A Coplanar Waveguide to Stripline Heterogeneous Transition Structure

Abstract

The invention discloses a coplanar waveguide-to-stripline hetero-layer transition structure. The structure includes a coaxial connector, a thin substrate medium and a metal structure. The impedance of the input port of the coaxial connector is 50 ohms, and the output end is 50 ohms. Probe; The thin substrate medium includes a thin substrate coplanar waveguide, a blind conversion hole structure and a stripline. The two sides of the thin substrate coplanar waveguide structure are grounded, so that the signal is transmitted in the signal line of 50 ohms in the middle; the conversion blind One end of the hole is connected to the coplanar waveguide of the thin substrate, and the other end is connected to the thin substrate strip line; The medium is fixed on the metal structural member with screws, and finally the probe of the output port of the coaxial connector is welded to the center position of the coplanar waveguide signal transmission line of the thin substrate. The invention is suitable for relatively thin substrate, the connector and the strip line are on different planes, the insertion loss is small, and the impedance matching feeding to the thin substrate strip line is realized.

Description

technical field [0001] The invention relates to the field of microwave technology, in particular to a coplanar waveguide-to-stripline hetero-layer transition structure. Background technique [0002] The transition from coplanar waveguide to stripline structure is a feeding method applied to thin-substrate array antennas. The strip line is formed by crimping double-layer dielectric plates. The uncrimped surface of the dielectric plate is covered with copper and grounded. A signal transmission line with a fixed width is crimped between the two layers of dielectric plates. The signal transmission structure is wrapped by metal ground. , so that the signal is less affected by the outside world and has lower insertion loss. The coplanar waveguide structure is composed of a layer of dielectric plates and the ground is on the same layer as the signal transmission line, and the two sides of the signal transmission line are ground, which is convenient for transition with the coaxial ...

AI Technical Summary

Problems solved by technology

In this structure, when the stripline dielectric substrate is relatively thin, and the stripline and the connector are on different planes, the transition of the coaxial two-wire by this method will cause the inner core of the coaxial line to be broken, and the small cover plate is too small and too thin. It is not easy to operate in engineering, so that the power supply fails

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