Patent attributes
A high-frequency switching circuit module includes a high-frequency switch that includes an FET switching element and that selectively connects between a common input/output terminal and one of input/output terminals, and a matching circuit that is provided to the common input/output terminal Pc and is not provided to the input/output terminals. Although a non-selected input/output terminal of the high-frequency switch acts as a capacitor and the impedance between the common input/output terminal and a selected input/output terminal is displaced from a normal impedance, the displacement is corrected by the matching circuit connected to the common input/output terminal such that the impedance viewed from the common input/output terminal Pc to the high-frequency switch is made equal to the normal impedance. Accordingly, a high-frequency switching circuit module having a small overall size and achieving impedance matching for each terminal is provided.
