High frequency tuning circuit with input tuning transformer

摘要

The input tuning transformer (T1) primary coil (L1) serves as an input, while its secondary coil (L2) is used in forming a first tuning circuit (11). An output tuning transformer (T2) has a primary (L3) used to form a second tuning circuit (12), while its secondary (L4) serves as an output coil. The two tuning transformers are interconnected and form a dual tuning circuit, in which the Q factor of the output tuning transformer is adjusted to twice the value of that of the input tuning transformer.