Novel miniaturized broadband SW-SIW horn antenna and design method thereof

Abstract

The invention discloses a novel miniaturized broadband SW-SIW horn antenna and a design method thereof. Periodic grooves are formed in a top metal plate and a bottom metal plate and coupling capacitance is made between the upper and lower grooves, thereby affecting the electrical performance parameter of a dielectric substrate; and thus the propagation constant and impedance characteristic of thedielectric layer change to affect the electromagnetic wave transmission, thereby forming slow wave characteristic. On the basis of the two kinds of slow wave structures formed by the slotting, electromagnetic waves are changed from spherical waves to plane waves at a radiation port of the horn antenna, so that the radiation lobe width is reduced and the radiation efficiency of the antenna is improved. Compared with the traditional horn antenna, the disclosed novel miniaturized broadband SW-SIW horn antenna has advantages of high directivity, wide frequency band, high gain, greatly improved radiation efficiency, low profile, small size, low connection loss with the planar circuit, good integration implementation effect, simple structure, great easiness in processing, and low engineering application cost.

Description

technical field [0001] The invention belongs to the technical field of microwave antenna engineering, can be widely used in interstellar communication, 5G (5th-generation) communication, and millimeter wave communication, especially a miniaturized broadband slow wave substrate integrated waveguide (SW-SIW, SlowWave-Substrate Integrated Waveguide) technology H plane horn antenna. Background technique [0002] With the advent of a new generation of wireless communication technology, the entire international community is intensifying efforts to build a new generation of communication infrastructure and research and development of a new generation of communication technology and new microwave devices. The new generation of communication system also puts forward higher requirements on the performance and integration of microwave devices. The antenna is the most critical part of the communication system, and it is widely used in daily life, aerospace, interstellar communication a...

AI Technical Summary

Problems solved by technology

However, compared with the traditional microstrip antenna, the horn antenna is relatively large in size and occupies a large space, which is difficult to integrate. Moreover, the horn antenna is connected to the circuit system in the traditional coaxial transition method, which often produces a large insertion loss

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