Thin Substrate Phase-Corrected Broadband Planar 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: 2016-03-23
SOUTHEAST UNIV
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  • Abstract
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  • 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-Corrected Broadband Planar 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 thin-substrate phase-corrected broadband planar horn antenna relates to a horn antenna. The antenna includes a microstrip feeder (2), a horn antenna (3) and multiple logarithmic periodic oscillators (4) on a dielectric substrate (1). The horn antenna (3) consists of a first metal plane (7), a second Composed of a metal plane (8) and two rows of metallized via-hole horn sidewalls (9), the horn antenna (3) has a metallized via-hole array (11) and a dielectric-filled waveguide (14), and the horn antenna (3) On the aperture surface (10), each dielectric-filled waveguide (14) is connected with a logarithmic periodic oscillator (4). Electromagnetic waves can reach the logarithmic periodic oscillator in the same phase and then radiate, and the polarization direction of the radiation field is parallel to the substrate. The antenna can be manufactured using a thin substrate and has wide frequency band, high gain, low cost and compact structure.

Description

technical field [0001] The invention relates to a horn antenna, in particular to a thin-substrate phase correction broadband planar horn antenna. Background technique [0002] Horn antennas are widely used in systems such as satellite communications, ground microwave links, and radio telescopes. However, the huge geometric size of the three-dimensional horn antenna restricts its application and development in planar circuits. In recent years, the proposal and development of substrate-integrated waveguide technology have greatly promoted the development of planar horn antennas. The substrate-integrated waveguide has the advantages of small size, light weight, easy integration and fabrication. The planar substrate-integrated waveguide horn antenna based on the planar substrate-integrated waveguide not only has the characteristics of the horn antenna, but also realizes the miniaturization and light weight of the horn antenna, and is easy to integrate in the microwave and mill...

Claims

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Application Information

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