| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable communication terminal capable of suppressing the removal of reception signals of broadcast waves close to the frequency of transmission waves when removing the transmission waves transmitted to a mobile object base station by a band-reject filter. <P>SOLUTION: The portable communication terminal is composed of a cellular communication part 30 for transmitting transmission signals to the mobile object base station, a band-reject filter 12 for rejecting the reception signals of the broadcast waves and removing the reception signals of the transmission waves transmitted by the cellular communication part 30, a reproduction part 20 for reproducing a broadcast program on the basis of the reception signals after passing through the band-pass filter 12, and a filter characteristic adjustment part 42 for changing the center frequency of the band-reject filter 12 on the basis of transmission output by the cellular communication part 30. The filter characteristic adjustment part 42 changes the center frequency of the band-reject filter 12 so as to be away from the frequency band of the broadcast waves as the transmission output gets smaller. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
