Telecommunications – Transmitter and receiver at same station
Reexamination Certificate
2011-03-01
2011-03-01
Anderson, Matthew D (Department: 2618)
Telecommunications
Transmitter and receiver at same station
C455S272000, C455S277100, C455S277200, C455S278100, C455S307000
Reexamination Certificate
active
07899406
ABSTRACT:
Disclosed is an apparatus in a diversity system of a mobile terminal having a main receiving unit and a sub-receiving unit, which includes a sub-antenna for receiving an input signal and a part of a transmitted signal of a transmitting unit, a band-pass filter (BPF) designed to greatly attenuate a low-band frequency of the part of the transmitted signal received through the sub-antenna, a high-pass filter (HPF) for additionally attenuating the part of the transmitted signal attenuated through the BPF, a low-noise amplifier for minimizing a noise of an output value of the HPF, an HPF for passing therethrough only a high-frequency component of an output value of the low-noise amplifier, and a mixer for mixing output values of the HPF and outputting a baseband signal. One of two BPFs in the sub-receiving unit is replaced by one HPF, and thus the HPF can be fabricated on chip with the terminal receiving unit. Additionally, through the on-chip HPF, the use of an additional BPF is eliminated, and the size and the unit price of production of the mobile terminal can also be reduced.
REFERENCES:
patent: 2229044 (1941-01-01), Butler
patent: 3626294 (1971-12-01), Dancy
patent: 4017797 (1977-04-01), Laessig
patent: 5047860 (1991-09-01), Rogalski
patent: 5619531 (1997-04-01), Taylor et al.
patent: 5764693 (1998-06-01), Taylor et al.
patent: 6009129 (1999-12-01), Kenney et al.
patent: 6618453 (2003-09-01), Lundby
patent: 6711395 (2004-03-01), Tonegawa et al.
patent: 6909882 (2005-06-01), Hayashi et al.
patent: 6987953 (2006-01-01), Morris et al.
patent: 7079195 (2006-07-01), Birleson et al.
patent: 7142834 (2006-11-01), Miyagi
patent: 7184722 (2007-02-01), Johnson et al.
patent: 7194242 (2007-03-01), Tanaka et al.
patent: 7203468 (2007-04-01), Narita et al.
patent: 2002/0094788 (2002-07-01), Hayashi et al.
patent: 2002/0132597 (2002-09-01), Peterzell et al.
patent: 2002/0140869 (2002-10-01), Carr et al.
patent: 2004/0018814 (2004-01-01), Lin et al.
patent: 2004/0127182 (2004-07-01), Hayashi
patent: 2004/0137862 (2004-07-01), Tanaka et al.
patent: 2004/0179700 (2004-09-01), Neumann et al.
patent: 2004/0264601 (2004-12-01), Demir et al.
patent: 2005/0104685 (2005-05-01), Kuroki et al.
patent: 2005/0181752 (2005-08-01), Sahota
patent: 2006/0009177 (2006-01-01), Persico et al.
patent: 2006/0040627 (2006-02-01), Koike et al.
patent: 2006/0111074 (2006-05-01), Petilli et al.
patent: 2006/0111132 (2006-05-01), Choi et al.
patent: 2007/0105504 (2007-05-01), Vorenkamp et al.
patent: 2007/0218850 (2007-09-01), Pan
patent: 2008/0020721 (2008-01-01), Morris et al.
Ibata, K., Misu K., Murai K., “An m-Derived Ladder High Pass SAW Filter,” Proc. IEEE Ultrasonic Symposium, pp. 397-400, 2003.
Han Sang-Kook
Kim Seong-Joong
Son Young-Il
Anderson Matthew D
Fleming-Hall Erica
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
LandOfFree
Apparatus for suppressing cross modulation noise in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for suppressing cross modulation noise in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for suppressing cross modulation noise in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2697921