| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an antenna demultiplexer that sufficiently reduces leakage of a transmitting signal to a receiver without increasing the transmission loss of a receiving signal. <P>SOLUTION: The antenna demultiplexer includes: a common terminal 105 connected to an antenna 103; an output terminal 109 that receives a receiving signal from the antenna 103; and an input terminal 139 that receives a transmitting signal transmitted from the antenna 103. The antenna demultiplexer further includes: a transmission filter 145 which is connected between the common terminal 105 and the input terminal 139, and suppresses signals other than the transmitting signal; a receiving filter 141 which is connected between the common terminal 105 and the output terminal 109, and suppresses signals other than the receiving signal; and a noise canceler 148 connected from the input terminal 139 toward the output terminal 109. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
