Microstrip to dielectric waveguide transition

Details Microstrip to dielectric waveguide transition Microstrip to dielectric waveguide transition

1987-06-08

1988-05-17

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333 34, H01P 510

Patent

active

047453770

ABSTRACT:
A microstrip to dielectric waveguide transition is provided comprising a gth of rectangular dielectric waveguide which has one end tapered in such a manner that the height of the waveguide top surface above the waveguide bottom surface decreases linearly from full height to zero height at the tapered end of the length of waveguide. The bottom surface of the waveguide length is mounted on the top surface of a planar microstrip dielectric substrate having an electrically conductive metallic ground plane on the bottom substrate surface and a length of microstrip conductor on the top substrate surface aligned with the waveguide length and abutting the tapered end of the waveguide length. A second length of microstrip conductor is mounted on the tapered portion and part of the untapered portion of the top surface of the waveguide length and is electrically connected to the first microstrip conductor at the tapered end of the waveguide length. The dielectric constant of the microstrip substrate should be no greater than the dielectric constant of the dielectric waveguide length and preferably should be much less.

REFERENCES:
patent: 2825876 (1958-03-01), Le Vine et al.
patent: 2979676 (1961-04-01), Rueger
patent: 4716387 (1987-12-01), Igarashi

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