Power amplifier having a bias current control circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 12, 2004
Grant Date -
Jan 1, 2004
app pub date -
Mar 14, 2003
filing date -
Jun 29, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power amplifier for use in a mobile handset includes an amplifying transistor for generating an output of the mobile handset, a bias circuit having a bias transistor and providing a bias current to bias the amplifying transistor, and a bias current control circuit, responsive to a control signal, for adjusting the bias current to control an operation current of the amplifying transistor. The control signal is generated by the mobile handset, and the control signal is determined by a power level of the output of the mobile handset.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully