RF power amplifier linearization
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 17, 1993
Grant Date -
N/A
app pub date -
Jun 5, 1992
filing date -
Jun 5, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus for generating an amplified signal from an input signal. The apparatus comprises: (a) a phase-shifting circuit for shifting the phase of a feedback signal derived from the amplified output signal in response to a control signal; (b) a differencing circuit for generating an output signal based on the input signal and the phase-shifted feedback signal; (c) a filter for filtering the output signal; and (d) a power amplifier for amplifying the filtered output signal to obtain the amplified output signal. The apparatus further comprises a CPU and DAC for generating a control signal corresponding to a control signal value associated with a frequency range including the operating frequency from a table associating predetermined control signal values with frequency ranges in the portion of the frequency spectrum in which the amplifier is designed to operate. Phase shift introduced by the filter is thus compensated for by the phase-shifting circuit to maintain negative feedback and thus system stability.
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