Nonradiative dielectric waveguide and method of producing the same
AssigneeMurata Manufacturing Co., Ltd.
InventorAtsushi Saitoh
Life of this patent
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Abstract
A nonradiative dielectric line is provided which solves problems concerning the relative positioning of the parts, mass production, and variations in electrical characteristics of a dielectric strip, and which makes integral molding using injection molding technology possible. A height of a dielectric in the propagation area is made higher than the height in the non-propagation area, and a dielectric layer having a low dielectric constant is provided in the non-propagation area. Thus, the thickness of the dielectric layer in the non-propagation area can be increased.
Claims22
A nonradiative dielectric waveguide comprising:
- an upper conductor;
- a lower conductor located apart from said upper conductor;
- a first dielectric layer disposed at a lower surface of said upper conductor;
- and
- at a second dielectric layer disposed at an upper surface of said lower conductor;
- said first and second dielectric layers each having a respective bridging dielectric member which is thicker than other portions of the corresponding dielectric layers;
- said bridging dielectric member of said first dielectric layer having an inner portion which confronts a corresponding inner portion of the bridging dielectric member of said second dielectric layer to form a propagating region;
- and
- a distance between said upper and lower conductors adjacent said bridging dielectric members being larger than that in a non-propagating region adjacent other portions of said first and second dielectric layers.
A method of producing a nonradiative dielectric waveguide comprising the steps of:
- forming a waveguide body having opposing dielectric plates and a dielectric strip therebetween, said plates having projections, on outer surfaces of said plates, adjacent said dielectric strip;
- and
- applying a conductive material on the outer surfaces of said plates.
A method of producing a nonradiative dielectric waveguide comprising the steps of:
- forming a first waveguide body having a first dielectric plate and a dielectric strip attached to one surface of said first dielectric plate, said first plate having a first projection, on another surface of said first plate, adjacent said dielectric strip;
- forming a second waveguide body having a second dielectric plate and a second projection which corresponds to said dielectric strip pattern;
- opposing said first and second waveguide bodies so that said first and second projections face outward, and said dielectric strip is located between said first and second plates;
- applying electrically conductive material on the outer surfaces of said plates.
Dependencies are inferred from the claim text.