Transition from microstrip to waveguide
First Claim
1. A transition from microstrip to waveguide, comprising a rectangular waveguide composed of a floor separated from, but electrically connected to, side walls and a ceiling, a microstrip structure including a resilient substrate coextensive with the floor and separating the side walls from the floor, and an electrical contact depending from the ceiling and contacting the microstrip structure.
1 Assignment
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Accused Products
Abstract
A transition from microstrip to waveguide comprises a rectangular waveguide and a microstrip structure formed by a resilient substrate (24) having a stripline (26) on one surface and a ground plane (44) on an opposite surface, the conductors (26, 44) being interconnected by viaholes. The substrate (24) is disposed between the side walls (36) and the floor (22) of the waveguide with the ground plane contacting the floor. The stripline extends from one end of the waveguide along a portion of its length. A tapered ridge (38) depends from the ceiling (34) of the waveguide and extends from the other end of the waveguide. A terminal end (40) of the ridge contacts a terminal portion of the stripline under mechanical pressure. The ridge (38) may have a choice of profiles such as triangular, half cosine and half cosine with a semicircular cut-out in the upright edge.
5 Citations
11 Claims
- 1. A transition from microstrip to waveguide, comprising a rectangular waveguide composed of a floor separated from, but electrically connected to, side walls and a ceiling, a microstrip structure including a resilient substrate coextensive with the floor and separating the side walls from the floor, and an electrical contact depending from the ceiling and contacting the microstrip structure.
- 3. A transition from microstrip to waveguide, comprising a rectangular waveguide comprising a ceiling integrally formed with side walls and a separate floor and a microstrip structure formed by a resilient substrate having a stripline conductor on one surface and a ground plane conductor on an opposite surface, wherein the substrate is disposed between the sidewalls and the floor with the ground plane conductor contacting the floor, the stripline conductor extends along the longitudinal plane of symmetry for a portion of the length of the waveguide from one end thereof, means are provided for electrically connecting the floor to the sidewalls, and a tapered ridge depends from the ceiling and extends along the longitudinal plane of symmetry of the ceiling in a direction from the other end thereof, a terminal end of the ridge contacting a terminal portion of the stripline conductor.
Specification