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1. (WO2018139399) POWER AMPLIFIER MODULE, METHOD FOR CONTROLLING POWER AMPLIFIER MODULE, AND HIGH-FREQUENCY FRONT END CIRCUIT

Pub. No.:    WO/2018/139399    International Application No.:    PCT/JP2018/001741
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Tue Jan 23 00:59:59 CET 2018
IPC: H03F 3/24
H03F 1/32
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: HIROBE, Masakazu
廣部 正和
Title: POWER AMPLIFIER MODULE, METHOD FOR CONTROLLING POWER AMPLIFIER MODULE, AND HIGH-FREQUENCY FRONT END CIRCUIT
Abstract:
A power amplifier module (10) is provided with: an amplifier circuit (11); a bias circuit (12); a constant-voltage-generating circuit (14); a constant-current-generating circuit (15); a switching unit (16); and a control unit (17) for controlling the switching operation of the switching unit (16). The control unit (17) switches the switching unit (16) so as to connect the constant-voltage-generating circuit (14) to an input port of the bias circuit (12) when the output mode is a first output mode in which high-frequency signals of a designated output power or greater are outputted from the amplifier circuit (11), and switches the switching unit (16) so as to connect the constant-current-generating circuit (15) to the input port of the bias circuit (12) when the output mode is a second output mode in which power of less than a designated output power is outputted from the amplifier circuit (11).