| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress deteriorated reception quality caused by a transmission signal from another radio communication unit, while preventing a reduced reception level to the possible extent, at the simultaneous operation of a plurality of radio communication units using mutually adjacent frequency bands.SOLUTION: In a communication device 1 including a first and a second communication units 10, 30, a variable frequency filter 14 passes the signal component of a first frequency band for use in the first communication unit 10 among received radio signals, and attenuates the signal component of a second frequency band for use in the second communication unit 30. When the second communication unit 30 transmits a radio signal at the reception of a radio signal by the first communication unit 10, a control unit 35 controls the variable frequency filter 14 in a manner to vary a cutoff frequency according to the frequency used in the second communication unit 30.</p> |
