Equivalent circuit of inductance element, method of analyzing circuit constants, simulator, and record media

A method of analysis of circuit constants of an equivalent circuit of an inductance element, wherein:

• the inductance element comprises a parallel circuit whereto a first inductance, a first capacitance and a first resistance are connected in parallel,
• a second capacitance is connected to said first resistance in series,
• a second inductance is connected to said first resistance in parallel;
• a second resistance connected to said parallel circuit in series;
• at least one closed circuit magnetically coupled to said first inductance by mutual inductance, and having a resistance and an inductance;
• and
• the method is characterized by obtaining desired impedance frequency characteristic of the inductance element by adjusting the circuit constant of said at least one closed circuit.

A method for analyzing circuit constants of an equivalent circuit of an inductance element, wherein:

• the inductance element comprises a parallel circuit whereto a first inductance, a first capacitance and a first resistance are connected in parallel;
• a second capacitance is connected to said first resistance in series;
• a second inductance is connected to said first resistance in parallel;
• a second resistance is connected to said parallel circuit in series;
• at least one closed circuit magnetically coupled to said first inductance by mutual inductance, and having a resistance and an inductance;
• the method comprising the steps of:
• determining circuit constants of the first inductance by measured impedance value whereat impedance of an inductance element is analogous to reactance component in the frequency domain at the resonance point or below,
• determining circuit constants of the first resistance by measuring resistance component of an inductance element at the resonance point,
• determining, in the frequency domain at the resonance point or above, circuit constants of the first capacitance by making use of measured values if the reactance component of the measured values are analogous to the reactance component of impedance of the inductance element, or making use of measured values of resistance component at the frequency, circuit constants of said first inductance, and circuit constants of said first resistance if the reactance component is not found,
• calculating changes of a reactance component for frequencies in an equivalent circuit of an inductance element, based on the circuit constants found through said steps,
• determining circuit constants and coupling coefficients of a closed circuit so that frequency changes of a reactance component of the equivalent circuit obtained through said steps are analogous to the measured frequency changes of a reactance component of an inductance element,
• redetermining circuit constants of the first resistance by making use of the circuit constants found through said steps,
• determining circuit constants of said second inductance and said second capacitance depending on the result of comparing the frequency whereat a resistance component of impedance of an inductance element agrees with a measured reactance component and the frequency whereat reactance component shows it maximum, and
• determining circuit constants of said second resistance.

In circuit constant analysis methods for analyzing circuit constants of an equivalent circuit wherein the first inductance, the first capacitance, and the first resistance are connected in parallel, and not less than one closed circuits having resistance and inductance are magnetically coupled to said first inductance, a circuit constant analysis method of an inductance element characterized by comprising the steps of:

• determining circuit constants of the first inductance based on measured impedance value whereat impedance of the inductance element are analogous to reactance component in the frequency domain at the resonance point or below;
• determining circuit constants of the first resistance by measuring resistance component of an inductance element at the resonance point;
• determining, in the frequency domain at the resonance point or above, circuit constants of the first capacitance by making use of measured values if the measured reactance component is analogous to the reactance component of impedance of the inductance element, or making use of measured values of resistance component at the frequency, circuit constants of said first inductance, and circuit constants of said first resistance if the reactance component is not found;
• calculating changes of reactance component for frequencies in an equivalent circuit of an inductance element, based on the circuit constants found through said steps;
• determining circuit constants and coupling coefficients of said closed circuit so that frequency changes of reactance component of the equivalent circuit obtained through said steps are analogous to the frequency changes of measured reactance component of an inductance element.