发明名称 |
WIRELESS CIRCUIT AND FREQUENCY PAIR DETERMINATION METHOD |
摘要 |
A wireless circuit that can be used in a plurality of frequency bands even if its duplexer is formed of current variable frequency filters is provided. The circuit includes a transmission-reception antenna 911, a variable frequency duplexer 131, a double-pole six-throw switch 923, an RFIC 180, and a controller 190 which executes switching operations in accordance with control signals. The RFIC 180 determines a pair of frequency bands for transmission and reception signals input to the variable frequency duplexer 131 and generates and sends the control signals to perform switching control operations to connect a transmission port corresponding to the determined transmission frequency band with the transmission terminal of the variable frequency duplexer 131 and to connect a reception port corresponding to the determined reception frequency band with the reception terminal of the variable frequency duplexer 131 and to perform a frequency switching operation of the variable frequency duplexer 131. |
申请公布号 |
EP2784942(B1) |
申请公布日期 |
2016.04.27 |
申请号 |
EP20130819933 |
申请日期 |
2013.07.10 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
OKAZAKI, HIROSHI;KAWAI, KUNIHIRO;NARAHASHI, SHOICHI;TAKAGI, YUTA;FURUTA, TAKAYUKI |
分类号 |
H04B1/00;H04B1/50 |
主分类号 |
H04B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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