发明名称 |
Förfarande och anordning för att sända och mottaga RF-signaler vid oli ka radiogränssnitt av dataöverföringssystem |
摘要 |
<p>A method and arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which substantially comprises one receive signal branch and one transmit signal branch. Mixing frequencies of the different systems are generated by a single common by use of an output frequency divider in combination with the synthesizer, and by use of filtering corresponding to a system channel bandwidth by means of a controllable low—pass filter operating at baseband frequency.</p> |
申请公布号 |
FI982559(A) |
申请公布日期 |
2000.05.27 |
申请号 |
FI19980002559 |
申请日期 |
1998.11.26 |
申请人 |
NOKIA MOBILE PHONES LTD,, |
发明人 |
VAEISAENEN,,RISTO;KALTIOKALLIO,,KIM |
分类号 |
H04B1/04;H04B1/00;H04B1/16;H04B1/30;H04B1/40;H04B7/26;(IPC1-7):H04B |
主分类号 |
H04B1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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