Abstract: A design aid apparatus includes an input section, an antenna propensity determination section, an output section, and a memory storing design data for a plurality of structures comprising an electronic device to be designed. Conductivity of a structure is determined based on conductivity information of the structure read out from the memory. The antenna propensity determination section determines a contact relation, which expresses a state of electrical contact between a conductive structure having conductivity and another conductive structure, based on information relating to shapes and arrangements of structures stored in the memory. A length of a route between a reference conductive structure and the conductive structure is determined. The antenna propensity of the electronic device is evaluated based on the route length.

Abstract: A circuit board device suppress with a small number of terminal elements unwanted irradiation originating between a power supply layer and a ground layer, even when a configuration of the power supply layer and the ground layer on the circuit board is complex, and a design support device thereof. The circuit board device has a power supply layer and a ground layer disposed in opposition to one another. A dielectric is disposed between the power supply layer and the ground layer. A power supply surface is divided into two power supply surfaces and by a slit having a generally T-shaped configuration to form power supply surface edges. The power supply surface edges retain across a predetermined length L a characteristic impedance present between the power supply layer and the ground layer. A terminal load is connected to a terminal portion of the power supply surface edges.

Abstract: A design aid apparatus includes an input section, an antenna propensity determination section, an output section, and a memory storing design data for a plurality of structures comprising an electronic device to be designed. Conductivity of a structure is determined based on conductivity information of the structure read out from the memory. The antenna propensity determination section determines a contact relation, which expresses a state of electrical contact between a conductive structure having conductivity and another conductive structure, based on information relating to shapes and arrangements of structures stored in the memory. A length of a route between a reference conductive structure and the conductive structure is determined. The antenna propensity of the electronic device is evaluated based on the route length.

Abstract: A circuit board device suppress with a small number of terminal elements unwanted irradiation originating between a power supply layer and a ground layer, even when a configuration of the power supply layer and the ground layer on the circuit board is complex, and a design support device thereof. The circuit board device has a power supply layer and a ground layer disposed in opposition to one another. A dielectric is disposed between the power supply layer and the ground layer. A power supply surface is divided into two power supply surfaces and by a slit having a generally T-shaped configuration to form power supply surface edges. The power supply surface edges retain across a predetermined length L a characteristic impedance present between the power supply layer and the ground layer. A terminal load is connected to a terminal portion of the power supply surface edges.