Abstract:
The present invention uses metallization termination techniques to reduce the electro-magnetic field scattering at the edges of metallized areas. The metallization termination techniques provide a gradual transition from high conductivity areas to high impedance areas. The mobile phone antenna illuminates the PCB allowing currents to flow on the PCB. When the currents reach edges of the PCB they flow through a region of increasingly high impedance without reflecting back or scattering.
Abstract:
A signal transmission system including: a first connector apparatus, and a second connector apparatus that is coupled with the first connector apparatus. The first connector apparatus and the second connector apparatus are coupled together to form an electromagnetic field coupling unit, and a transmission object signal is converted into a radio signal, which is then transmitted through the electromagnetic field coupling unit, between the first connector apparatus and the second connector apparatus.
Abstract:
A control board (10) has a pattern for a low-voltage circuit including a ground pattern connectable to a ground and a pattern for a high-voltage circuit including a ground pattern. The patterns for the low-voltage and high-voltage circuits each have one or more ground-connection lands (13a, 13b) configured to connect the ground patterns thereof to each other via one or more capacitors.
Abstract:
A card manufacturing technique and the resulting card are provided. The card has a ground and/or power layer (112) extending to the edges of a circuit board for electrostatic discharge protection but also has gaps (112a) at the edge of the ground and/or power layer (112) to avoid short circuiting with conductive segments (160) of another layer deformed when the card is trimmed during manufacture.
Abstract:
A high-frequency device having high-frequency-signal-treating circuits in and on a laminate substrate comprising pluralities of dielectric layers having conductor patterns, the high-frequency-signal-treating circuits having amplifier circuits and switch circuits; terminals including input and output terminals of high-frequency signals, the power supply terminals of the amplifier circuits and the power supply terminals of the switch circuits being formed on one main surface of the laminate substrate; power supply lines each having one end connected to each of the power supply terminals of the amplifier circuits and power supply lines each having one end connected to each of the power supply terminals of the switch circuits being formed on one dielectric layer to constitute a power supply line layer; a first ground electrode being arranged on the side of the main surface with respect to the power supply line layer, the first ground electrode overlapping at least part of the power supply lines in a lamination direction; a second ground electrode being arranged on the opposite side of the first ground electrode with respect to the power supply line layer, the second ground electrode overlapping at least part of the power supply lines in a lamination direction; and the high-frequency-signal-treating circuits being arranged on the opposite side of the power supply line layer with respect to the second ground electrode.