Telecommunications – Transmitter and receiver at same station – With frequency stabilization
Reexamination Certificate
1999-11-25
2008-08-19
Le, Lana (Department: 2618)
Telecommunications
Transmitter and receiver at same station
With frequency stabilization
C455S234100, C455S307000
Reexamination Certificate
active
07415247
ABSTRACT:
A method and an 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 synthesizer 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.
REFERENCES:
patent: 4395776 (1983-07-01), Naito et al.
patent: 5483691 (1996-01-01), Heck et al.
patent: 5511235 (1996-04-01), Duong et al.
patent: 5564076 (1996-10-01), Auvray
patent: 5694414 (1997-12-01), Smith et al.
patent: 5758271 (1998-05-01), Rich et al.
patent: 5794119 (1998-08-01), Evans et al.
patent: 5796772 (1998-08-01), Smith et al.
patent: 5825809 (1998-10-01), Sim
patent: 5896562 (1999-04-01), Heinonen
patent: 5926749 (1999-07-01), Igarashi et al.
patent: 5926750 (1999-07-01), Ishii
patent: 5953641 (1999-09-01), Auvray
patent: 6029052 (2000-02-01), Isberg et al.
patent: 6151354 (2000-11-01), Abbey
patent: 6256511 (2001-07-01), Brown et al.
patent: 6308050 (2001-10-01), Eklof
patent: 6484038 (2002-11-01), Gore et al.
patent: 6954624 (2005-10-01), Hamalainen
patent: 0581573 (1994-02-01), None
patent: 0631400 (1994-12-01), None
patent: 0633674 (1995-01-01), None
patent: 0653851 (1995-05-01), None
patent: 0798880 (1997-10-01), None
patent: 0800283 (1997-10-01), None
patent: 0809366 (1997-11-01), None
patent: 0813312 (1997-12-01), None
patent: WO 99/01933 (1999-01-01), None
Behzad Razavi, RF Microelectronics, 1998, Prentice Halls, Inc., 10th Edition, pp. 150-153.
Proof of publication date (Nov. 6, 1997) of book Razavi, Behzad, RF Microelectronics, Prentice Hall, 1st edition by amazon.com under product detail section, and and paper of when it was received by USPTO (Nov. 23, 1998).
“Software Radio: Technology & Implementation”, ICCT'98, Weidong et al.
* Corresponds to Finnish Patent Application No. FI 100286.
Kaltiokallio Kim
Väisänen Risto
Banner & Witcoff , Ltd.
Le Lana
Nokia Corporation
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