Title:
HIGH FREQUENCY CIRCUIT, COMMUNICATION DEVICE, AND COMMUNICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/032645
Kind Code:
A1
Abstract:
A high frequency circuit (1) comprises: a power amplification circuit (10) capable of handling a predetermined power class permitting a first maximum output power (P1max); and a filter circuit (60) connected to the power amplification circuit (10) and having a passband including an uplink operation band of a band A for FDD. The power amplification circuit (10) (i) amplifies a signal of the band A so that the output power of the signal of the band A is limited by the first maximum output power (P1max) in sub-periods (SD11 and SD12) if the SAR does not exceed a reference value, and (ii) amplifies the signal of the band A so that the output power of the signal of the band A is limited by the first maximum output power (P1max) in the sub-period (SD11) and is limited by a second maximum output power (P2max) in the sub-period (SD12) if the SAR exceeds the reference value.
Inventors:
HITOMI SHINYA (JP)
TANAKA SATOSHI (JP)
MORI HIROTSUGU (JP)
TANAKA SATOSHI (JP)
MORI HIROTSUGU (JP)
Application Number:
PCT/JP2022/030815
Publication Date:
March 09, 2023
Filing Date:
August 12, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/04; H04B1/3827
Domestic Patent References:
| WO2015029298A1 | 2015-03-05 |
Foreign References:
| JP2011521499A | 2011-07-21 | |||
| US20050124305A1 | 2005-06-09 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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