| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication device that simplifies circuit configuration, reduces circuit area, and reduces costs. SOLUTION: A radio transmission circuit includes: an RFIC (1) and a transmission portion (2). The RFIC (1) has 1-port RF output configuration for transmission output or 2-port RF output configuration for high-band output and low-band output. The transmission portion (2) includes: a wideband power amplifier (21) for a multi-communication system and multi-band transmission; a band switch (24) for outputting the output of the wideband power amplifier to a signal path corresponding to each of transmission bands; a first matching correction circuit (22) for matching between the input of the wideband power amplifier and the output of the RFIC in each transmission band; and a second matching correction circuit (23) for matching between the output of the wideband power amplifier and the input of the band switch in each transmission band. COPYRIGHT: (C)2011,JPO&INPIT
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