| 摘要 |
The invention relates to a method for filtering radio frequency signals in so called multiband radio communication devices that operate in several frequency ranges and to a communication device operating in several frequency ranges. In the method according to the invention, the desired frequency range is selected so that of the amplifiers (62a, 62b, 62c; 72a, 72b, 72c) placed between the filters (61, 63) on the reception branch (11) or correspondingly between the filters (71, 73) on the transmission branch (12) the amplifiers that control the desired signal paths are activated.
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