Tunable broadside coupled transmission lines for electromagnetic waves
AssigneeLamina Ceramics, Inc.
InventorJoseph Mazzochette
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Abstract
In accordance with the invention, coupled transmission lines are fabricated in forms that are tolerant of manufacturing variation or can be readily tuned. In accordance with a first embodiment, the transmission line is formed with alternating overlapping edges for enhanced manufacturing tolerance. In a second embodiment, the line is provided one or more overlapping adjustment regions to permit tuning. A third embodiment has both alternating overlapping edges and one or more tuning regions.
Claims8
In a coupled transmission line for transmission of electromagnetic waves comprising a first longitudinally extending conductive strip separated from a second longitudinally extending conductive strip by a layer of dielectric material, the first and second strips partially overlapping across the layers of dielectric,
- the improvement wherein each of the conductive strips have first and second edges extending in the longitudinal direction and the first edge of the first strip overlaps the second strip over a first portion of the longitudinal extent of the line and the second edge of the first strip overlaps the second strip over a second portion of the longitudinal extent of the line.
In a coupled transmission line for transmission of electromagnetic waves comprising a first longitudinally extending conductive strip separated from a second longitudinally extending conductive strip by a layer of dielectric material, the first and second strips at least partially overlapping across the layers of dielectric,
- the improvement wherein at least one of the conductive strips has a first width transverse to the longitudinal direction and at least one region of a second width greater than the first width, the second width overlapping the other conductive strip;
- and
- the second width is trimmed to tune the coupling between the two strips.
Dependencies are inferred from the claim text.