Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2011-03-22
2011-03-22
Nguyen, Duc (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S273000, C455S575700, C342S383000, C342S382000, C343S853000
Reexamination Certificate
active
07912507
ABSTRACT:
A base transceiver station (BTS) identifies the number of currently connected antenna units by receiving a signal to which 1 is added in each antenna unit via a signal line (16) connecting the antenna units (AU1to AUn) in series. The target output power of each antenna unit, which is obtained by dividing the total target output power of the antenna units by the number of currently connected antenna units, is passed to each antenna unit via a signal line (14) connecting the antenna units in series. Each antenna unit controls the gain of a variable gain amplifier so that its output power becomes equal to the target output power.
REFERENCES:
patent: 3876947 (1975-04-01), Giraudon
patent: 4228436 (1980-10-01), DuFort
patent: 4228544 (1980-10-01), Guyton
patent: 4500883 (1985-02-01), Gutleber
patent: 4872016 (1989-10-01), Kress
patent: 4876548 (1989-10-01), Lopez
patent: 4916460 (1990-04-01), Powell
patent: 4972505 (1990-11-01), Isberg
patent: 6035218 (2000-03-01), Oh et al.
patent: 6366789 (2002-04-01), Hildebrand
patent: 7006810 (2006-02-01), Winters et al.
patent: 7280848 (2007-10-01), Hoppenstein
patent: 7421288 (2008-09-01), Funakubo
patent: 7554964 (2009-06-01), Bolgiano et al.
patent: 2003/0162516 (2003-08-01), Solum
patent: 2004/0106387 (2004-06-01), Bauman et al.
patent: 2004/0146013 (2004-07-01), Song et al.
patent: 2005/0136872 (2005-06-01), Yoshizawa et al.
patent: 2008/0081588 (2008-04-01), Rofougaran
patent: 1167376 (1997-12-01), None
patent: 58-39128 (1983-03-01), None
patent: 6-164434 (1994-06-01), None
patent: 2000-307325 (2000-11-01), None
patent: 2001-285158 (2001-10-01), None
patent: 2003-152611 (2003-05-01), None
Chinese Office Action dated Sep. 25, 2009 for Chinese Application No. 200480044125.9. A partial English language translation of the Chinese Office Action is attached.
Funakubo Toshiaki
Hashigami Takahito
Chow Charles
Fujitsu Limited
Fujitsu Patent Center
Nguyen Duc
LandOfFree
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