Semiconductor integrated circuit device and wireless...

Details Semiconductor integrated circuit device and wireless... Semiconductor integrated circuit device and wireless...

2006-10-03

2006-10-03

Moe, Aung (Department: 2618)

Telecommunications

Transmitter

Frequency conversion

C455S073000, C455S127300, C330S254000, C375S297000

Reexamination Certificate

active

07116949

ABSTRACT:
The dynamic range is changed by switching a current applied to an amplifying circuit to obtain the minimum ICP required to keep linearity with the number of multiplexes even when the number of multiplexes of data is changed by switching the operation current of the amplifying circuits of the transmission system and also supplying the information about number of multiplexes of data to be transmitted to the amplifying circuits of the transmission system from the baseband circuit. Thereby, the signal can be transmitted without distortion even when the number of multiplexes increases and the current of the amplifying circuit may be reduced when the number of multiplexes is small in order to reduce the current consumption in the communication semiconductor integrated circuit device which can form a wireless communication system of the code division multiplex system such as W-CDMA system.

REFERENCES:
patent: 6127890 (2000-10-01), Shimomura et al.
patent: 6215987 (2001-04-01), Fujita
patent: 6650691 (2003-11-01), Cramer, III
patent: 6675000 (2004-01-01), Ichikawa
patent: 2004/0071225 (2004-04-01), Suzuki et al.
patent: 1-011207 (2000-06-01), None
patent: 9-270733 (1997-10-01), None
patent: 2000-216726 (2000-08-01), None
patent: 00/55968 (2000-09-01), None

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