| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a transmission-reception duplexer circuit having a reduced circuit scale even when dealing with signals of 6 frequency bands. <P>SOLUTION: A reception signal of a reception frequency band FBr inputted from a shared terminal 10 is inputted into a BPF 15 via a circulator 12 and a circulator 11, and a reception signal of a reception band FBr2 having passed through the BPF 15 is inputted into a second radio device B connected to a second terminal 17. Reception signals of reception bands FBr1, FBr3 which have been reflected on the BPF 15 are inputted into a first radio device A connected to a first terminal 13 via the circulator 11. The transmission signals of transmission bands FBt1, FBt3 from the first radio device A pass through a first terminal 13, the circulator 11 and the circulator 12, are reflected on a BPF 16 and inputted into the shared terminal 10 from the circulator 12. A transmission signal of a transmission band FBt2 from the second radio device B passes through a second terminal 17, the BPF 16 and the circulator 12 and is outputted to the shared terminal 10. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
