Abstract:
An apparatus is provided. There is a circuit assembly with a package substrate and an integrated circuit (IC). The package substrate has a microstrip line, and the IC is secured to the package substrate and is electrically coupled to the microstrip line. A circuit board is also secured to the package substrate. A dielectric waveguide is secured to the circuit board. The dielectric waveguide has a dielectric core that extends into a transition region located between the dielectric waveguide and the microstrip line, and the microstrip line is configured to form a communication link with the dielectric waveguide.
Abstract:
A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).
Abstract:
In a multilayer wiring board having a wiring layer, a pad, an insulating layer provided between the wiring layer and the pad, and a plurality of connecting vias provided on the insulating layer and connecting the wiring layer to the pad, the connecting vias are provided on a peripheral edge of the pad.
Abstract:
A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant that is less than the dielectric constant of the first layer of dielectric material, and electrodes for applying a controllable voltage across the first dielectric material, thereby controlling a dielectric constant of the first dielectric material, wherein at least one of the electrodes is positioned between the first and second layers of dielectric material. The dielectric materials can be formed in various shapes and assembled in various orientations with respect to each other. The tunable dielectric structure is used in various devices including coaxial cables, cavity antennas, microstrip lines, coplanar lines, and waveguides.
Abstract:
A MICROWAVE CIRCUIT EMPLOYING MULTIPLATE TECHNIQUE IN WHICH TWO PLATES OF DIELECTRIC MATERIAL EACH CARRY ON ONE SIDE THEREOF A CONTINUOUS METAL LAYER AND ON THE OTHER SIDE CONDUCTOR TRACKS FORMING MICROWAVE CIRCUIT ELEMENTS, WITH SUCH PLATES BEING SUPERIMPOSED WITH THEIR SIDES CARRYING SUCH CONDUCTOR TRACKS IN OPPOSED RELATION, AND COMPRESSION FORCES APPLIED THERETO, CHARACTERIZED BY THE DIELECTRIC BEING IN THE FORM OF A RELATIVELY THINC COATING ON ONE SIDE OF RESPECTIVE RELATIVELY THICK METAL PLATES AND THE CONDUCTOR TRACKS BEING DISPOSED THE OUTER FACE OF THE RESPECTIVE DIELECTRIC COATINGS, THE RESPECTIVE PLATES AND ASSOCIATED DIELECTRIC COATINGS HAVING PERFORATIONS EXTENDING THERETHROUGH, THE WALLS OF THE APERTURES BEING COATED WITH A METALLIT LAYER EXTENDING FROM SELECTED CONDUCTOR TRACKS TO THE ASSOCIATED METAL PLATE TO CONDUCTIVELY CONNECT THE SAME.
Abstract:
An evacuated core circuit board (10) for dissipating heat from a heat generating electronic component, the evacuated core circuit board comprising: at least one circuit layer (12) to which the heat generating electronic component (14) is electronically coupled; a base layer (16) a comprising a body structure (19) having a substantially hollow interior (20); and a dielectric layer (18) provided between at least a portion of the circuit layer (12) and the base layer (16), wherein the hollow interior (20) is at least partially evacuated.
Abstract:
A method for producing lighting devices, comprising at least one lighting module (20). The method comprises the stages of: - providing a plurality of lighting modules (20), wherein each lighting module comprises a first set of contacts placed at a first end of said lighting module (20) and a second set of contacts (204c, 204d) placed in corresponding positions at a second end of said lighting module (20); - connecting together a plurality of the lighting modules (20) for forming a series of lighting modules (20), wherein each lighting module (20a) is connected to the next lighting module (20b) by means of interconnecting elements (10) which connect the first set of contacts of each lighting module (20a) to the second set of contacts of the next lighting module (20b); and - cutting the series of lighting modules (20) in lighting devices comprising at least one lighting module (20), wherein the interconnecting elements (10) of the last lighting module of each lighting device are cut along their transverse axes. In particular, the interconnecting elements (10) comprise a base plate and a hollow portion in order to form female connectors when the interconnecting elements (10) are cut along their transverse axes.
Abstract:
A method is provided for forming a waveguide in a printed circuit board, This may include forming a trench in a printed circuit substrate and forming at least one metalized surface along the trench. A metalized capping surface may be provided over the trench so as to form the waveguide structure.
Abstract:
A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).