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Thin-substrate phase correction broadband plane horn antenna

A horn antenna and phase correction technology, applied to waveguide horns, circuits, etc., can solve the problems of low horn antenna gain, narrow operating frequency band, large patch size, etc., to achieve phase inconsistency correction, wide operating frequency band, and small feed loss Effect

Inactive Publication Date: 2014-03-05
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing antennas load a patch in front of the planar horn antenna to improve the radiation of the thin substrate planar horn antenna, but the size of the loaded patch is large and the working frequency band is narrow
In addition, the gain of the traditional substrate-integrated waveguide planar horn antenna is relatively low. The reason is that due to the continuous opening of the horn mouth, the phase is out of sync when the electromagnetic wave propagates to the horn aperture surface, and the radiation directivity and gain are reduced.
At present, methods such as dielectric loading and dielectric prisms have been used to correct the horn aperture field, but these phase alignment structures increase the overall structural size of the antenna

Method used

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  • Thin-substrate phase correction broadband plane horn antenna

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Embodiment Construction

[0021] The embodiment adopted in the present invention is: the thin substrate phase correction broadband planar horn antenna includes a microstrip feeder 2, a substrate integrated horn antenna 3 and a plurality of logarithmic periodic oscillators 4 arranged on a dielectric substrate 1; the microstrip The first port 5 of the feeder 2 is the input and output port of the antenna, and the second port 6 of the microstrip feeder 2 is connected to the substrate integrated horn antenna 3; The plane 7, the second metal plane 8 located on the other side of the dielectric substrate 1, and two rows of metallized via-hole horn sidewalls 9 passing through the dielectric substrate 1 to connect the first metal plane 7 and the second metal plane 8, the substrate integrates the horn The width between the horn side walls 9 of the two rows of metallized via holes of the antenna 3 gradually increases to form a horn-shaped opening, and the end of the opening is the aperture surface 10 of the substra...

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Abstract

The invention relates to a horn antenna, in particular to a thin-substrate phase correction broadband plane horn antenna which comprises a micro-strip feeder line (2), a horn antenna body (3) and a plurality of log-periodic vibrators (4), and the micro-strip feeder line (2), the horn antenna body (3) and the log-periodic vibrators (4) are arranged on a dielectric substrate (1). The horn antenna body (3) is composed of a first metal plane (7), a second metal plane (8) and two rows of metalized via hole horn side walls (9), metalized via hole arrays (11) and dielectric-loaded waveguides (14) are arranged in the horn antenna body (3), and the dielectric-loaded waveguides (14) are connected with the log-periodic vibrators (4) respectively on the caliber face (10) of the horn antenna body (3). Electromagnetic waves can reach the log-periodic vibrators in an in-phase mode and then are reradiated, and polarization of a radiation field is parallel with the substrate. The antenna can be made through a thin substrate, and is wide in bandwidth, high in gain, low in cost and compact in structure.

Description

Technical field [0001] The present invention involves a speaker antenna, especially a thin substrate phase correction broadband plane speaker antenna. Background technique [0002] The speaker antenna has a wide range of applications in satellite communications, ground microwave links, and radio telescopes.However, the huge geometric size of the three -dimensional speaker antenna restricts its application and development in the plane circuit.In recent years, the proposal and development of substrate integrated waveguide technology has promoted the development of the plane speaker antenna.The substrate integrated waveguide has the advantages of small size, light weight, easy integration and processing.In addition to the characteristics of the flat -based integrated waveguide plane horn, in addition to the characteristics of the speaker antenna, it also achieves the miniaturization and lightness of the speaker antenna, and it is easy to integrate in the microwave millimeter wave pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02
Inventor 赵洪新殷晓星吴正阳
Owner SOUTHEAST UNIV
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