HIGH FREQUENCY SWITCHING MODULE AND METHOD FOR ADJUSTING FREQUENCY CHARACTERISTIC OF HIGH FREQUENCY CIRCUIT

摘要

There are provided a high frequency switching module, which minimizes ripples and has a desired frequency characteristic, and a method for adjusting the frequency characteristic of a high frequency circuit. A high frequency switching module is provided by integrating a high frequency switch (SW), which includes, as a switching element, a diode (D), with a high frequency filter (LPF) including inductors (L,L1) and a capacitor (C1a). The inductor (L), which constitutes a p-type high frequency filter, is connected in series and directly to the diode (D). The insertion of the inductor (L) can shift, to a lower frequency side, the cutoff frequency of a Chebyshev-type lowpass filter circuit, which is formed during ON of the diode (D), while it can minimize the ripples.