Abstract: An electronic control circuit for a voltage variable capacitor, the electronic control circuit comprising a plurality of voltage variable capacitors, a plurality of resistors, and a plurality of variable electrical power sources wherein the plurality of voltage variable capacitors, the plurality of resistors, and the plurality of variable electrical power sources are electrically interconnected to form an electronic bias circuit for adjusting a capacitance of the plurality of voltage variable capacitors.

Abstract: An enhanced ceramic layer is produced for use in laminated ceramic devices. A layer of unfired ceramic material is provided and a coating of dielectric material (preferably alumina) is applied on at least one surface. The dielectric material forms a reaction barrier between excess glass forced to the surface during firing and metallization positioned on the coating. The coating can be applied by screen printing, spraying a slurry of dielectric material, or spraying a slurry of dielectric material and an adhesive allowing low pressure lamination.

Abstract: A voltage variable capacitor includes a supporting substrate with a doped layer, an insulating layer positioned on the doped layer, and first, second, and third conductive segments positioned on the insulating layer parallel to the doped layer and spaced from the doped layer by the insulating layer so as to define first, second, and third capacitors. The first, second, and third conductive segments serve as external contacts and the opposed terminals of the first, second, and third capacitors are coupled together through the doped layer. In a preferred embodiment, the substrate is a semiconductor wafer and the doped layer is epitaxially grown. The insulating layer is a high dielectric constant material, such as zirconium titanate or material with a similar dielectric constant and the segments are gold.

Abstract: Multiphase ceramic materials for use in multilayered device fabrication may be fabricated by providing novel glassy precursor materials of a preferred composition, with operable amounts of a non-glassy filler materials. The combined materials are fired at appropriate temperatures, so that a non-glassy anorthite type phase is formed. Material so fabricated is formed in a self-limiting process, in that reaction between the glassy precursor material and the non-glass filler material is terminated when one constituent of the glassy precursor material is fully consumed. The materials of the instant invention, fabricated according to the method disclosed herein, demonstrate excellent dielectric constant, and electrical loss characteristics.

Abstract: Multiphase ceramic materials for use in multilayered device fabrication may be fabricated by providing novel glassy precursor materials of a preferred composition, with operable amounts of a non-glassy filler materials. The combined materials are fired at appropriate temperatures, so that a non-glassy anorthite type phase is formed. Material so fabricated is formed in a self-limiting process, in that reaction between the glassy precursor material and the non-glass filler material is terminated when one constituent of the glassy precursor material is fully consumed. The materials of the instant invention, fabricated according to the method disclosed herein, demonstrate excellent dielectric constant, and electrical loss characteristics.

Abstract: A transparent film of material is deposited on a PLZT plate used in a light modulator. The film is substantially less resistive than the PLZT plate and prevents light leakage in the OFF state due to space-charge accumulation. Suitable materials include SiO.sub.2 and TiO.sub.2.

Abstract: A first layer of titanium or tin is vapor deposited upon opposing major surfaces on the ceramic sensor. A second layer consisting of platinum, palladium or ruthenium is deposited over the first layer. The structure is then preferably annealed in air in order to crystallize the external layer to roughen the exterior surface and enhance adhesion. Lead wires, preferably made of Nichrome, are attached to the opposing surfaces by applying a conductive paste to the wire and surface functions, and firing the structure. The conductive paste provides a relatively low resistance, strong, mechanical bond between the lead wires and the roughened external surfaces of the structure. The first layer facilitates bonding of the second layer to the ceramic. The first and second layers cooperate to protect the ceramic from the potentially harmful glass frit contained in the conductive paste.