Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Reexamination Certificate
2005-09-06
2005-09-06
Phan, Dao (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
C342S174000
Reexamination Certificate
active
06940453
ABSTRACT:
A method for calibrating a reception signal in a smart antenna system includes: locally generating a reference signal, converting the reference signal into an RF signal, and dividing the RF signal into as many signals as the number of antennas.Phase information of the divided RF signals is then detected. This is followed by outputting a plurality of reference signals having the same phases by performing phase shifting operation, converting an RF signal into a baseband signal, and calibrating the baseband signal by multiplying the baseband signal by a calibration vector. An apparatus for calibrating a reception signal in a smart antenna system includes a reference signal generating unit and an array antenna unit. The reference signal generating unit includes a local reference signal generator, an RF converter, a splitter, a phase detector, and a phase shifter. The array antenna unit includes an antenna, a front-end part, an RF transmitter, an RF receiver, and a baseband processor. A process of calculating complex conjugate numbers and a complex conjugate number calculator may also be included. In this method, because the same reference signals are input into the array antenna unit, the calibration process may be greatly simplified.
REFERENCES:
patent: 3727223 (1973-04-01), O'Meara
patent: 4166274 (1979-08-01), Reudink et al.
patent: 4725844 (1988-02-01), Goodwin et al.
patent: 5117377 (1992-05-01), Finman
patent: 5807257 (1998-09-01), Bridges
patent: 6058318 (2000-05-01), Kobayakawa et al.
patent: 6157340 (2000-12-01), Xu et al.
patent: 6208287 (2001-03-01), Sikina et al.
patent: 6236839 (2001-05-01), Gu et al.
patent: 6480153 (2002-11-01), Jung et al.
patent: 6784838 (2004-08-01), Howell
patent: 2002/0089447 (2002-07-01), Li
patent: 1104122 (2001-05-01), None
patent: 1 161 002 (2001-12-01), None
patent: 1187354 (2002-03-01), None
patent: 2 342 505 (2000-04-01), None
patent: 11-312917 (1999-11-01), None
patent: 2000-216618 (2000-08-01), None
patent: 2001-156688 (2001-06-01), None
patent: 2001-332925 (2001-11-01), None
patent: 2001-352282 (2001-12-01), None
patent: 1020010088416 (2001-09-01), None
patent: 2003-0015388 (2003-02-01), None
Fleshner & Kim LLP
LG Electronics Inc.
Phan Dao
LandOfFree
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