Phase-calibrated SIW (substrate integrated waveguide) antenna with embedded plated through holes

Abstract

The invention relates to a planar horn antenna, in particular to a phase-calibrated SIW (substrate integrated waveguide) antenna with embedded plated through holes. The antenna comprises a microstrip feeder (1), a horn antenna (2) and plated through holes (3), wherein the microstrip feeder (1), the horn antenna (2) and the plated through holes (3) are integrated on a dielectric substrate (4). The horn antenna (2) comprises a first metal plane (8), a second metal plane (10) and sidewalls (11) of two rows of the plated through holes. The plated through holes (3) in the horn antenna (2) form one or a plurality of through hole line arrays (12). Each two adjacent line arrays (12) form a dielectric loaded waveguide (13) with the first metal plane (8) and the second metal plane (10), or one line array (12) and one horn sidewall (11) form a dielectric loaded waveguide (13) with the first metal plane (8) and the second metal plane (10). One end of each dielectric loaded waveguide (13) is inside the horn antenna (2), and the other end of each dielectric loaded waveguide (13) is close to an antenna aperture surface (14). Antenna gain of the phase-calibrated SIW antenna can be increased.

Description

technical field [0001] The invention relates to a planar horn antenna, in particular to a substrate integrated waveguide antenna embedded with metallized via holes for phase calibration. Background technique [0002] Horn antennas are widely used in systems such as satellite communications, ground microwave links, and radio telescopes. However, the larger geometric size of the three-dimensional horn antenna and the incompatibility with the planar circuit process make its cost higher, thus limiting the development of its application. 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 planar integration and simple processing. In addition to the characteristics of the horn antenna, the planar substrate-integrated waveguide horn antenna based on the planar substrate-integrated waveguide al...

AI Technical Summary

Problems solved by technology

In addition to the characteristics of the horn antenna, the planar substrate-integrated waveguide horn antenna based on the planar substrate-integrated waveguide also realizes the miniaturization and light weight of the horn antenna, and is easy to integrate in the microwave and millimeter-wave planar circuits. 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 of the electromagnetic wave propagating to the horn aperture surface is not synchronized, the phase distribution of the aperture electric field intensity is not uniform, and the radiation direction sex and gain reduction

At present, methods such as dielectric loading and dielectric prism have been used to correct the horn aperture field, but these methods can only improve the consistency of the phase distribution, and these phase calibration structures increase the overall structural size of the antenna

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