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1. (WO2015045538) HIGH FREQUENCY POWER AMPLIFIER, HIGH FREQUENCY FRONT END CIRCUIT, AND WIRELESS COMMUNICATION DEVICE

Pub. No.:    WO/2015/045538    International Application No.:    PCT/JP2014/067329
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Jul 01 01:59:59 CEST 2014
IPC: H04B 1/40
H03F 3/24
H04B 1/10
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: OBIYA, Hidenori
帯屋秀典
HAYAFUJI, Hisao
早藤久夫
WADA, Takaya
和田貴也
HITOMI, Shinya
人見伸也
Title: HIGH FREQUENCY POWER AMPLIFIER, HIGH FREQUENCY FRONT END CIRCUIT, AND WIRELESS COMMUNICATION DEVICE
Abstract:
A high-frequency power amplifier (10) is provided with a first high-frequency amplifier (11), a final high-frequency amplifier (12), and a tunable filter (13). The tunable filter (13) is connected between the first high-frequency amplifier (11) and the final high-frequency amplifier (12). The first high-frequency amplifier (11) and the final high-frequency amplifier (12) are multimode/multiband power amplifiers. The frequency range of a transmission signal in a communication band for transmitting/receiving signals is within the passband of the tunable filter (13), and the frequency range of a reception signal is adjusted so as to be within an attenuation band. The tunable filter (13) switches between the passband and the attenuation band depending on the communication band for transmitting/receiving signals.