Patent ID: 6483398
Filing Date: 2002-11-19
Classification: H01L,H01P

Abstract:
A high frequency circuit module, comprising:an input terminal; an antenna terminal; a control terminal for receiving a power control signal; an antenna switch terminal; a receiving terminal; a power detection terminal; an amplifying system including a plurality of amplifying stages that are connected in series with each other and connected at a first stage of the plurality of amplifying stages to said input terminal; a filter to which an output of said amplifying system is supplied; an antenna switch circuit connected to an output terminal of said filter, said antenna switch terminal, said receiving terminal and said antenna terminal respectively; and a directional coupler for detecting an output of said amplifying system; and wherein a power of said amplifying system is controlled with a power control signal supplied to said control terminal, and said directional coupler includes a first line to which said output of said amplifying system is supplied and a second line for outputting a signal to form the power control signal to be supplied to said control terminal, and a width of the first line is different from a width of the second line.