Abstract:
A circuit module includes a flexible sheet of non-conductive material that is sufficiently flexible to permit the sheet to be rolled and which supports a circuit. The circuit has at least one loop and first and second contacts for coupling the loop to an external device.
Abstract:
The present invention relates to an integrated-circuit device comprising a multitude of separate rigid substrate islands (202 to 208) with circuit elements, a respective substrate island being connected to respective neighbor substrate islands by respective elastically deformable connections (210 to 222), which contain at least one respective signaling layer that is made of an electrically conductive material. At least one elastically deformable connection between substrate islands has a signaling layer, which is not electrically connected and thus forms a dummy signaling layer (210a to 210c), and the elastically deformable connections, which connect a respective substrate island to respective neighbor substrate islands along a first direction, have an elastic deformability in the first direction governed by respective moduli of elasticity, the ratio of which is between 0.5 and 2.0. This reduces the inhomogeneity of strain in the network of substrate islands that is formed by the integrated-circuit device. The functional reliability of the integrated-circuit device of the invention is increased over prior-art devices without restricting the freedom of circuit design.
Abstract:
A method for connecting circuit boards, comprising: (i) preparing a first circuit board having connection parts assigned to end parts of a plurality of conductor wirings, and a second circuit board having connection parts assigned to corresponding end parts of a plurality of conductor wirings; (ii) disposing the connection parts of the first circuit board to face the connection parts of the second circuit board with a thermosetting adhesive film between the connection parts of the circuit boards; and (iii) applying heat and pressure to the connection parts and to the thermosetting adhesive film sufficiently high to thoroughly push away the adhesive film so as to establish electrical contact between connection parts of the circuit boards facing each other and to allow for curing of the adhesive; wherein the conductor wirings constituting the connection parts of at least one of the first and second circuit boards contain non-linear wirings.
Abstract:
A module for a surface acoustic wave oscillator includes a substrate having a top surface, a bottom surface and peripheral side faces. Several castellations are located about the outer peripheral side faces thereof. The castellations form an electrical connection between the top and bottom surfaces of the substrate. Connection pads are mounted on the top surface and are adapted for connection to the castellations. An oscillator circuit and a surface acoustic wave device are mounted on the top surface and connected to the connection pads. A cover is mounted over the substrate and has at least one tab adapted to be fitted within a respective one of the castellations. The overall module with the cover has a dimension of approximately 5mm in width, 7mm in length, and 2.7mm in height.
Abstract:
According to some embodiments, a device includes a first conductive plane electrically coupled to a first terminal associated with a first polarity and a second terminal associated with the first polarity, a second conductive plane electrically coupled to a third terminal associated with a second polarity, and a dielectric disposed between the first conductive plane and the second conductive; plane. A first capacitance is present between the first terminal and the third terminal, a second capacitance is present between the second terminal and the third terminal, and the first capacitance and the second capacitance may be substantially dissimilar.
Abstract:
Zur elektrischen Anpassung eines elektrischen Bauelements ist ein Netzwerk mit einer Transformationsleitung angegeben, die in oder auf einem vorzugsweise keramischen Substrat ausgebildet ist. Sie weist eine vorgegebene elektrische Länge zur Erzielung einer gewünschten Phasenschiebung auf und umfaßt zumindest zwei miteinander verbundene, jeweils gefaltete, in verschiedenen Leiterebenen angeordnete elektrische Leiter (LE), deren gerade Abschnitte rechtwinklig miteinander verbunden sind. Zueinander parallele, in unterschiedlichen Leiterebenen liegende Leitungsabschnitte überlappen teilweise und sind auf diese Weise kapazitiv miteinander gekoppelt, wobei durch die Einstellung der einzelnen Überlappungsflächen die kapazitive Kopplung angepaßt und so die vorgegebene elektrische Länge und die vorgegebene Impedanz der Transformationsleitung erreicht ist.
Abstract:
A non-uniform transmission line includes at least one patterned conductive layer 8102, 104), a dielectric layer (103) adjacent to the patterned conductive layer(s) (102, 104), and insulating layer (101, 105) surrounding the patterned conductive layer(s) and the dielectric layer.
Abstract:
Apparatus for protection against undesired thermal transfer comprising a printed circuit board (15), an infrared sensing device (100) electrically connected to the printed circuit board (15) by way of an electrical lead (12), and solid thermally insulating material (18, 20) between the board (15) and the device (100) and protecting that side of the device (100) facing the board (15) from thermal transfer from the board (15) to the device (100). The solid thermally insulating material (18) bounds a passageway (19) in the material (18) through which the lead (12) passes. Advantageously, the infrared sensing device (100) is in thermal communication with a heat sink (14) and the solid thermally insulating material (20) protects the heat sink (14) also against such thermal transfer from the board (15), i.e. thermal radiation from the board (15) and thermal convection currents induced by the board (15).