Thin-substrate phase amplitude correction oscillator planar horn antenna

Abstract

The invention discloses a thin-substrate phase amplitude correction oscillator planar horn antenna, and relates to a horn antenna. The thin-substrate phase amplitude correction oscillator planar horn antenna comprises a micro-strip feeder (2), a horn antenna body (3) and a plurality of oscillators (4), wherein the micro-strip feeder (2), the horn antenna body (3) and the oscillators (4) are arranged on a dielectric substrate (1), the horn antenna body (3) comprises a first metal plane (7), a second metal plane (8) and two metallization through hole horn side walls (9), the horn antenna body (3) is provided with metallization through hole arrays (11) and dielectric-loaded waveguides (12), on an aperture surface (10) of the horn antenna body (3), the widths of the dielectric-loaded waveguides (12) are equal, and each dielectric-loaded waveguide (12) is connected with the corresponding oscillator (4). Electromagnetic waves can reach the oscillators (4) in an equal-amplitude and in-phase mode and then carry out radiation, and the direction of polarization of a radiation field is parallel to the dielectric substrate; the thin-substrate phase amplitude correction oscillator planar horn antenna can be manufactured with the thin substrate, and is high in gain, 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 amplitude correction vibrator. 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 ...

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 not synchronized when the electromagnetic wave propagates to the horn aperture surface, and the amplitude distribution of the aperture electric field intensity is not uniform. Radiation directivity and gain reduction

At present, methods such as dielectric loading and dielectric prisms have been used to correct the horn aperture field, but these methods can only improve the consistency of the phase distribution, but cannot improve the uniformity of the amplitude distribution, and these phase calibration structures increase the overall structural size of the antenna

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