Feedforward amplifier
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 5, 2004
Grant Date -
Jan 29, 2004
app pub date -
Jun 4, 2003
filing date -
Jul 29, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The object of this invention is to provide a feedforward amplifier that performs precise distortion compensation on a plurality of signal groups without adopting broadband frequency-band characteristics for the auxiliary amplifier. This is achieved by inputting a plurality of signal groups, each having a different frequency bandwidth respectively. In a distortion detection loop, a main amplifier 4 is used to amplify this plurality of input signal groups and detect the distortion arising in said main amplifier 4. In a distortion compensation loop the distortion detected in the distortion detection loop is removed from the amplified signal from said main amplifier 4. At this time, the distortion compensation loop has the same number of distortion amplification systems as the number of input signal groups that use the auxiliary amplifiers 12 and 16 to amplify distortion in each input signal group that contains distortion detected by the distortion detection loop, and that removes the sum total of the distortion of each input signal group amplified by this plurality of distortion amplification systems from the amplified signal from the main amplifier 4.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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