Inductor, resonant circuit, semiconductor integrated circuit, oscillator, and communication apparatus

A resonant circuit, comprising:

• an inductor;
• and
• a variable capacitance device being provided in parallel to the inductor,
• the inductor including:
• a plurality of insulating layers being stacked;
• and coil patterns respectively provided on predetermined layers of the insulating layers,
• at least two of the insulating layers having the respective coil patterns being provided thereon,
• the coil patterns being electrically connected to each other.

A semiconductor integrated circuit, comprising a resonant circuit,

• the resonant circuit including:
• an inductor;
• and
• a variable capacitance device being provided in parallel to the inductor,
• the inductor having:
• a plurality of insulating layers being stacked:
• and coil patterns respectively provided on predetermined layers of the insulating layers,
• at least two of the insulating layers having the respective coil patterns being provided thereon, and
• the coil patterns being electrically connected to each other.

An oscillator, comprising a resonant circuit,

• the resonant circuit including:
• an inductor;
• and
• a variable capacitance device being provided in parallel to the inductor,
• the inductor having:
• a plurality of insulating layers being stacked;
• and coil patterns respectively provided on predetermined layers of the insulating layers,
• at least two of the insulating layers having the respective coil patterns being provided thereon, and
• the coil patterns being electrically connected to each other.

A communication apparatus, comprising an oscillator,

• the oscillator including a resonant circuit having:
• an inductor;
• and a variable capacitance device being provided in parallel to the inductor,
• the inductor having:
• a plurality of insulating layers being stacked;
• and coil patterns respectively provided on predetermined layers of the insulating layers,
• at least two of the insulating layers having the respective coil patterns being provided thereon, and
• the coil patterns being electrically connected to each other.