Planar horn antenna for phase amplitude calibration

Abstract

The invention relates to a planar horn antenna, in particular to a planar horn antenna for phase amplitude calibration. The antenna comprises a micro-strip feeder (1), a substrate integrated waveguide horn antenna (2) and embedded plated-through holes (3) which are integrated on a dielectric substrate (4), the micro-strip feeder (1) is connected with an antenna port (5) and a narrow horn antenna port (6), the horn antenna (2) is composed of a first metal plane (8), a second metal plane (10) and two rows of plated-through hole horn side walls (11), a middle plated-through hole array (12), a left plated-through hole array (16) and a right plated-through hole array (17) which are composed of the plated-through holes (3) form four dielectric-filled waveguides in the horn antenna (2), and one ends of the four dielectric-filled waveguides are close to the narrow antenna port (6) while the other ends of the four dielectric-filled waveguides are disposed on an antenna aperture surface (15). The antenna is capable of increasing antenna gain.

Description

technical field [0001] The invention relates to a planar horn antenna, in particular to a planar horn antenna with phase amplitude 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 also realizes the miniaturization and light w...

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 is not synchronized when the electromagnetic wave propagates to the horn aperture surface, the amplitude distribution of the aperture electric field intensity is not uniform, and the radiation Directionality 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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