SEMICONDUCTOR DEVICE AND ADJUSTMENT METHOD OF FILTER CIRCUIT

摘要

A semiconductor device includes a filter circuit operable to pass a desired signal component of a high-frequency signal inputted and operable to attenuate a harmonic component of an integral multiple of the desired signal, wherein the filter circuit includes a first inductor and a second inductor coupled in series to a signal line transmitting the high-frequency signal, a first variable capacitor coupled between a power supply line and a node of the first inductor and the second inductor, and a second variable capacitor coupled between the signal line and the power supply line.

主权项

1. A semiconductor device comprising:
a filter circuit operable to pass a desired signal component of a high-frequency signal inputted and operable to attenuate a harmonic component of an integral multiple of the desired signal, wherein the filter circuit comprises: a first inductor and a second inductor coupled in series to a signal line transmitting the high-frequency signal; a first variable capacitor coupled between a power supply line and a node of the first inductor and the second inductor; and a second variable capacitor coupled between the signal line and the power supply line.