摘要:
A metallized porous fluorinated polymer in which at least the inside surfaces are coated with a hydrophilic fluorinated polymer and the surface of the hydrophilic polymer coated with a metal film and a process for its manufacture.
摘要:
A small, high performance, multifunctional high frequency circuit that is multiband and multimode compatible reduces loss from a switch formed on the output side of a final stage amplification unit. The final stage amplification unit power amplifies an input signal and outputs an amplified signal. A first matching circuit impedance converts the amplified signal input thereto at a first input impedance, and outputs a first impedance-converted signal at a first output impedance. A control unit that generates a control signal denoting signal path selection information. A switch unit selects one of at least two signal paths based on the control signal, passes the first impedance-converted signal at an on impedance through the selected path, and outputs the pass signal. A second matching circuit impedance converts a pass signal input thereto at a second input impedance, and outputs a second impedance-converted signal at a second output.
摘要:
In the present radio frequency device, a radio frequency circuit part and a transmission line are disposed on the top surface of a circuit board on the surface of which a ground pattern is provided, and a metal shielding cap is fixed to the circuit board so as to cover the radio frequency circuit part and the transmission path. The metal shielding cap includes: a top plate disposed above the radio frequency circuit part and substantially parallel to the circuit board; a grounded side wall being provided so as to hang down from a part of an edge of the top plate, having a spring property and being joined to the ground pattern of the circuit board, and a side wall is open except for the grounded side wall.
摘要:
A dielectric film for a printed wiring board that has excellent heat resistance, moisture resistance, insulation properties, adhesiveness, ease of handling, ease of processing, and the like, and possesses low elasticity and high elongation as stress relief functions. The dielectric film has drawn porous polytetrafluoroethylene used as the base material; this is impregnated with an adhesive or fusible resin; the post-solidification tensile modulus of elasticity is 0.1 to 1.8 GPa; and the tensile elongation at break (at 25° C.) is at least 4.0%. A semiconductor device, comprising a multilayer printed board having a plurality of circuit layers, and a semiconductor element mounted on the multilayer printed board, this semiconductor device having an insulating/adhesive layer with a stress relief function between the outermost circuit layer of the multilayer board on the side of the semiconductor element, and the circuit layer adjacent thereto; and the insulating/adhesive layer is formed from the dielectric film. Also, a printed wiring board therefor.
摘要:
A novel nucleotide sequence in the genome of Marek's disease virus (MDV) containing an open reading frame, whose expression is associated with lytic infection and tumor cell development in MDV-infected cells, is described. Also described is the use of this novel sequence for molecular diagnostics of serotype 1 MDV; and to generate a recombinant MDV by inserting one or more endogenous or exogenous genes, operably linked to a control element for expression, into a region of the MDV genome comprising the novel nucleotide sequence, wherein the insertion interrupts expression of the open reading frame.
摘要:
An integrated circuit testing device, including a small test signal generator for generating a small test signal having a small amplitude corresponding to a test signal supplied to an input terminal of a target integrated circuit to be tested; a test signal supply circuit for amplifying the small test signal generated from the small test signal generator to obtain the test signal having a predetermined power and timing, and for supplying the test signal to the input terminal of the target integrated circuit to be tested; and a controller for setting a rise time of the test signal and a fall time of the test signal at a predetermined time by adjusting the amount of power of the test signal supplied from the test signal supply circuit.