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Semiconductor integrated circuit device and wireless communication system

  • US 7,116,949 B2
  • Filed: 10/16/2003
  • Issued: 10/03/2006
  • Est. Priority Date: 11/08/2002
  • Status: Expired due to Fees
First Claim
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1. A semiconductor integrated circuit device comprising:

  • a modulation circuit for modulating multiplexed signals to be transmitted; and

    a variable gain amplifying circuit for amplifying the modulated transmitting signals depending on first control information to indicate an output level,wherein said variable gain amplifying circuit is capable of changing the operation current depending on second control information indicating the number of multiplexes of the multiplexed signals to be transmitted and is controlled to increase said operation current when the number of multiplexes is large or to decrease said operation current when the number of multiplexes is small.

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