Thin-substrate phase correction slot-line difference-beam planar horn antenna
A horn antenna and phase correction technology, applied to waveguide horns, circuits, etc., can solve the problems of low gain, radiation directivity and gain reduction, phase asynchrony, etc. Small size effect
Inactive Publication Date: 2014-02-19
SOUTHEAST UNIV
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Problems solved by technology
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. The zero depth of the difference beam antenna is shallow and the slope is low, which affects the direction finding accuracy of the radar
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
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[0023]The embodiment that the present invention adopts is: the thin substrate phase correction groove line difference beam planar horn antenna includes the microstrip feeder 2 that is arranged on the dielectric substrate 1, the substrate integrated horn antenna 3 and a plurality of slot line horns 4; The first port 5 of the microstrip 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; A metal plane 7, a 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 The width between the two rows of metallized via holes on the horn side walls 9 of the integrated horn antenna 3 gradually increases to form a horn-shaped opening, and the end of the opening is the aperture surface 10 of th...
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The invention provides a thin-substrate phase correction slot-line difference-beam planar horn antenna and relates to a horn antenna. The thin-substrate phase correction slot-line difference-beam planar horn antenna comprises a micro-strip feeder line (2), a horn antenna body (3) and slot-line horns (4) which are located on a dielectric substrate (1), wherein the horn antenna body (3) consists of a first metal plane (7), a second metal plane (8) and two rows of metalized via hole horn side walls (9). The horn antenna body (3) is provided with an odd number of metalized via hole arrays (11) and an even number of dielectric-loaded waveguides (17), each of the dielectric-loaded waveguides (17) on the caliber face (10) of the horn antenna body (3) is connected with one of the slot-line horns (4), and a left-half antenna (15) and the slot-line horns (4) connected with the left-half antenna (15) are symmetric with a right-half antenna (16) and the slot-line horns (4) connected with the right-half antenna (16). Electromagnetic waves can reach to the slot-line horns in an in-phase mode and then are radiated, and the polarization direction of a radiation field is parallel to the substrate. The thin-substrate phase correction slot-line difference-beam planar horn antenna can be manufactured by using the thin substrate and is high in gain, large in null depth, low in cost and compact in structure.
Description
technical field [0001] The invention relates to a horn antenna, in particular to a planar horn antenna with a thin substrate phase correction groove line difference beam. 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 integrat...
Claims
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IPC IPC(8): H01Q13/02
Inventor 殷晓星赵洪新张兴稳
Owner SOUTHEAST UNIV