Conversion circuit from coplanar waveguides to substrate integrated non-radiative dielectric waveguide

Abstract

The invention discloses a conversion circuit from coplanar waveguides to a substrate integrated non-radiative dielectric waveguide. The conversion circuit is a dual conversion three-layer circuit structure formed by clamping a layer of substrate integrated non-radiative dielectric waveguide between two layers of coplanar waveguides. By opening a rectangular slot in a grounding plate, an electromagnetic field transmitted in the coplanar waveguide at the top is coupled into the substrate integrated non-radiative dielectric waveguide in the middle, and is then coupled from the substrate integrated non-radiative dielectric waveguide into the coplanar waveguide at the bottom. The substrate integrated non-radiative dielectric waveguide is achieved by designing a series of air through holes in a printed circuit board. According to the invention, the conversion circuit can successfully achieve the transition from a planar structure to a non-planar structure, and facilitate the design and integration of a millimeter-wave frequency band circuit; and is simple in production process and low in cost.

Description

technical field [0001] The invention relates to a conversion circuit from a coplanar waveguide to a substrate integrated non-radiative dielectric waveguide, which belongs to the field of microwave technology. Background technique [0002] With the rapid development of modern wireless communication technology, spectrum resources are increasingly scarce, which makes the research and application of microwave circuits expand to millimeter wave and higher frequency bands. Non-radiative dielectric waveguides have low radiation and leakage losses at structural bends and discontinuities, making them an important component in circuit design at mmWave frequencies. [0003] However, the traditional non-radiative dielectric waveguide has the following two problems when it is applied to millimeter wave circuit design: [0004] 1) The manufacturing process of traditional non-radiative dielectric waveguides is complicated, and the upper and lower metal plates need to be pasted on both sid...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the difficulty in making and integrating traditional non-radiative dielectric waveguides, the present invention provides a conversion circuit from coplanar waveguide to substrate integrated non-radiative dielectric waveguide

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