S.O. Krumlyakov1, I.S. Formalnov2, A.I. Pustovalov3, D.V. Baryshev4

1-4 PJSC «Radiofizika» (Moscow, Russia)

1-2 Moscow Aviation Institute (National Research University) (Moscow, Russia)

To implement millimeter-wave radio communication systems, an efficient transition from a waveguide to a strip line is required. The transition serves for the transmission of an electromagnetic signal between the waveguide and the planar transmission line implemented on the dielectric board. Such junctions also find application in microwave measuring equipment, where waveguides are used as transmission lines with minimal losses. 

The main requirements for waveguide-strip junctions are a wide operating frequency band, a low level of intrinsic signal losses in the junction, low production costs, and maximum design simplicity for integrating the transition into the device.

Typically, the transition from a waveguide transmission line to a strip line requires plated through holes to prevent leakage of electromagnetic energy into the substrate. We propose to replace the through-metalized holes in the structure with a throttle connection. A waveguide-strip junction was modeled. The junction consists of a dielectric substrate with a conductive pattern. The substrate is fixed at the end of the waveguide. A conductive cutout pattern provides a short-circuited waveguide wall. The strip probe is located on the top surface of the dielectric substrate. The rectangular matching element (patch) and the surrounding metallization are applied to the bottom surface. The probe overlaps a rectangular patch.

Krumlyakov S.O., Formalnov I.S., Pustovalov A.I., Baryshev D.V. Modeling and experimental study of a waveguide-strip transition in the millimeter wavelength range. Radiotekhnika. 2021. V. 85. № 10. P. 5−10. DOI: https://doi.org/10.18127/j00338486-202110-01 (In Russian)

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