Abstract:
The present invention relates to a method for manufacturing an electronic assembly (50) comprising an electronic component, a cavity and a substrate which method comprises; -providing an electronic component (10) having a first pattern with a substantially closed configuration; -providing a cover (18) on a surface of the electronic component, which cover together with said surface defines a cavity (20), the closed configuration of the first pattern substantially enclosing the cover at said surface; -providing a substrate (30) having a second pattern with a substantially closed configuration, which closed configuration at least partially corresponds to the closed configuration of the first pattern and comprises a solder pad; -disposing solder material at the solder pad; -positioning the electronic component and the substrate so as to align both the substantially closed configurations of the first and second pattern, while the substrate supports a top surface (28) of the cover; -reflow-soldering the solder material, therewith providing a soldered connection (52) between the first and second pattern. Furthermore the present invention relates to an electronic assembly (50), a cover (18) and a substrate (30).
Abstract:
In the assembly of an electronic circuit module having a baseplate (10) and circuit components (16, 19, 21) mounted on said baseplate in an automatic assembly line in which a boat is placed on a conveyor means and is conveyed between various assembly stations in order to place, fix and/or contact the circuit components (16, 19, 21) on the boat, the boat is used as the baseplate (10) of the circuit module. When the circuit module is finished, the boat thus becomes part of a device where the module is built in.
Abstract:
A shield can (1) for shielding electronic components on a PWB (printed wired board) (9) in an electronic device. The shield can (1) comprises substantially vertical side walls (3) with a lower rim (4). Vertically adjustable sections (5) are provided at the rim (4) of the side walls (3) of the shield can (1) in order to compensate for any non-planarity of the PWB (9).
Abstract:
An RF interconnect is incorporated in RF module packages (50) for direct attachment onto a multi-layer PWB (100) using compressible center conductor (fuzz button) interconnects. The module has circuitry operating at microwave frequencies. The module package includes a metal housing (52) including a metal bottom wall structure (54). The module includes a plurality of RF interconnects, which provide RF interconnection between the package (50) and the PWB (100). Each interconnect includes a feedthrough center pin (72) protruding through an opening formed in the metal bottom wall, with isolation provided by a dielectric feedthrough insulator (74). The center pin is surrounded with a ring of shield pins (76) attached to the external surface of the bottom wall of the module housing. The pins are insertable in holes (116a, 116b) formed in the PWB (100), and make contact with fuzz button interconnects (130, 132) disposed in the holes (116a, 116b). Circuitry (148, 150) connects the fuzz button interconnects (130, 132) to appropriate levels (120, 122, 124) of the PWB signal conduction.
Abstract:
A radio frequency apparatus comprising a printed circuit board 20 mounting an electronic component 21 including a coil 23 as an inductance element, a metal frame body 26 covering this printed circuit board 20 and connected to the ground, a lid 27 formed integrally with the frame body 26 , covering the inductance element 23 mounting side of the frame body 26, and a leg 28 formed by cutting and bending from the lid 27 , having a width nearly same as the width of the coil 23 , in which the leg 28 is disposed closely to the coil 23.
Abstract:
To provide a mobile communications device power amplifier module, mobile communications device terminal equipment and mobile communications device base station structured in such a manner that the mounting area of mounted parts on a mother substrate can be reduced. By the elements mounted on the multilayer substrate 56 or housed in it, the transmission voltage controlled oscillator 2B and the power amplifier 17 are structured and integrated on the same substrate.
Abstract:
A miniaturized high frequency switching device is capable of giving an optimum over-all impedance over the length of a signal path while compensating for inevitable impedance variation seen in a particular segment of the signal path. The switching device includes a contact block having fixed contacts and a movable contact. The fixed contacts and the movable contact are surrounded by an electromagnetic shield which is supported on a conductor base to be grounded therethrough for isolating the current path from a surrounding electromagnetic field. The fixed contacts are formed respectively on one ends of terminal pins provided for electrical connection to an external load circuit operating on high frequency signals. The terminal pin extends through an insulation ring fitted in the conductor base so as to be electrically insulated therefrom and form the signal path flowing a high frequency current. An impedance compensating structure is provided in the contact block for differentiating a first impedance at a first segment of a limited length along the terminal pin from a second impedance inherent to a second segment immediately adjacent the first segment so as to give a target over-all impedance, which is between the first and second impedance, over the full length of the terminal pin.
Abstract:
In a hybrid module (10) which is mounted on a mother circuit board with a first surface (18) of a substrate (11) opposed to said mother circuit board, a cavity (19) is formed on said first surface (18), and a heat-generating circuit component (13) is facedown-bonded in said cavity (19). Heat generated in the circuit component (13) is radiated to the mother circuit board through a heat radiation plate (14).