Patent US7145387B2 successfully refreshed from Google Patents.
US7145387B2
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US
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Composite power amplifier
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 2002-12-13
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Granted: 2006-12-05
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Expires: 2022-12-13
Abstract
Abstract A composite power amplifier includes a first and a second power amplifier connected to an input signal over an input network and to a load over an output network. The output network includes phase shifting elements for generating different phase shifts from each power amplifier output to the common load. The input network includes means for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a transition point (T.P) and decreases motonically with increasing output signal amplitude above said point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above the transition point.
Inventors
- 👤 Richard L. B. Hellberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:40
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/24; H03F1/00; H03F1/02; H03F1/0205; H03F1/0288; H03F1/0294; H03F1/32; H03F2200/00; H03F2200/423; H03F2200/451
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
98 words
A composite power amplifier including a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network; and circuitry in said input network for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 2
Dependent Claim
98 words
A composite power amplifier including a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network; and circuitry in said input network for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 3
Dependent Claim
28 words
The amplifier of claim 1 , including phase shifting elements in said output network for generating different phase shifts from each power amplifier output to said common load.
Claim 4
Dependent Claim
35 words
The amplifier of claim 1 , including circuitry for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below said predetermined, transition point.
Claim 5
Dependent Claim
15 words
The amplifier of claim 1 , including amplifiers and phase shifters for maximizing output power.
Claim 6
Dependent Claim
13 words
The amplifier of claim 1 , including circuitry for maximizing power amplifier efficiency.
Claim 7
Dependent Claim
16 words
The amplifier of claim 1 , including a filter for canceling nonlinearity in the output signal.
Claim 8
Independent Claim
101 words
A method of driving a composite power amplifier including a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network, said method including the step of driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 9
Independent Claim
101 words
A method of driving a composite power amplifier including a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network, said method including the step of driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 10
Dependent Claim
23 words
The method of claim 7 , including the step of generating different phase shifts from each power amplifier output to said common load.
Claim 11
Dependent Claim
36 words
The method of claim 7 , including the step of driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below said predetermined transition point.
Claim 12
Dependent Claim
24 words
The method of claim 7 , including the steps of amplifying and phase shifting drive signals to said power amplifiers for maximizing output power.
Claim 13
Dependent Claim
22 words
The method of claim 7 , including the step of adjusting drive signals to said power amplifiers for maximizing power amplifier efficiency.
Claim 14
Dependent Claim
24 words
The method of claim 7 , including the step of filtering drive signals to said power amplifiers for canceling nonlinearity in the output signal.
Claim 15
Dependent Claim
52 words
The method of claim 7 , including the steps of independently amplifying and phase shifting drive signals to said power amplifiers for maximizing output power; adjusting drive signals to said power amplifiers for maximizing power amplifier efficiency; and filtering drive signals to said power amplifiers for canceling nonlinearity in the output signal.
Claim 16
Dependent Claim
103 words
A radio terminal including a composite power amplifier, which includes a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network; and circuitry in said input network for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 17
Dependent Claim
103 words
A radio terminal including a composite power amplifier, which includes a first and a second power amplifier connected to an input signal over an input network and to a common load over an output network; and circuitry in said input network for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below a predetermined transition point and decreases monotonically with increasing output signal amplitude above said transition point, and second output current components having an amplitude that increases linearly with increasing output signal amplitude both below and above said transition point.
Claim 18
Dependent Claim
28 words
The terminal of claim 14 , including phase shifting elements in said output network for generating different phase shifts from each power amplifier output to said common load.
Claim 19
Dependent Claim
35 words
The terminal of claim 14 , including means for driving both power amplifiers to produce first output current components having an amplitude that increases linearly with increasing output signal amplitude below said predetermined transition point.
Claim 20
Dependent Claim
15 words
The terminal of claim 14 , including amplifiers and phase shifters for maximizing output power.
Claim 21
Dependent Claim
13 words
The terminal of claim 14 , including means for maximizing power amplifier efficiency.
Claim 22
Dependent Claim
16 words
The terminal of claim 14 , including a filter for canceling nonlinearity in the output signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2009-12-04 | 2010-06-05 | 2010-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2013-12-04 | 2014-06-05 | 2014-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2017-12-04 | 2018-06-05 | 2018-12-05 | $7700.00 | Window Closed / Lapsed |