a rectangular slot 8, a cylindrical slot 9 and a transition body 10. in:

[0051] The antenna wall 1 is composed of a straight waveguide part and a horn part, the thickness is 8mm, the axial length of the straight waveguide part is 405mm, the axial length is 2300mm, and the antenna aperture length and width are both 2400mm.

[0052]The said ridges 2 are set to four and are fixed inside the antenna wall 1 . The thickness of each ridge is 54mm, and the top curve of the ridge is composed of a straight part and an index part. The edge of each ridge adopts an aluminum solid structure, and the inner wall adopts a mesh structure. The top of each ridge 2 is provided with a chamfer with an angle of 60 degrees and a width of 20 mm. Four symmetrical ridges 2 are fixed in paralle...

Embodiment 3

[0059] refer to Figure 1~4 , the present invention includes an antenna wall 1, a ridge 2, a short circuit board 3, a coaxial joint 4, a feed probe 5, a polytetrafluoroethylene plate 6, a short circuit post 7, a rectangular slot 8, a cylindrical slot 9 and a transition body 10.

[0060] The antenna wall 1 is composed of a straight waveguide part and a horn part, and its structural parameters are: thickness 3mm, axial length of the straight waveguide part 360mm, axial length 2100mm, antenna aperture length and width both 2200mm.

[0061] The ridges 2, set to four, are fixed inside the antenna wall 1, the thickness of each ridge is 45mm, and the top curve of the ridge is composed of a straight line part and an index part, the edge of each ridge is made of aluminum solid structure, and the inner wall is made of hollow structure in the middle. The top of each ridge 2 is chamfered with an angle of 50 degrees and a width of 15 mm. The four symmetrical ridges 2 are in the middle of...

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Abstract

The invention discloses an LFBB (Low Frequency Broadband) dual-polarization four-ridge horn antenna, which mainly solves the problems that the test requirement of a low-frequency antenna cannot be met by the prior art, the low-frequency antenna is very heavy and not easy to move and rotate, and the processing is difficult. The LFBB dual-polarization four-ridge horn antenna comprises an antenna wall (1), ridges (2), a short-circuit board (3), coaxial connectors (4), feed probes (5), a PTFE (Poly Tetra Fluoro Ethylene) board (6), short-circuit pins (7), a rectangular groove (8), a cylindrical groove (9) and transition cones (10), wherein the inner walls of four ridges (2) adopt hollow structures, the top part of each ridge is provided with a cutting angle, the PTFE board (6) is fixedly arranged at the middle part of the four ridges (2), one side of the short-circuit board (3) is provided with the rectangular groove (8), the top part of each feed probe (5) is of a conical structure, and the surface of the tail end of each feed probe (5) is plated with a flexible conducting material such as silver or tin. The LFBB dual-polarization four-ridge horn antenna disclosed by the invention has the advantages that the weight is light, the structure is stable, and the lowest frequency can be stabilized at 75 MHz; and the LFBB dual-polarization four-ridge horn antenna is suitable for a source antenna in low-frequency antenna test.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a low-frequency broadband dual-polarized four-ridge horn antenna, which can be used as a source antenna of a measurement system. Background technique [0002] With the rapid development of modern wireless communication technology, broadband technology has been widely used in microwave measurement, electromagnetic compatibility test, radar, detection system and communication system and other fields. Especially in electromagnetic compatibility testing and antenna measurement, the application of broadband antenna enables users to measure in a wide frequency range without changing the test source antenna. [0003] The most commonly used broadband antennas are log-periodic antennas, biconical antennas, helical antennas, and ridged horn antennas. However, due to the limitation of gain and geometric size, some antennas like log-periodic antennas are not suitable for use in certain spa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02
Inventor 尚军平李欣荣
Owner GUANGDONG SHENGLU TELECOMM TECH
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