Abstract:
A surface-mount electronic component includes a terminal electrode film that is formed by various film-forming processes on the surface of a main unit of the surface-mount electronic component. A lead-in terminal extends from an internal electrode and is arranged in the surface-mount electronic component so as to extend up to the surface of the main unit for establishing electrical connection between the internal electrode and the terminal electrode film. In the surface-mount electronic component, the lead-in terminal of the internal electrode extends to at least one of the surfaces of the main unit, except a surface-mount surface of the main unit and the surface that is opposite to the surface-mount surface. An exposed portion of the lead-in terminal is coated by at least one of the terminal electrode film and a protective film.
Abstract:
A multilayer microelectronic circuit to be directly mounted on a substrate and to be used, for example, as a resonator. The multilayer microelectronic circuit comprises a plurality of dielectric layers and patterned electrodes which are laminated one upon another to form a laminated structure, the dielectric layers and the patterned electrodes forming an electrical circuit. The laminated structure has side surfaces extending along a direction in which the dielectric layers and the patterned electrodes are laminated. An input line is formed at one of the side surfaces and connected with an input section of the electrical circuit. An output line is formed at one of the side surfaces and connected with an output section of the electrical circuit. A grounding line is formed at one of the side surfaces and connected with a grounding section of the electrical circuit. Additionally, a signal line formed at one of the side surfaces, for connecting sections of the electrical circuit. The signal line has an end positioned adjacent a mounting surface at which the multilayer microelectronic circuit is directly mounted on the substrate, in which the end of the signal line is separate from the mounting surface so as to be insulated from electrical contact with the substrate.
Abstract:
A voltage controlled oscillator module assembly (300) minimizes microphonics in a low profile package. Included within the module (300) are a substrate (302), VCO circuitry (308), and a ground shield (314) encapsulating the VCO circuitry. Included within the VCO circuitry (308) is at least one resonator (310) which is solderable on at least two of its surfaces. One surface of the resonator (310) is soldered to the substrate (302) while another surface of the resonator is soldered to the shield (314). An improved ground is thus provided to the resonator (310) which reduces the occurrences of microphonics while providing a low profile package for the module (300).
Abstract:
A system for packaging integrated circuit components including a ball grid array substrate with a plurality of solder balls coupled to the substrate. A semiconductor device is mounted on the substrate and electrically coupled to the solder balls. One or more terminals are coupled to the substrate and electrically coupled to said semiconductor device. A detachable module contains auxiliary component. The module comprises a body portion for containing the component and one or more electrical connectors for mating with respective terminals to hold the module to the substrate and to electrically couple the component with the semiconductor device. The terminals may also be connected to the solder balls such that a component may be optionally provided either on the circuit board or in the detachable module.
Abstract:
A dielectric resonant component includes at least one dielectric multistage resonator including one dielectric block, a plurality of inner conductor formation holes formed in the one dielectric block, an inner conductor formed on an inner surface of each of the inner conductor formation holes, and an outer conductor covering a substantially entire outer surface of the one dielectric block, the dielectric multistage resonator constituting a plurality of dielectric resonators in the one dielectric block; and a mount substrate fixedly mounted on the dielectric multistage resonator, for transmitting a signal transmission between each of the dielectric resonators of the dielectric multistage resonator and an external circuit board, when the dielectric resonant component is mounted on the external circuit board. The dielectric multistage resonator further includes a pair of input/output electrodes, and the mount substrate includes a unit for connecting the input/output electrodes of the dielectric multistage resonator to a pair of input/output electrodes formed on the circuit board.
Abstract:
A surface-mountable crystal resonator (100) is provided in the following manner. A first predetermined electrode pattern (105) and a second predetermined electrode pattern (201) are formed on a first major surface (104) and a second major surface (200), respectively, of a piezoelectric crystal substrate (101). Additionally, a first predetermined attachment electrode pattern (106), electrically coupled to the second predetermined attachment electrode pattern, and a second predetermined attachment electrode pattern (202), electrically coupled to the first predetermined attachment electrode pattern, are formed on a first attachment area (102) and a second attachment area (103), respectively. The first and second attachment areas include extensions (107) that, when mounted, allow a conductive adhesive (301), placed on a mounting substrate (300), to flow and establish electrical connections with the first and second predetermined attachment electrode patterns.
Abstract:
A voltage-controlled oscillator (VCO) mounted on a laminated printed circuit board which has a surface layer, a plurality of intermediate layers, and a back layer. Various component parts of the VCO are arranged on the surface layer. One of the intermediate layers which underlies the surface layer constitutes a ground potential layer and is removed at locations thereof corresponding to the area where the parts of the VCO are positioned.
Abstract:
An improved strip line component and method of manufacture are disclosed that permit strip line circuits to be packaged in component form and to be soldered directly to conventional circuit boards. Electrical contact pads are formed on the side of the strip line component during fabrication by drilling holes through the multilayer laminar assembly and plating the holes with a conductive material. The laminar assembly is then cut along lines that intersect the holes, thereby exposing plated indentations along the sides of the cut component. The component so cut can then be soldered to a circuit board using the plated indentations. The method is well adapted to the economical manufacture of large numbers of identical components.