COMPUTER PROGRAM FOR ANTENNA DESIGN, ANTENNA DESIGN DEVICE AND ANTENNA DESIGN METHOD

摘要

PROBLEM TO BE SOLVED: To provide a computer program for designing antennae that can optimize a parameter defining a shape of the antenna and a constant of a circuit element of a matching circuit.;SOLUTION: A computer program for designing antennas includes a command to make a computer serve as execution of: obtaining input impedance of a single piece of an antenna or antennae and entire matching circuit in a design frequency for each value of the shape parameter as changing a value of a shape parameter defining a shape of an antenna within a prescribed range; calculating an evaluation value serving as a value corresponding to an absolute value of a first-order differential value of the input impedance for each value of the shape parameter; and determining a value of the shape parameter when the evaluation value is minimized or maximized, and a constant of a circuit element included in the matching circuit as a design value of the shape parameter of the antenna and a design value of the constant of the circuit element.;SELECTED DRAWING: Figure 12;COPYRIGHT: (C)2017,JPO&INPIT