Transformer having high degree of coupling, electronic circuit, and electronic device

摘要

A transformer having a high degree of coupling is connected between, for example, an antenna element and a power feed circuit. The transformer having a high degree of coupling includes a first inductance element connected to the power feed circuit and a second inductance element coupled to the first inductance element. A first end of the first inductance element is connected to the power feed circuit and a second end of the first inductance element is connected to the antenna element. A first end of the second inductance element is connected to the antenna element and a second end of the second inductance element is grounded.